The PSP L’otary2, is our ultra high quality emulation of a rotary speaker (VST, AAX and RTAS for Windows; AudioUnit, VST, AAX and RTAS for Mac OSX). We based our algorithm upon two original and legendary models: the Leslie® 122 and 147, and spent hundreds of hours perfecting our simulations. In other words, this is not just another modulation effect! PSP L’otary is capable of reproducing as [...]

Something magical happens when your sound goes through a rotating speaker. Nothing quite sounds like it. Spin recreates the wonderful sound of vintage rotary speakers with warmth and wonder. [...]

Originally invented in the 1940's, rotary speaker cabinets imaginatively employ the Doppler effect by firing a woofer into a rotating drum and a tweeter into a rotating horn. The results are much more harmonic than typical tremolo or vibrato effects, producing sounds ranging from rich and shimmering to gentle, dreamy and swirling. These novel speakers were quickly adopted by jazz organists, [...]

Spinn is a four-band rotating modulation effect. It has similarities to, but doesn't aim to replicate, a Leslie speaker (call it a spin-off if you like). Four rotors (one per frequency band) with individual speed controls, acceleration and deceleration times, adjustable size and modulation. Each band also has a velocity control, which will adjust the speed according to the band's input level. [...]