User Manual
STOMP SECTION 37
X-Over
Use the “X-Over” parameter to blend out the vibrato eect for the lower frequencies of the signal. This will
result in an old-school modulation eect, quite similar to a scanner vibrato of a Hammond organ.
Rotary Speaker
The Rotary Speaker chorus type is a faithful recreation of the sound produced by the legendary Leslie
speaker - best known for the classic eect it has on the sound of the Hammond organ. The Leslie speaker
modulates the sound by rotating both the bass speaker drum and the tweeter horn inside a cabinet - but,
crucially, they are rotated at dierent speeds from each other. The result is a complex example of the Dop-
pler eect, and the way it aects the sound is magical - something rather like combined vibrato, tremolo
and chorus.
Our Rotary Speaker eect won’t color the sound; instead, the coloration will come from the amp cabinet
profile. By engaging the Rotary Speaker on an amp and cabinet sound that you like, you turn your cabinet
into a rotary cabinet, while maintaining the character of your amp.
Interestingly, you can actually profile your own rotary cabinet. If you get the chance to have a real rotary
speaker in your studio, as long as you can connect line or guitar signals, you can take a profile of it. Please
refer to the Profiling Guide for further instructions. Of course, the KPA already comes with rotary speaker
profiles and rigs that we have captured from the real thing.
Speed
Use the “Rate” parameter to switch between Slow and Fast rotation. You will notice that the change in ro-
tation speed is not immediate, thus recreating the acceleration and deceleration of the rotating speakers in
the original.