EXHIBIT 4



           NEITHER THIS DEBENTURE NOR THE UNDERLYING SHARES OF COMMON STOCK
          HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED
          NOR UNDER ANY STATE SECURITIES LAW, AND MAY NOT BE SOLD, PLEDGED,
            ASSIGNED OR TRANSFERRED UNTIL (i) A REGISTRATION STATEMENT IS
          EFFECTIVE UNDER SAID ACT AND ANY APPLICABLE STATE SECURITIES LAW
           OR (ii) THE COMPANY RECEIVES AN OPINION OF ITS COUNSEL THAT THE
          DEBENTURE OR THE UNDERLYING SHARES MAY BE SOLD, PLEDGED, ASSIGNED
             OR OTHERWISE TRANSFERRED WITHOUT REGISTRATION PURSUANT TO AN
          APPLICABLE EXEMPTION UNDER SAID ACT.

                             AMERICAN ELECTROMEDICS CORP.
                                   
                    Form of 14% Convertible Subordinated Debenture,
                                 Due October 31, 1999


          No.                                              __________, 1996
          $

               AMERICAN ELECTROMEDICS CORP., a Delaware corporation (the
          "Company"), for value received, hereby promises to pay to the
          order of                        (the "Holder"), in lawful moneys
          of the United States of America, the principal sum of
          ________________________ Dollars, on October 31, 1999, with
          interest on the unpaid balance thereof at the rate of fourteen
          percent (14%) per annum from the date hereof until the entire
          outstanding principal amount hereof shall be paid, payable,
          quarterly, on the first days of February, May, August and
          November in each year, beginning on February 1, 1997.  Principal
          and interest shall be paid at the office of the Company at 13
          Columbia Drive, Suite 18, Amherst, New Hampshire, or at such
          other location as the Company and the Holder may agree upon in
          writing.

               This Debenture is one of a series of duly authorized issue
          of debentures of the Company designated as its 14% Convertible
          Subordinated Debentures, due October 31, 1999 (hereinafter
          referred to as the "Debentures"), all of like tenor except as to
          principal amount, in an aggregate initial principal amount of up
          to $720,000, issued under and pursuant to a Unit Purchase
          Agreement (hereinafter referred to as the "Purchase Agreement"),
          among the Company, the Holder and the holders of the other
          Debentures pursuant to which the Company is selling the
          Debentures and shares of its Common Stock, $.10 par value (the
          "Common Stock").  This Debenture is issued upon the following
          terms, to which the Holder assents and the Company, for itself
          and it successors, agrees as follows:
               
               1.   Ranking.  
                    -------
                    All Debentures shall rank equally and ratably without
          priority over one another.

               2.   Senior Priority.  2.01  Senior Indebtedness.  
                    ---------------          -------------------
                    The Company hereby covenants and agrees that the
          indebtedness evidenced by this Debenture shall be senior in right
          of payment, to the extent and in the manner hereinafter provided,
          to all indebtedness of the Company to present and future
          creditors, but shall be subordinate and junior in right of
          payment to the prior payment of the principal of, interest on and
          costs, expenses and charges with respect to all existing or
          future obligations of the Company for money borrowed from
          Citizens Bank New Hampshire, or any substitute bank or other
          financial institution, in an amount not to exceed $1,500,000 (the
          "Senior Indebtedness"):

               (a)  In the event of any insolvency or bankruptcy
          proceeding, and any receivership, liquidation, reorganization or
          other similar proceeding in connection therewith, with respect to
          the Company, its creditors, as such, or its property, or in the
          event of any proceeding for voluntary liquidation, dissolution or
          other winding up of the Company, whether or not involving
          insolvency or bankruptcy, the holders of Senior Indebtedness
          shall be entitled to receive payment in full of all principal of,
          and premium, if any, and interest on, all Senior Indebtedness
          before the Holder is entitled to receive any payment on account
          of principal of, and premium, if any, or interest on, this
          Debenture, and to that end (but subject to the power of a court
          of competent jurisdiction to make other equitable provisions
          reflecting the rights conferred in this Debenture upon the Senior
          Indebtedness and the holders thereof with respect to the
          subordinate indebtedness represented by the Debentures and the
          holders thereof by a lawful plan of reorganization under
          applicable bankruptcy law) the holders of Senior Indebtedness
          shall be entitled to receive for application in payment on all
          principal of, and premium, if any, and interest on, all Senior
          Indebtedness any payment or distribution of any kind or
          character, whether in cash or property or securities, which may
          be payable or deliverable in any such proceeding in respect of
          this Debenture, except securities which are subordinate and
          junior in right of payment to the payment of all Senior
          Indebtedness then outstanding, and the Holder irrevocably
          authorizes, empowers and directs the Company and any receiver,
          trustee or other person to effect any such payment or
          distribution.  The Holder irrevocably authorizes and empowers
          (without imposing any obligation on) each holder of Senior
          Indebtedness to demand, sue for, collect and receive the Holder's
          share of all such payments and distributions, to file and prove
          all claims therefor and to take all such other action, in the
          name of the Holder or otherwise, as such holder of Senior
          Indebtedness may determine to be necessary or appropriate for the
          enforcement of the provisions of this Subsection 2.01(a).  The
          Holder will execute and deliver to each holder of Senior
          Indebtedness all such further instruments confirming such
          authorization, such powers of attorney, proofs of claim,
          assignments of claim and other instruments, and shall take all
          such other action, as may be requested by such holder in order to
          enable such holder to enforce all claims upon or in respect of
          such Holder's share of all such payments and distributions.

