Rotary
The MPX 100 rotary effect is a detailed
simulation of a Leslie-style cabinet. The in-
put signal is split into high and low frequency
bands. The rotation effect is created by a
synchronized combination of pitch shifting,
tremolo and panning. Like the physical model,
the high (horn) and low (drum) frequencies
are “spun” in opposite directions. Horn and
drum speeds are independent, and are de-
signed with acceleration and deceleration
characteristics to simulate the inertia of the
original mechanical elements.
A virtual requirement for any organ sound,
the rotary effect also sounds great with guitar
and electric piano rhythm parts. In fact, it’s a
great alternative to chorus and tremolo ef-
fects for any sound source.
All of the variations of this program (9-16)
should be used with Mix set to fully Wet for
the full effect.
25
Rotary speaker cabinets were originally designed to provide a majestic vibrato/
choir effect for electronic theater and church organs. The most well known rotary
speaker is the Leslie™ Model 122, which has two counter-rotating elements — a
high frequency horn and a low frequency rotor with slow and fast speeds. The
sound generated as the spinning elements change speed is truly magical. The
swirling, spacious effect is hard to describe, but is instantly reconizable.
Rotary VARIATIONs Adjust Tap
9 Rotary Slow/Fast –
10 Rotary Slow/Fast, Width –
11 Rotary Slow/Fast, Balance –
12 Slow Rotary ± Resonance –
13 Varispeed Rotary Speed –
14 Tap Rotary Balance Rate (Quarter-Note)
15 Tap Rotary Width Rate (Quarter-Note)
16 Tap Rotary ± Resonance Rate (Quarter-Note)