10.6

Table Of Contents
633Logic Pro Instruments
Deflector switch: Emulate a Leslie cabinet with the horn deflectors removed or
attached. A Leslie cabinet contains a double horn, with a deflector at the horn mouth.
This deflector makes the Leslie sound. You can remove the deflector to increase
amplitude modulation and decrease frequency modulation.
Logic Pro Vintage B3 Motor parameters
The advanced cabinet parameters are divided into three groups: Cabinet, Motor, and
Brake. See also Logic Pro Vintage B3 Cabinet parameters and Logic Pro Vintage B3 Brake
parameters.
The microphone parameters are described in Logic Pro Vintage B3 Microphone parameters.
Motor parameters
Acceleration knob and field: Set the time required for the rotors to attain the speed set
with the Max Rate knob and also the time required for them to slow down. The Leslie
motors need to physically accelerate and decelerate the speaker horns in the cabinets,
and their power to do so is limited. Turn Acceleration to the far left position to switch to
the preset speed immediately. As you rotate the knob to the right, it takes more time to
hear the speed changes. At the default, centered, position the behavior is Leslie-like.
Max Rate knob and field: Set the maximum possible rotor speed.
Motor Control pop-up menu: Choose different speeds for the bass and treble rotors.
Use the Rotation switch to choose slow, brake, or fast mode. See Logic Pro Vintage B3
Rotor Cabinet window.
Normal: Both rotors use the speed determined by the Rotation switch position.
Inv (inverse): In fast mode, the bass compartment rotates at a fast speed, while the
horn compartment rotates slowly. This is reversed in slow mode. In brake mode, both
rotors stop.
910: The 910 (also known as “Memphis”), stops the bass drum rotation at slow
speed, while the speed of the horn compartment can be switched. This is useful
when you’re after a solid bass sound but still want treble movement.
Sync: The acceleration and deceleration of the horn and bass drums are roughly the
same. This sounds as if the two drums are locked, but the effect is clearly audible
only during acceleration or deceleration.
Note: If you choose Single Cabinet from the (Cabinet) Type pop-up menu, the Motor
Control setting is not relevant because there are no separate bass and treble rotors in a
single cabinet.