               (b)  In the event that this Debenture is declared payable
          before its expressed maturity because of the occurrence of an
          Event of Default (under circumstances when the provisions of
          Subsection 2.01(a) hereof shall not be applicable), the holders
          of the Senior Indebtedness outstanding at the time this Debenture
          so becomes payable shall be entitled to receive payment in full
          of all principal of, and premium, if any, and interest on, all
          Senior Indebtedness before the Holder is entitled to receive any
          payment on account of the principal of and interest on this
          Debenture or to take any action to collect the same.  Until an
          Event of Default has occurred under this Debenture the Company
          may pay any principal and interest when and as payable according
          to the terms hereunder.

               2.02  Subordination.  
                     --------------
                    No present or future holder of Senior Indebtedness
          shall be prejudiced in its right to enforce subordination of this
          Debenture by any act or failure to act on the part of the
          Company.  The provisions of Section 2.01 hereof and this Section
          2.02 with respect to subordination are solely for the purpose of
          defining the relative rights of the holders of Senior
          Indebtedness, on the one hand, and the Holder, on the other hand,
          and nothing herein shall impair, as between the Company and the
          Holder, the obligation of the Company, which is unconditional and
          absolute, to pay to the Holder the principal of and interest on
          this Debenture in accordance with its terms, nor shall anything
          herein prevent the Holder from exercising all remedies otherwise
          permitted by applicable law or hereunder upon the occurrence of
          any Event of Default, subject to the rights, if any, under these
          provisions, of holders of Senior Indebtedness to receive cash,
          property or securities otherwise payable or deliverable to the
          Holder.

               2.03  Subrogation.
                     -----------
                    In the event cash, securities or other property
          otherwise payable or deliverable to the Holder shall have been
          applied pursuant to Section 2.01 hereof to the discharge of
          Senior Indebtedness, then, and in such event, the Holder (i)
          shall be entitled to receive from the holders of Senior
          Indebtedness then outstanding any payments or distributions
          received by such holders of Senior Indebtedness in excess of the
          amount sufficient to discharge all Senior Indebtedness, and (ii)
          shall be subrogated to any rights of any holders of Senior
          Indebtedness to receive any further payments or distributions
          then applicable to Senior Indebtedness until this Debenture shall
          have been paid in full.  No such payments or distributions
          received by the Holder, by reason of such subrogation, of cash,
          securities or other property which otherwise would be paid or
          distributed to the holders of Senior Indebtedness shall, as
          between the Company and its creditors other than the holders of
          Senior Indebtedness, on the one hand, and the Holder, on the
          other hand, be deemed to be a payment by the Company on account
          of the Debenture.

               2.04  Other Indebtedness.
                     -------------------
                    Nothing herein shall be construed to restrict or limit
          the ability of the Company to incur indebtedness which shall be
          (i) subordinate in right of payment to the indebtedness evidenced
          by this Debenture and the other Debentures, (ii) Senior
          Indebtedness as defined in Subsection 2.01(a) hereof or (iii)
          secured by assets of the Company or any of its subsidiaries and
          which assets were acquired as a result of or in connection with
          such indebtedness and have a collateral value equal to at least
          fifty (50%) percent of the outstanding principal amount thereof.

               3.   Redemption by the Company.  3.01  Optional Right of
                    -------------------------         -----------------
          Redemption.  At any time after October 31, 1997 and upon notice to
          -----------
          the Holder as provided in Section 3.03 hereof, the Company, at
          its option, may redeem the Debentures as a whole, or from time to
          time in part, at a redemption price equal to one hundred (100%)
          percent of the principal amount thereof, plus accrued interest to
          the redemption date.  Notwithstanding the foregoing, any such
          redemption shall be subject to the right of the Holder to convert
          this Debenture or any portion hereof into shares of Common Stock
          of the Company pursuant to Section 6 hereof.

               3.02  Allocation.
                    -----------
                    If the Company shall elect to redeem less than all of
          the Debentures outstanding at any time pursuant to Section 3.01
          hereof, the Company will allocate the principal amount to be
          redeemed among the Holders in proportion, as nearly as may be
          practicable, to the respective principal amounts of the
          Debentures outstanding.

               3.03  Notice and Place of Redemption.
                    --------------------------------
                     Notice of redemption shall be mailed to the Holders,
          not less than twenty (20) days nor more than thirty (30) days
          prior to the date fixed for redemption (the "Redemption Date"),
          to their respective last addresses as they shall appear upon the
          books of the Company.  The place for redemption shall be the then
          principal office of the Company.  If less than all of the
          outstanding Debentures are to be redeemed, the notice shall set
          forth the principal amount of the Debentures to be redeemed from
          each holder.

               3.04  Redemption at Option of Holder.
                    --------------------------------
                      In the event of (i) a Change in Control (as defined
          below) of the Company or (ii) the election by the Company to
          permit redemption at the                request of the Holder
          pursuant to Subsection 6.05(c) hereof, the Holder shall have the
          option to require the Company to redeem this Debenture, in whole
          or in part, upon written request to the Company given within
          thirty (30) days after notice of the occurrence of an event
          specified in (i) or (ii) is first mailed to such Holder by the
          Company at the address of the Holder as it shall appear on the
          books of the Company.  The Debenture or portion hereof so to be
          redeemed shall be redeemed at the principal office of the Company
          twenty (20) days after receipt of notice by the Holder of the
          election to redeem.

