Rotary Effects; Vc+Dist+1Rotor 2; Vc+Dist+Hilorotr; Vc+Tube+Rotor 4 - Kurzweil K2661 Musician’s Reference Manual

Rotary Effects

738 VC+Dist+1Rotor 2

739 VC+Dist+HiLoRotr

740 VC+Tube+Rotor 4

741 Rotor 1
742 VC+Dist+HiLoRot2
Rotating speaker algorithms
PAUs: 1 for Rotor 1
2 each for VC+Dist+1Rotor 2, VC+Dist+HiLoRotr,
and VC+Dist+HiLoRot2
4 for VC+Tube+Rotor 4
The rotary algorithms contain multiple effects designed for the Hammond B3
These effects may include the Hammond
rotating speaker (Leslie
different circumstances Some of the algorithms are designed to trade off features or model quality to allow
the rotating speaker model to work in fewer PAUs.
The first effect in the chain is often 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 VC+Tube+Rotor 4, the vibrato chorus has been carefully modeled after the
electromechanical vibrato/chorus in the B3. The vibrato/chorus in the other smaller algorithms use 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 fully modeled vibrato/chorus.
The final section of each of the rotary algorithms is the rotating speaker routine. The various algorithms
may trade off some features of the rotating speaker routine and the tradeoffs will be discussed for each
algorithm separately. However as an introduction, let's discuss a full featured rotating speaker.
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 rotors. The upper and lower rotors
each have a pair of virtual microphones that can be positioned at varying positions (angles) around the
rotors. An angle of 0° is loosely defined as the front of the speaker. You can also control the levels and left-
right panning of each virtual microphone. The signal is then passed through a final lowpass filter to
simulate the band-limiting effect of the speaker cabinet.
Figure 52
®
). A variety of rotating speaker algorithms have been designed to deal with
Rotating speaker with virtual microphones
®
vibrato/chorus, amplifier distortion, cabinet emulation and
KDFX Reference
KDFX Algorithm Specifications
®
emulation (KB3 mode).
10-121