Vibchor+Rotor 2; Vibchor+Rotor 4; Block Diagram Of Vibchor+Rotor - Kurzweil K2600 Musician’s Reference

733 VibChor+Rotor 2

737 VibChor+Rotor 4

Vibrato/chorus into optional distortion into rotating speaker
PAUs: 2 for VibChor+Rotor 2
4 for VibChor+Rotor 4
The VibChor+Rotor algorithms contain multiple effects designed for the Hammond B3
mode). These effects are the Hammond
¨
(Leslie ). Each of these effects may be turned off or bypassed, or the entire algorithm may be bypassed.
L Input
Distortion Vibrato/
(Optional) Chorus
R Output
Figure 10-40

Block diagram of VibChor+Rotor

The Þrst effect in the chain is the Hammond vibrato/chorus algorithm. The vibrato/chorus has six settings
which are the same as those used in the Hammond B3: three vibrato (V1, V2, V3) and three chorus (C1, C2,
C3) settings. In VibChor+Rotor 4, the vibrato chorus has been carefully modelled after the electro-
mechanical vibrato/chorus in the B3. The vibrato/chorus in VibChor+Rotor 2 uses a conventional design,
which has been set to match the B3 sound as closely as possible, but does not quite have the same character
as the VibChor++Rotor 4 vibrato/chorus.
In VibChor+Roto 4 an ampliÞer distortion algorithm follows the vibrato/chorus. The distortion algorithm
will soft clip the input signal. The amount of soft clipping depends on how high the distortion drive
parameter is set. Soft clipping means that there is a smooth transition from linear gain to saturated
overdrive. Higher distortion drive settings cause the transition to become progressively sharper or
ÒharderÓ. The distortion never produces hard or digital clipping, but it does approach it at high drive
settings. When you increase the distortion drive parameter you are increasing the gain of the algorithm
until the signal reaches saturation. You will have to compensate for increases in drive gain by reducing the
output gain. These algorithm will not digitally clip unless the output gain is over-driven.
Finally the signal passes through a rotating speaker routine. The rotating speaker has separately
controllable tweeter and woofer drivers. The signal is split into high and low frequency bands and the two
bands are run through separate rotators. The upper and lower rotors each have a pair of virtual
microphones which can be positioned at varying positions (angles) around the rotors. An angle of 0¡ is
loosely deÞned as the front. You can also control the levels and left-right panning of each virtual
¨
vibrato/chorus, ampliÞer distortion, and rotating speaker
Pan
Rotator
Pan
Mic Levels
Pan
Rotator
Pan
KDFX Reference
KDFX Algorithm Specifications
¨
emulation (KB3
L Output
Cabinet
Out Gain
Cabinet
R Output
10-97