               A "Change in Control" shall be deemed to have occurred if:
                    (a) any "person" or "group" (as such terms are defined
               in Sections 13(d) and 14(d) of the Securities Exchange Act
               of 1934, as amended (the "Exchange Act")), other than (i) a
               trustee or other fiduciary holding securities under an
               employee benefit plan of the Company, (ii) a person or group
               by reason of a transaction with the Company approved by the
               Company's Board of Directors as constituted in accordance
               with clause (b) below, or (iii) a corporation owned,
               directly or indirectly, by the stockholders of the Company
               in substantially the same proportions, becomes the
               "beneficial owner" (as defined in Rule 13d-3 under the
               Exchange Act), directly or indirectly, of securities of the
               Company representing twenty (20%) percent or more or the
               combined voting power of the Company's then outstanding
               securities; or

                    (b)  individuals elected as members of the Board of
               Directors at the Annual Meeting of Stockholders of the
               Company held on October 8, 1996, or successors chosen by
               such individuals, shall cease for any reason to constitute a
               majority of the whole Board of Directors. 

               3.05  Notation of Redemption.
                     -----------------------
                     If this Debenture shall be redeemed in part, the
          Holder shall surrender this Debenture, at the office of the
          Company, on the date fixed for redemption and the Company shall,
          at its option and without charge to the Holder, either (i)
          execute and deliver to the Holder a Debenture (having the same
          form and having the same terms as this Debenture) for the
          unredeemed part of the original principal amount of this
          Debenture or (ii) make note on this Debenture of the part of the
          original principal amount of this Debenture so called for
          redemption and redeemed.  In such latter case, from and after
          such redemption, for the purposes of this Debenture, the original
          principal amount of this Debenture shall be deemed to be reduced
          by the part of the original principal amount of this Debenture so
          called for redemption and redeemed.

               4.   Registration of Debentures.  4.01  Registry Book and
                    --------------------------         -----------------
          Right of Inspection.
          --------------------
                    The Company shall permit any Holder, or his duly
          authorized attorney, upon written request received by the Company
          at least two (2) business days prior to the requested inspection
          date, during ordinary business hours, to inspect and copy or make
          extracts from its books showing the registered holders of the
          Debentures.  Such books shall be maintained at the then principal
          office of the Company.

               4.02  Transfer.
                    ----------
                     This Debenture is transferable only upon the books of
          the Company which it shall cause to be maintained for the
          purpose, and the Company may treat the registered holder of this
          Debenture as appears on such books at any time as the Holder for
          all purposes.  In order to transfer this Debenture, the Holder,
          or his duly authorized attorney, shall surrender this Debenture
          at the then principal office of the Company, with the Assignment
          form at the end hereof (or accompanied by an assignment, in form
          reasonably satisfactory to the Company) duly executed. Upon such
          surrender, the Company, at its expense, shall execute and deliver
          to or on the order of the person to whom this Debenture has been
          assigned a Debenture for the same principal amount of this
          Debenture, or such lesser amount as provided for in the
          Assignment.

               4.03  Exchange of Debentures.
                    ------------------------
                     In order to exchange this Debenture, the Holder, or
          his duly authorized attorney, shall surrender this Debenture for
          exchange at the then principal office of the Company.  Upon such
          surrender, the Holder, without expense, shall be entitled to
          receive in exchange Debentures, each in the principal amount of
          $1,000 or a multiple thereof (except that, if this Debenture
          shall not be in the principal amount of $1,000 or a multiple
          thereof, one of the Debentures received in exchange thereof need
          not be in the principal amount of $1,000 or a multiple thereof),
          payable to the Holder for the same aggregate principal amount as
          the then unpaid principal amount of this Debenture.  All
          Debentures issued pursuant to this Section 4.03 and Sections
          3.04, 4.02, 4.03 and 6.04 hereof shall be dated the date of this
          Debenture and shall in all other respects be in the same form and
          have the same terms as this Debenture.

               4.04  Loss, etc., of Debenture.
                    --------------------------
                     Upon receipt of evidence satisfactory to the Company
          of the loss, theft, destruction or mutilation of this Debenture,
          and of indemnity bond or agreement satisfactory to the Company,
          if lost, stolen or destroyed, and upon surrender and cancellation
          of this Debenture, if mutilated, and upon reimbursement of the
          Company's reasonable incidental expenses, the Company shall
          execute and deliver to the Holder a new Debenture of like tenor
          and denomination.

               4.05  Debenture Holder Not Stockholder.
                     ---------------------------------
                     This Debenture does not confer upon the Holder any
          right to vote or to consent or to receive notice as a stockholder
          of the Company, as such, in respect of any matters whatsoever, or
          any other rights or liabilities as a stockholder, prior to the
          conversion hereof.

               5.  Covenants.
                    ---------
                    The Company agrees that until such time as this
          Debenture is paid in full, the Company shall comply with the
          following covenants:

               5.01 Payment of Principal and Interest.  
                    ---------------------------------
                    Duly and punctually pay the principal of and interest
          on this Debentures and the other Debentures in accordance with
          the terms hereof and thereof.

