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P a g e
B o o k e r L A B ® © 2 0 1 7 - 2 0 1 9
Vintage Motor Controller (VMC) for Leslie Speakers (v19-0214)
[email protected] - +1 (864) 843-4459
Installing the VMC
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Make sure you can comfortably access the rear of the Leslie speaker cabinet.
IMPORTANT!
Disable power to the Leslie cabinet by disconnecting the large 6-
pin cable connected to the amplifier (lower left) by pulling it straight out.
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Remove the middle and lower panels from the back of the Leslie cabinet. The original
machine screws on most cabinets are slotted.
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Locate the Leslie power amp in the bottom left side of the cabinet. The vintage motors
use standard 2-prong household AC plugs. A single-speed Leslie has one plug per motor;
a dual-speed Leslie has two plugs per motor.
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The upper motors plug into the top of the amplifier and are typically marked Fast and
Slow (with the colors in parenthesis). Disconnect the cables from the amp. To keep track
pf upper from lower, you can wrap a rubber band, twist-tie, or string around the plugs.
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The lower motors plug into the front of the amplifier and are typically unmarked.
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Move the plugs up into the middle section of the cabinet and pass them through the
rectangular port on the middle panel.
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Pass the red VMC power cord through the same port and route the plug down through
the slot on the left side the amplifier.
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You should end up with 2-4 motor plugs and the red AC cord, figure-eight end, hanging
out of the middle panel. Secure the panel to the cabinet temporarily with one of the
stock mounting screws (upper right screw location is ideal).
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Locate the VMC on the upper left side of the middle panel. The holes will align with the
stock mounting holes in the cabinet. Use the supplied 10-24 mounting bolts to secure
the VMC to the cabinet. Add the remaining stock mounting screws.
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Connect the motor plugs to the outlets on the VMC. Upper motors on the left, lower
motors on the right. Connect the brown plugs to fast and white plugs to slow.
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Connect the AC power cord (red heat-shrink) to the VMC outlet marked AC In. Connect
the other end to the Leslie amp outlet marked Reverb Amp Only (or another suitable
outlet if your amp doesn’t have a Reverb outlet).
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Connect the appropriate half-moon switch and/or footswitch to the
Speed Control
Switch
and
Stop Switch / Memphis Mode
¼” jacks.
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Your Leslie speaker can now be controlled by external half-moon switches or
footswitches.