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Identifying Upper and Lower Manuals

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  • Identifying Upper and Lower Manuals

    Hello Forum,

    I have been away from restoring for a very long time just started again on a project I have had in bits a M100, starting with a cabinet restoration which has gone nicely. I have been away for such a long time seems I have forgotten everything I once knew and I stupidly didnt make any identifying marks on the manuals to tell me which is which visually. They are stripped down about as far as you can go putting the end blocks and key plates back on. The service manual states they are tapered differently so I really dont want to get them the wrong way around

    Would someone with a little more wisdom be able to enlighten me with a method of identification?

    One has a hook on the bottom to hold the wiring loom that may help identify tried to find pictures online to no avail.

    Thank you, its good to be back :)
    Hammond M-100

  • #2
    It’s a long time since i restored an M100 and I can’t remember much about the manuals, but won’t one of them have clips to hold the long metal cover over the switches? The grey metal box, not the black part which fits to the cabinet IIRC.
    Hammond C3, M102, H112, XB3, XB5, X5, TTR-100
    Lowrey Heritage DSO-1, Yamaha E70
    Farfisa Compact Duo Mk2, Vox Continental 300, Gibson G201, Korg BX3 Mk1
    Leslie 122 x2, 145 x2, 910
    www.drawbardave.co.uk

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    • #3
      I thought that the metal topside of the upper manual extends under where the drawbars would be, so if one of your manuals has an excess of metal at the bass end of the keys, wouldn't that be your upper? I think the upper manual should also have one more busbar (and thus an extra row of key contacts) than the lower.
      Farfisa Mini Compact V1, Fender Rhodes 73 Mk. 1, Hammond B2, Hammond L-102 "El Choppo", Hammond M-101, Hohner Cembalet CF, Hohner Cembalet N, Hohner Favor Combo, Hohner Pianet L, Hohner Pianet T, Hohner Symphonic 30N, Leslie 145, Leslie "430" (former 130 cab with horns and light show added), Nord Electro 3, and an entire village of guitars and harmonicas.

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      • #4
        Originally posted by theseacowexists View Post
        I thought that the metal topside of the upper manual extends under where the drawbars would be, so if one of your manuals has an excess of metal at the bass end of the keys, wouldn't that be your upper? I think the upper manual should also have one more busbar (and thus an extra row of key contacts) than the lower.
        Actually, both manuals have 9 busbars in the M-100 - but the lower has two of them wired together on a common drawbar.
        Current organs: AV, M-3, A-100
        Current Leslies: 22H, 122, 770

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