               5.02 Corporate Existence.  
                    --------------------
                    Do all things necessary to preserve and keep in full
          force and effect its corporate existence, franchises and rights;
          provided, however, that nothing in this Section 5.02 shall
          prevent a consolidation, merger, sale or transfer permitted by
          Section 5.07 hereof;

               5.03 Payment of Taxes and Other Claims.  
                    ----------------------------------
                    Pay and discharge, all sums which become payable by it
          as taxes, assessments and governmental charges, for services and
          materials and for any other reason prior to the date on which
          penalties attach thereto; provided, however, that the Company
          shall have the right, in good faith, to contest its obligation to
          pay any such sum, and, pending such contest, to delay or refuse
          payment, if it sets aside on its books an adequate reserve to
          cover any such sum so contested.

               5.04 Compliance With Law.
                    --------------------
                    Comply with all applicable laws, rules, regulations and
          requirements of all governmental authorities, noncompliance with
          which could materially adversely effect its business or
          condition, financial or otherwise.

               5.05 Maintenance of Properties.
                    -------------------------
                    Maintain its properties necessary or useful for the
          proper conduct of its business in good working order and
          condition, ordinary wear and tear excepted.

               5.06 Insurance.
                    ----------
                    Maintain, with insurance companies of recognized
          standing, insurance against such risks and in such amounts as are
          customarily insured by persons engaged in similar businesses and
          owning similar properties in the same general area in which the
          Company operates.

               5.07 Consolidation, Merger and Sale.
                    -------------------------------
                    Shall not consolidate with or merge into any other
          corporation or convey or transfer its properties and assets
          substantially as an entirety to any person, unless:

                    (a)  the corporation formed by such consolidation into
          which the Company is merged or the person which acquires by
          conveyance or transfer the properties and assets of the Company
          substantially as an entirety shall be a corporation organized and
          existing under the laws of the United States of America or any
          state or the District of Columbia, and shall expressly assume the
          due and punctual payment of the principal of and interest on this
          Debenture and the other Debentures and the performance of every
          covenant of the Purchase Agreement on the part of the Company to
          be performed or observed; and

                    (b)  immediately after giving effect to such
          transaction, no Event of Default (as defined in Section 8), and
          no event which, after notice or lapse of time, or both, would
          become an Event of Default, shall have happened and be
          continuing; provided that the foregoing shall not affect the
          right, if any, of the Holder under Section 3.04 hereof.

               5.08 1934 Act Reports.
                    ----------------
                    File all reports and any definitive proxy or
          information statements required to be filed by the Company with
          the Securities and Exchange Commission (the "SEC") pursuant to
          Section 13(a), 13(c), 14 or 15(d) of the Exchange Act.

               5.09 Financial Statements and Information.  
                    ------------------------------------
                    Mail or deliver to the Holder:

                    (a)  within fifty (50) days after the close of each of
          the three interim quarterly accounting periods of the Company, a
          copy of its Form 10-QSB (or Form 10-Q, if applicable) for such
          fiscal quarter;

                    (b)  within one-hundred (100) days after the close of
          each fiscal year of the Company, a copy of its Form 10-KSB (or
          Form 10-K, if applicable) for such fiscal year; and

                    (c)  copies of all such other financial statements,
          reports and proxy statements as the Company shall file with the
          SEC or shall send to or make available to its stockholders.


               5.10 Maintenance of Interest Coverage Ratios.
                    ----------------------------------------
                    Maintain the interest coverage ratios in effect from
          time to time in the agreements with holders of Senior
          Indebtedness.


               5.11 Access to Books and Records.
                    ---------------------------
                    Upon the occurrence of an Event of Default specified in
          Section 8 hereof, permit the Holders of an aggregate of at least
          $400,000 principal amount then outstanding of Debentures access
          to the books and records of the Company at reasonable times and
          upon request of such Holders.


               5.12 Use of Proceeds.
                    ----------------
                    Use the proceeds from the sale of the Units for (i)
          acquisitions, (ii) significant investments in other companies,
          (iii) purchasing and licensing of technology and/or (iv) general
          working capital purposes.


               5.13 Distribution.
                    ------------
                    Shall not declare or pay any dividends or purchase,
          redeem, retire or otherwise acquire for value any of its capital
          stock (or rights, options or warrants to purchase such shares)
          now or hereafter outstanding, return any capital to its
          stockholders as such, or make any distribution of assets to its
          stockholders as such, or permit any subsidiary of the Company to
          do any of the foregoing, except that the subsidiaries may declare
          and make payment of cash and stock dividends, return capital and
          make distribution of assets to the Company and except that
          nothing herein contained shall prevent the Company from:

                    (i)  effecting a stock split or declaring or paying any
          dividend consisting of shares of any class of capital stock to
          the holders of shares of such class of capital stock; or 

                    (ii) purchasing, redeeming, retiring or otherwise
          acquiring for value any of its capital stock (or rights, options
          or warrants to purchase such shares) in an amount not exceeding
          an aggregate of $50,000 in any twelve month period.


