BookerLab BL-VMC, Manual, Page: 4 / 24

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Vintage Motor Controller (VMC) for Leslie Speakers (v19-0214)
info@bookerlab.com - +1 (864) 843-4459
Product Description
The Vintage Motor Controller (VMC) from BookerLAB provides complete motor control for
vintage Leslie® dual-stack motors.
The VMC allows a Leslie to be controlled with an AC Dual Motor Monitor (DMM; either internal
or external), a half-moon switch, a footswitch, or MIDI Controller. Each of these input devices
can select Tremolo, Chorale, or Stop, while an optional second switch provides Memphis Mode
and Stop Mode.
“Memphis Mode” simulates what vintage players did by unplugging the lower motors, thus
preventing the bass rotor from spinning at all. This feature is popular for using the organ bass
pedals on the bass string lines where the Leslie effect may not be desired. Memphis Mode on
the VMC emulates this effect by disabling the bass rotor while still allowing the horn rotor to
spin at the fast (tremolo) and slow (chorale) speeds. Stop Mode disables both sets of motors,
upper and lower, preventing rotation.
The VMC mounts inside or outside the Leslie cabinet and receives AC power from the
amplifier's reverb outlet, or another suitable AC outlet. The upper and lower motors then plug
into the Fast and Slow AC outputs on the VMC.
The VMC family is available in three versions:
•
BL-VMC – Vintage Motor Controller for external motor control
•
BL-VMC-MM – VMC with integrated Dual Motor Monitors (DMM)
•
BL-VMC-MIDI – VMC-MM with integrated MIDI Controller
VMC Family Comparison
VMC -MM -MIDI
Four AC outlets for controlling vintage dual stack motors
with fused (3A) main input
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Adds Memphis and Stop modes to stock Leslie speakers
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Speed controlled by half-moon switch, footswitch, or hard-wired switch
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Speed controlled by Dual Motor Monitor (DMM)
**
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Speed can be controlled via MIDI, or with a standard sustain pedal
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Status LEDs indicate input power (blue), Memphis mode (red), Stop mode (red),
Tremolo (green) and Chorale (yellow)
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Removable 3-pin terminal block (speed input) allows flexible application with
various remote switches and modes
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Bypasses or replaces the mechanical relays in older amplifiers
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Rugged, plastic, flanged enclosure mounts securely almost anywhere
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** Dual Motor Monitor (DMM) available as optional, external accessory.