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  • T-series chop

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ID:	735671 I was thinking about purchasing this T series chop. I wanted to get some expertise to see if it would be worth it. I hear that they are solid state. So what would the situation with the preamp be?

  • #2
    Does it have any electronics at all in it?
    Tom in Tulsa

    Fooling with: 1969 E100, 1955 M3, 1963 M100, Leslie 720

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    • #3
      The percussion and vibrato were removed but I’m fine with that for the sake of portability. But I’m trying to find a t-series service manual to look at what should still be in there. I don’t see a pre amp however. And I’m guessing that run capacitor hasn’t been changed.

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      • #4
        Do you see a 1/4" jack anywhere on it? My guess would be that's what they did, then patch the thing into a guitar amp, or something. I repaired a little Marshall amp for a client recently and to try it out I connected it directly to the matching transformer of my CV. Sounded pretty good! The T organs have a *bunch* of circuit boards all wired together with the tab switches, etc. If you don't see anything like that in the chop, I'll bet they were just coming off the transformer.
        Tom in Tulsa

        Fooling with: 1969 E100, 1955 M3, 1963 M100, Leslie 720

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        • #5
          Depending on price, that's a great chop. Built a couple very much like that in my day.
          Yes, it'll have a 1/4 out somewhere on it. Not real hard to do if it doesn't.

          Then you can grab any combination of guitar pedals you want. Tube preamp? Sure. Or any other distortion you like. Phasers, flangers, and especially chorus. Build a pedal board and away you go. Notta fully functioning Hammond, but you knew that going in.

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          • #6
            Hi, it looks a tad short on drawbars, is it single manual?
            From what I see in the box, it very much looks like a passive build that takes instrument level off the MT and into a DI as a preamp somewhere. And, as ToG mentioned, it is ripe for adding pedals and whatever subsequent amplification you fancy.

            Also, swap that Run Capacitor as soon as you can
            a) it is probably crapped out and
            b) it is full of nasties if it pops !
            1966 C-3 / 925
            1965 M102 / 145
            1967 M111A / 330

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            • #7
              And the generator is fitted backwards (!)
              Current organs: AV, BC, A-100
              Current Leslies: 22H, 142, 147, 760
              Organs in the past: L-100 (several), M-100 (x2), T-100, E-100, CV
              Other keyboards: Roland FP-4, Yamaha DX7, Yamaha TX81Z, Yamaha Motif ES Rack, Korg Krome, Novation Mininova

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              • #8
                Just noticed something else: it might be a T-series generator, but it has the matching transformer and drawbars from an M-100. Wonder where the manual comes from?
                Current organs: AV, BC, A-100
                Current Leslies: 22H, 142, 147, 760
                Organs in the past: L-100 (several), M-100 (x2), T-100, E-100, CV
                Other keyboards: Roland FP-4, Yamaha DX7, Yamaha TX81Z, Yamaha Motif ES Rack, Korg Krome, Novation Mininova

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                • #9
                  Thanks for the help y’all. He said that it comes with a matching transformer and capacitor start. There is a 1/4 inch coming out the front. Yes it is only one manual and I will change the run cap as soon as I get it. Is it a problem that the generator is backwards?

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                  • #10
                    Should be fine. There is a possibility the matching transformer could pick up hum from being near the motor, but you could move the transformer to the other end If needed.
                    Tom in Tulsa

                    Fooling with: 1969 E100, 1955 M3, 1963 M100, Leslie 720

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                    • #11
                      Should have tons of key click and growl like a beast since there's no extraneous circuitry to dull the sound coming straight off the matching transformer.
                      It appears to have the bare mimimum components required to generate the tones, mix them via drawbars and output via transformer.

                      Play it through a Marshall stack.
                      Job. Done. Instant Jon Lord.

                      Replace the motor run cap immediately - it's a time bomb
                      Current:
                      1971 T-202 with Carsten Meyer mods: Remove key click filters, single-trigger percussion, UM 16' drawbar volume correction. Lower Manual bass foldback.
                      Korg CX3 (original 1980's analogue model).
                      1967 Leslie 122 with custom inbuilt preamp on back panel for 1/4" line-level inputs, bass & treble controls. Horn diffusers intact.
                      2009 Marshall 2061x HW Plexi head into Marshall 4x12 cabinet.

                      Former:
                      1964 C3
                      196x M-102
                      197x X5
                      197x Leslie 825

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