               5.14 Dealings with Affiliates.
                    -------------------------
                    Shall not enter into any transaction with any officer
          or director of the Company or any subsidiary or holder of more
          than five (5%) percent of the outstanding shares of any class of
          capital stock of the Company, or any member of their respective
          immediate families or any corporation or other entity directly or
          indirectly controlled by one or more such officers, directors or
          stockholders or members of their immediate families, unless the
          interest of such person is disclosed in advance to the Board of
          Directors, such transaction is on arm's-length terms which are no
          less favorable to the Company or any subsidiary as those which
          could have been obtained from an unaffiliated third party, and
          such transaction is approved by a disinterested majority of the
          Board of Directors of the Company or such subsidiary.

               6.   Conversion of the Debentures.  6.01  Right of
                    ----------------------------         --------
          Conversion.
          -----------
                    Subject to and upon compliance with the provisions of
          this Section 6, at the option of the Holder, (i) at such time as
          this Debenture shall be called for redemption pursuant to Section
          3.01 hereof, and in lieu of such redemption, (ii) at such time
          that a registration statement (the "Registration Statement")
          filed by the Company which includes shares of Common Stock
          beneficially owned, directly or indirectly, by the Holder has
          been declared effective by the SEC under the Securities Act or
          (iii) upon the stated maturity of the Debenture, and in lieu of
          payment of principal upon maturity, all or any portion of the
          unpaid principal amount of this Debenture may be converted into
          fully paid and non-assessable shares of Common Stock, at the
          conversion price, determined as hereinafter provided, in effect
          at the time of conversion.  Unpaid accrued interest on the
          principal amount of this Debenture being converted shall not be
          convertible into shares of Common Stock of the Company, and the
          first $1,000 of any such unpaid accrued interest shall be deemed
          waived by the Holder at the time of conversion, and the amount
          remaining, if any, of unpaid accrued interest of the principal
          amount being converted shall be paid in cash by the Company
          within ten (10) days after its receipt of the Conversion Form.

               6.02  Initial Conversion Price.
                    --------------------------
                    The price at which Common Stock shall be delivered upon
          conversion (herein referred to as the "Conversion Price") shall
          be initially Seventy-Five cents ($0.75) per share.  The shares of
          Common Stock issuable upon the conversion of this Debenture shall
          be referred to as the "Conversion Shares".  Upon any adjustment
          of the Conversion Price as hereinafter provided, the number of
          Conversion Shares shall equal the unpaid principal amount of this
          Debenture presented for conversion divided by the Conversion
          Price resulting from such adjustment.

               6.03  Surrender for Conversion.
                    -------------------------
                    In order to exercise the conversion right referred to
          in Section 6.01 hereof, the Holder shall surrender this Debenture
          to the Company at its then principal office, with the Conversion
          Form at the end hereof duly executed (a) within ten (10) days
          after receipt of notice of such redemption, in the case of a
          conversion pursuant to clause (i) of Section 6.01 hereof, (b) at
          any time after receipt of notice  that the Registration Statement
          mentioned in clause (ii) of Section 6.01 hereof is to become
          effective, or (c) at least ten (10) days prior to the stated
          maturity of this Debenture, in the case of a conversion pursuant
          to clause (iii) of Section 6.01 hereof.   As promptly as shall be
          practicable, but not more than twenty (20) days after such
          surrender, the Company shall issue and deliver to the Holder, on
          his written order, a certificate or certificates for the number
          of whole shares of Common Stock issuable upon such conversion. 
          To the extent permitted by law, such conversion shall be deemed
          to have been effected and the Conversion Price shall be
          determined immediately prior to the close of business on the date
          of such surrender, and at such time the rights of the Holder of
          this Debenture (or, if only a part hereof shall be converted, of
          such part) shall cease, and the person or persons in whose name
          or names any certificate or certificates for Common Stock shall
          be issuable upon such conversion shall be deemed to have become
          the holder or holders or record of the shares represented
          thereby.

               6.04  No Fractional Shares; Partial Conversion.
                    ------------------------------------------
                    No fractional shares shall be issuable upon conversion
          of this Debenture.  Instead of any fractional Common Shares which
          would otherwise be issuable upon the conversion of this Debenture
          or a specified portion hereof, the number of shares of Common
          Stock issuable upon such conversion shall be rounded up or down
          to the nearest whole share.  In case this Debenture is converted
          in part only, upon such conversion the Company shall execute and
          deliver to the Holder, at the expense of the Company, a new
          Debenture, dated the date of this Debenture, in the principal
          amount equal to the unconverted portion of this Debenture in
          accordance with Section 4.04 hereof.

               6.05  Adjustment of Conversion Price; Special Provisions on
                     -----------------------------------------------------
          Adjustment of Conversion Price.
          -------------------------------
                    The above provisions of this Section 6 are subject to
          the following provisions:

               (a)  If the Company at any time shall consolidate with or
          merge into or sell or convey all or substantially all of its
          assets to any other corporation, this Debenture shall thereafter
          be convertible into such number and kind of securities and
          property as would have been issuable or distributable on account
          of such consolidation, merger, sale or conveyance upon or with
          respect to the securities into which this Debenture would have
          been convertible immediately prior to such consolidation, merger,
          sale or conveyance.  The foregoing provision shall similarly
          apply to successive transactions of a similar nature by any such
          successor or purchaser.  Without limiting the generality of the
          foregoing, the anti-dilution provisions of this Debenture shall
          apply to such securities of such successor or purchaser after any
          such consolidation, merger, sale or conveyance.

