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Thread: Connecting Crumar mojo XT to Leslie 51

  1. #1
    pp Pianissimo martin62's Avatar
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    Connecting Crumar mojo XT to Leslie 51

    Hello

    I'd like to ask if its possible to connect a Crumar mojo XT to a Leslie 51 using the 11pin out of the organ. Does it work with a 6 to 11 adapter? Chances to switch the Leslie speed with the controls of the organ also? is it possible to adapt the reverb signal to the 2nd channel of the Leslie? Maybe somebody knows? Thank you.

    Martin
    Hammond A-100
    Hammond M-100
    Leslies 51, 46 W, 330, 760

  2. #2
    ff Fortissimo picothinker's Avatar
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    The 51 is a single-speed, so you won't be able to change the speed easily without modification. Benton Electronics makes a very good 2-speed controller for it. https://bentonelectronics.com/shop/m...ed-conversion/
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    pp Pianissimo martin62's Avatar
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    Forgot to tell that the the 51 is converted to 2-speed. It's actually like a 251. But I can imagine that this Leslie interface from Crumar only fits to newer models like the 3300.
    Hammond A-100
    Hammond M-100
    Leslies 51, 46 W, 330, 760

  4. #4
    ff Fortissimo Sweet Pete's Avatar
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    The speed voltage control wire on the 11 pin could be sent to a midi relay?
    There are midi relays available to convert midi to 'mechanical' or electronic functions.
    Midi Solutions manufactures such a device.
    The device recognizes fast/slow/stop or whatever midi sys ex command you prefer.
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    pp Pianissimo toomanytoyz's Avatar
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    1 members found this post helpful.
    Is it possible? Yes. Is it easy? No. You could use a Hammond 1147 adapter, but you would have to rewire the input on the 51 to match the 147 (6W) standard. Doing so would lose the stationary channel. You could construct a custom interface, as I did, using a power supply, a preamp module, and solid state relays, but it's a lot of work.
    Hammonds:BV, B2 (2), B3, C3 (3) A102 (2) A105, RT3, M2 M3 (2) M-102, Porta-B B200. Leslies:45 (2), 51, 145 (2) , 122 (3) 710 (3) 760 (2) Pipe organ: Four Manual Kilgen Horseshoe console with 20 ranks of Moller theatre pipework, tuned percussions and toys (in storage) Electronic Organ: Rogers 321 running Hauptwerk.

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    pp Pianissimo martin62's Avatar
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    1 members found this post helpful.
    I see... not that easy. Another cradle is the different voltage of Leslie (110 V) and organ. Maybe easier to use the 330 Leslie which is 11pin.
    Hammond A-100
    Hammond M-100
    Leslies 51, 46 W, 330, 760

  7. #7
    p Piano Drawbar Dave's Avatar
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    Quote Originally Posted by martin62 View Post
    I see... not that easy. Another cradle is the different voltage of Leslie (110 V) and organ. Maybe easier to use the 330 Leslie which is 11pin.
    Thats the conclusion I reached when I had an 11 pin clone. I got a 330 for what I could have spent on the 1174 for my 147 or 9 pin version for my 770.
    1937 Hammond BC with Trek II Preamp, Percussion and Reverb
    1970 Leslie 147
    1968 MK2 Farfisa Compact Duo/1964 Binson Echorec 2/Leslie Combo Preamp

    Restored and rehomed; RT3, C3, M102, L122, T202, 122, 147, 760 x3, 330, 710, 825
    MK1 Solina, Rhodes Stage 73, MK1 Farfisa Compact Duo, Hammond XK3, Analog Korg BX3 and CX3s

    Formerly tonewheel1966

  8. #8
    pp Pianissimo martin62's Avatar
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    You mean this combination is working properly? Can you switch the speed with the onboard controls from the organ?
    Hammond A-100
    Hammond M-100
    Leslies 51, 46 W, 330, 760

  9. #9
    p Piano Drawbar Dave's Avatar
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    Yes I could.

    I also see you’re in Switzerland. Are you on 230 volt mains? I was told by Hammond UK that they stopped making the 230 volt versions of the modern hook up boxes because EU law banned them. I was going to buy a US spec model and modify it but they were temporarily out of production at the time and had none for sale. You find 230 volt ones on eBay but they are scarce.
    1937 Hammond BC with Trek II Preamp, Percussion and Reverb
    1970 Leslie 147
    1968 MK2 Farfisa Compact Duo/1964 Binson Echorec 2/Leslie Combo Preamp

    Restored and rehomed; RT3, C3, M102, L122, T202, 122, 147, 760 x3, 330, 710, 825
    MK1 Solina, Rhodes Stage 73, MK1 Farfisa Compact Duo, Hammond XK3, Analog Korg BX3 and CX3s

    Formerly tonewheel1966

  10. #10
    pp Pianissimo martin62's Avatar
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    Yes 230 volt. You are writing about the 6 to 11 pin adapter? It's the Crumar mojo XT I have an eye on. I don't own one yet. I want to clarify if I can connect with a 330 Leslie.

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