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Hammond M3 AO28 Amplifier (1950s) Wires?

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  • Hammond M3 AO28 Amplifier (1950s) Wires?

    I have acquired a Hammond M3 AO28 Amplifier (1950s) and was wandering if anyone on here knows what is going on here? Looks like someone has patched into some wires and attached an old speaker cable of some sort? Can you see whats going on here?

    Pictures Attached:

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  • #2
    The two wires coming through the enclosure top to Terminal D are correct, they both should be there. The other wire with the RCA plug is an add on, and not from the factory. Simply remove it and all should be well.

    BTW, the M3's have an AO-29 amp. Its big brothers, the B3-C3-A100-RT3-D100 has the AO-28.

    Joe

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    • #3
      Looks to be an attempt at a line out.

      Jim

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      • #4
        Originally posted by joecool240 View Post
        The two wires coming through the enclosure top to Terminal D are correct, they both should be there. The other wire with the RCA plug is an add on, and not from the factory. Simply remove it and all should be well.

        BTW, the M3's have an AO-29 amp. Its big brothers, the B3-C3-A100-RT3-D100 has the AO-28.

        Joe

        Oh my bad. I wrote that wrong. I meant the AO-29.

        My guess is that that attempt didnt work...

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