               (b)  If the Company at any time shall, by subdivision,
          combination or reclassification of securities or otherwise,
          change any of the securities into which this Debenture is
          convertible into the same or a different number of securities of
          any class or classes, this Debenture shall thereafter be
          convertible into such number and kind of securities as would have
          been issuable as the result of such change with respect to the
          securities into which this Debenture would have been convertible
          immediately prior to such subdivision, combination,
          reclassification or other change.  If shares of Common Stock are
          subdivided or combined into a greater or smaller number of shares
          of Common Stock, the Conversion Price shall be proportionately
          reduced in case of subdivision of shares or proportionately
          increased in the case of combination of shares, in both cases by
          the ratio which the total number of shares of Common Stock
          outstanding immediately prior to such event bears to the total
          number of shares of Common Stock to be outstanding immediately
          after such event.  If the Company at any time shall declare a
          dividend or make a distribution on the outstanding shares of its
          Common Stock, in shares of its Common Stock, the Conversion Price
          in effect at the time of the record date for such dividend or
          distribution shall be proportionately reduced by the ratio which
          the total number of shares of Common Stock outstanding
          immediately prior to such event bears to the total number of
          shares of Common Stock to be outstanding immediately after such
          event.

               (c)  Subject to the last sentence of this Subsection
          6.05(c), if the Company shall at any time sell any Common Stock
          (including upon the exercise of options [other than options
          granted under a stock option plan of the Company], warrants or
          other rights or upon the conversion of any instrument granted or
          issued after August 31, 1996) for (A) a per share consideration
          which is less than the Conversion Price in effect at the close of
          business on the business day next preceding the day of such sale
          and (B) more than eighty (80%) percent of the total consideration
          shall consist of cash, then, at the option of the Company, either
          (i) the Holder shall have the right to require the Company to
          redeem this Debenture or any portion hereof or (ii)
          notwithstanding Subsection 6.05(d), the Conversion Price in
          effect at the close of business on such next preceding business
          day shall be decreased to equal the per share consideration
          received by the Company in connection with such sale of the
          Common Stock.  In the event that the Company elects to permit the
          redemption specified in clause (i) above, it shall promptly
          prepare and mail a notice to the Holder at the address of the
          Holder as it shall appear on the books of the Company. 
          Notwithstanding anything in this Subsection 6.05(c) to the
          contrary, the provisions of this Subsection 6.05(c) shall not
          apply in connection with the issuance (the "Capital Issuance") by
          the Company of shares of Common Stock for proceeds of up to
          $300,000 required to meet the minimum capital requirements for
          listing on NASDAQ; provided, however, that should the Company
          desire to effect a Capital Issuance, it shall give the Holder the
          right to participate therein in an amount equal to the dollar
          amount of the Capital Issuance multiplied by a fraction, the
          numerator of which shall be the principal amount of this
          Debenture and the denominator of which shall be the aggregate
          principal amount of all Debentures then outstanding.  The Company
          shall give the Holder written notice of a proposed Capital
          Issuance and the amount which the Holder may purchase, and the
          Holder shall have ten (10) days from the date the Company sends
          the notice to accept the offer to participate.  The failure of
          the Holder to respond timely to any offer to participate in a
          Capital Issuance shall be deemed a rejection of such offer.

               (d)  No adjustment of the Conversion Price pursuant to this
          Section 6.05 shall be made if the amount of such adjustment would
          be less than $.05, but in such case any adjustment that would
          otherwise be required then to be made shall be carried forward
          and shall be made at the time of and together with the next
          subsequent adjustment, which, together with any adjustment or
          adjustments so carried forward, shall amount to not less than
          $.05.

               (e)  Whenever the Conversion Price is adjusted as provided
          in this Section 6.05:

                    (i)  The Company shall compute the adjusted Conversion
               Price in accordance with this Section 6.05 and shall prepare
               a certificate signed by the Treasurer of the Company setting
               forth the adjusted Conversion Price and showing in
               reasonable detail the facts upon which such adjustment is
               based; and

                    (ii)  As promptly as practicable, the Company shall
               cause a copy of the certificate referred to in the foregoing
               clause (i) to be mailed to the Holder at the address of the
               Holder as it shall appear on the books of the Company.

               (f)  In case (i) the Company shall declare a dividend or any
          other distribution on its Common Stock payable otherwise than in
          cash out of its earned surplus or (ii) of any reclassification or
          reorganization of the Common Stock of the Company other than a
          subdivision or combination of the outstanding Common Stock, or of
          any consolidation or merger to which the Company is a party and
          for which approval of stockholders of the Company is required or
          of the sale or transfer of all or substantially all of the assets
          of the Company or (iii) of the voluntary or involuntary
          dissolution, liquidation or winding upon of the Company, the
          Company shall cause to be mailed to the Holder, at least ten (10)
          days prior to the applicable record date hereinafter specified, a
          notice stating (A) the date on which a record is to be taken for
          the purpose of such dividend or distribution or, if a record is
          not to be taken, the date as of which the holders of Common Stock
          of record to be entitled to such dividend or distribution are to
          be determined, or (B) the date on which such reclassification,
          reorganization, consolidation, merger, sale, transfer,
          dissolution, liquidation or winding up is expected to become
          effective, and the date as of which it is expected that holders
          of Common Stock of record shall be entitled to exchange their
          Common Stocks for securities or other property deliverable upon
          such reclassification, reorganization, consolidation, merger,
          sale, transfer, dissolution, liquidation or winding up.

