The result is a thick, stereo chorus sound that has been an integral component in many prog-rock, gospel and other classic organ sounds. It cannot be reproduced using simple chorus units and other attempts at recreating this unique sound in musical history have been nothing more than simple autopan effects.
Rotary cabinets usually have two rotating speakers known as the ROTOR and the HORN. The ROTOR handles low to mid frequency components in the sound whilst the HORN handles upper mid to high frequencies and these rotate at slightly different speeds which subtly thickens the sound. Furthermore, when switching between the cabinet's two speeds, due to mechanical inertia, the speakers take some time to speed up and slow down and, because of the different weights of the speakers, the rotor and the horn speed up/slow down at different rates (the heavier LF rotor taking longer, of course).
Add to this the distortion created by overloading the cabinet and a simple organ sound can become thick and fierce. Of course, rotary speakers aren't limited to only being used with organs - they can be used on any sound and many distinctive sounds have been created in the past by putting guitars, electric pianos - even vocals - through them. The ROTATOR plug-in authentically emulates these characteristics to create a very accurate simulation of the effect.
It is possible to set the slow and fast speeds of the effect and you can switch between these speeds using either the panel switch or nominated 'hotkeys' on your Mac/PC keyboard. The ACCEL (or 'acceleration') parameter allows you to set the rate at which the effect speeds up/slows down. The DISTORTION parameter allows you add some 'edge' to the sound to simulate the effect of the rotary cabinet being overdriven.
The BALANCE control allows you to set the relative balance of levels between the horn and rotor.
The final control - STEREO MIC SEPARATION - allows you to set the position of a pair of virtual microphones. When recording real rotary speakers, the placement of the microphones will yield different results. Placing them far apart will give a wide stereo sound whilst placing them closer together will give a narrower but more 'direct' sound. The STEREO MIC PLACEMENT control allows you to set the position of the simulator's 'virtual' mics. You can set the separation from mono to wide stereo. As you adjust the control, you will see the position of the virtual mics change in the graphic:
OS: Windows 98/98SE, Me, 2000
CPU: 400 MHz (or higher)
Memory 128 MByte (or greater)
MacOS 8.5 (or higher)
PowerMac G3/266 MHz (or higher)
128 MByte (or greater)
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