               6.06  Reservation of Shares.
                     ---------------------
                    The Company will at all times reserve and keep
          available out of its authorized Common Stock, solely for the
          purpose of issue upon the conversion of the Debentures, such
          number of shares of Common Stock (or other security) as shall
          then be issuable upon the conversion of all outstanding
          Debentures.  The Company covenants that all shares of Common
          Stock (or other security) which shall be so issuable shall, upon
          issuance, be duly and validly issued and fully paid and non-
          assessable.

               6.07  Listing.
                    ---------
                    The Company shall, at its expense, cause the Conversion
          Shares before issuance, to be duly listed on any national
          securities exchange or automated quotation system on which the
          Common Stock of the Company is then listed.

               7.   Registration Rights.  7.01  Registration Statement.
                    --------------------        -----------------------
                    The rights of the Holder to have his Conversion Shares
          included in a Registration Statement filed by the Company under
          the Securities Act shall be as set forth in the Purchase
          Agreement. 

                    7.02 Compliance.
                         -----------
                    If, at the time of conversion of this Debenture a
          Registration Statement is not in effect covering the Conversion
          Shares issuable upon such conversion, the certificate for such
          Conversion Shares shall bear a restrictive legend similar to the
          legend set forth at the head of this Debenture and stop transfer
          orders may be placed against such certificate, subject to the
          then applicable provisions of the Securities Act and the rules
          thereunder.

               8.   Default.  8.01  Event of Default.
                    --------        ----------------
                    The existence of any of the following conditions shall
          constitute an event of default ("Event of Default"):

               (a)  If the Company defaults in the payment of any principal
          of or interest on, this Debenture when the same becomes due and
          payable, and the default continues for five (5) business days.

               (b)  If the Company defaults in complying with any other
          provision of this Debenture and the default continues for thirty
          (30) days after notice by the Holder to the Company, specifying
          the default.

               (c)  If an Event of Default shall occur and be continuing
          under any of the other Debentures or under any Senior
          Indebtedness.

               (d)  If the Company makes an assignment for the benefit of
          its creditors or admits in writing its inability to pay its debts
          as they become due.

               (e)  If, under any bankruptcy or insolvency law or similar
          law for the reorganization, arrangement, composition or other
          relief or aid of debtors or creditors:

                         (i)  the Company is adjudicated a bankrupt, or
                    takes or seeks to take or to have taken, or consents to
                    the taking of, any action with respect to it or a
                    substantial part of its property or affairs, or

                         (ii) without the consent of the Company, a court
                    or other governmental authority of competent
                    jurisdiction

                              (A)  approves a petition seeking any such
                         relief or aid with respect to the Company,

                              (B)  appoints a trustee, receiver or
                         liquidator of the Company or of a substantial part
                         of its property or affairs, or

                              (C)  assumes custody or control of a
                         substantial part of the property or affairs of the
                         Company for operation to the exclusion of the
                         management,

                    and the approval or appointment is not vacated, or the
                    custody or control is not terminated, within 60 days or
                    stayed on appeal.

               (f)  a final judgment shall be rendered against the Company
          for the payment of money with respect to which an amount in
          excess of $250,000 is not covered by insurance and the same shall
          remain undischarged for a period of thirty (30) consecutive days
          during which execution shall not be effectively stayed.

               8.02  Rights and Remedies.
                     --------------------
                    If an Event of Default occurs, then, and such Event of
          Default is continuing and unless the same shall have been waived
          by the Holder or by the holders of a majority of principal amount
          then outstanding on the Debentures (including this Debenture) (a
          "Majority of the Holders"), the Holder may, at any time, at his
          election, and by notice to the Company, declare this Debenture
          payable immediately, and thereupon this Debenture shall become
          payable on the date to which payment has been accelerated
          anything in this Debenture to the contrary notwithstanding, and,
          at any time thereafter, but subject to the provisions of Section
          2 of this Debenture, the Holder may proceed to collect the
          principal of and interest on, this Debenture, together with the
          costs and expenses (including reasonable attorneys' fees)
          incurred by the Holder in connection with a default under, or the
          enforcement of any provision of this Debenture.

               8.03  Additional Rights and Remedies; Waivers.
                    -----------------------------------------
                    In addition to the rights and remedies provided in
          Section 8.02 hereof, all other rights and remedies provided by
          law shall be available to the Holder and all rights and remedies
          shall be cumulative.  A delay by the Holder in exercising any
          right or remedy shall not constitute a waiver hereof.

               9.   Restrictions on Transfer.  
                    ------------------------
                    Any transfer or other distribution by the Holder of
          this Debenture or by any holder of any or all of the Conversion
          Shares (other than pursuant to an effective Registration
          Statement pursuant to Section 7 hereof) may be made only if the
          transferee of such Debentures or Conversion Shares (i) represents
          and warrants to the Company that he is acquiring all of the
          Debentures and Conversion Shares to be acquired by him for his
          own account for the purposes of investment and not with a view
          to, or for sale in connection with, any distribution thereof,
          (ii) agrees that he will not at any time sell or otherwise
          transfer, or permit the sale or other transfer of, such
          Debentures and Conversion Shares other than in transactions which
          are not in violation of the Securities Act, or the provisions of
          any other applicable securities laws, rules or regulations and
          (iii) agrees that he will indemnify the Company against any
          liabilities or damages resulting from a resale of such Debentures
          or Common Shares by him in violation of the Securities Act or the
          provisions of any other applicable securities laws, rules or
          regulations.  Each certificate representing such Conversion
          Shares and each certificate issued in exchange therefor may bear
          an appropriate legend that such Conversion Shares are not
          registered under the Securities Act.

               10.  Waiver of Covenants.
                    --------------------
                    Any act or thing which the Company does or omits to do
          with the written consent of a Majority of the Holders, which
          consent, whether given before or after the commission or omission
          of any act or thing, shall be binding upon the Holders of all of
          the Debentures and shall not constitute a violation of any of the
          provisions of Sections 5 or 6 hereof or an Event of Default.

               11.  Amendments.
                    -----------
                    This Debenture may be amended by a written instrument
          executed by the Company and the Holder; provided, however, that
          except as set forth below, the written consent of a Majority of
          Holders shall be binding upon the Holders of all of the
          Debentures.  Notwithstanding the foregoing, without the consent
          of the Holder of this Debenture, no such amendment shall be
          effective which will change the stated maturity of this
          Debenture, or reduce the principal hereof or the rate of interest
          hereon or otherwise modify the terms of payment of principal
          hereof or interest hereon. 

               12.  Communications.  
                    ---------------
                    No notice or other communication under this Debenture
          shall be effective unless, but any notice or other communication
          shall be effective and shall be deemed to have been given if, the
          same is in writing and is mailed by first-class mail or express
          courier, postage prepaid, addressed to

               (a)  the Company at 13 Columbia Drive, Suite 18, Amherst,
          New Hampshire 03031 Attention: Noel Wren, President, or such
          other address or person as the Company has designated in writing
          to the Holder,
          or
               (b)  the Holder at the address of the Holder as it appears
          on the books of the Company.

               13.  Construction.
                    -------------
                    The headings of this Debenture have been inserted as a
          matter of convenience, and shall not effect the construction
          hereof.  The use of a particular pronoun herein shall not be
          restrictive as to gender or number but shall be interpreted in
          all cases as the context may require.

               14.  Benefits.
                    ---------
                    This Debenture shall be binding upon the Company and
          its successors and assigns, and shall inure to the benefit of the
          Holder and his heirs, administrators, successors and assigns.

               15.  Applicable Law.
                    ---------------
                    This Debenture shall be governed by and construed in
          accordance with the laws of the State of Delaware.


 



               IN WITNESS WHEREOF, AMERICAN ELECTROMEDICS CORP. has caused
          this Debenture to be signed in its name by the signature of its
          President and attested by the signature of its Secretary.


                                        AMERICAN ELECTROMEDICS CORP.


                                        By ________________________________
                                            Noel A. Wren, President



          ATTEST:


          BY____________________________________
             Michael T. Pieniazek, Secretary

                                     [PAGE BREAK]

                                      ASSIGNMENT

               FOR VALUE RECEIVED                                    hereby
          sells, assigns and transfers unto                              ,
          whose Social Security or Identification No. is                 ,
          the within Debenture and all rights evidenced thereby and does
          irrevocably constitute and appoint                             ,
          attorney, to transfer said Debenture on the books of AMERICAN
          ELECTROMEDICS CORP. with full powers of substitution in the
          premises.


          Dated:


                                   Signature ______________________________

                                   Address   ______________________________

                                             ______________________________



                                     [PAGE BREAK]

                                   CONVERSION FORM


          AMERICAN ELECTROMEDICS CORP.


               The undersigned,                                     ,
          pursuant to the provisions of the within Debenture, hereby
          irrevocably elects to convert $               principal amount of
          the unpaid principal amount of said Debenture into the number of
          shares of Common Stock of AMERICAN ELECTROMEDICS CORP. into which
          such unpaid principal amount (or if this is a partial conversion,
          the amount set forth above) is convertible.

               I hereby acknowledge and agree that, unless a registration
          statement with respect to the Conversion Shares has become
          effective under the Securities Act of 1933, as amended (the
          "Act"):

               (i)   the certificate for the Common Shares may bear an
          appropriate legend that such shares are not registered under the
          Securities Act of 1933, as amended (the "Act"),

               (ii)  the Company may place a stop order on such shares, and

               (iii) that I will indemnify the Company against any
          liabilities or damages resulting from a resale of such shares by
          the holder in violation of the provisions of the Act or the
          provisions of any other applicable securities laws, rules or
          regulations.


          Dated:


                                   Signature ______________________________

                                   Address   ______________________________

                                             ______________________________

                                   Social Security or
                                     Identification No. ___________________




          --------------------
          1.   This amount must be for $1,000 or multiples thereof.


                                     [PAGE BREAK]

                              ENDORSEMENT FOR REDEMPTION

                        (No writing on the Debenture except by
                         an officer or agent of the Company)   
                         -------------------------------------


                                                     Original
                                                     Principal
                Original                              Amount
                Principal                             of this
                 Amount            Date of           Debenture       Authorized
                Redeemed         Redemption           Unpaid           Officer 
               ----------       ------------         ---------        -------- 

          1.

          2.

          3.

          4.

          5.

          6.

          7.

          8.