TC Electronic SYSTEM 6000 MKII Algorithm Manual - Chorus - 1

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CHOrus - 1

Main

Chorus

Speed

Range: 0.1Hz to 10Hz

Controls the Rate of sweep in a range from 1 sweep every 

10 seconds to 10 sweeps every second.

Depth

Range: 0 to 100%

Determines how wide a modulation (sweep) is produced.

LFO Phase

Range: 0º - 90º - 180º

Determines the sine wave modulation phase shift between 

left and right channels. At 0º the left and right modulation 

will move in sync. At 180º the modulation will move the 

channels against each other.

Golden Ratio

Range: Off - On

For a smooth sounding Chorus effect set the Golden 

Ratio parameter in “on position”. This way an ideal setting 

between Speed and Depth is achieved. Basically this 

means that the higher Speed the less Depth is required to 

obtain the same feeling of Chorus amount.

Phase Invert

Range: Off - On

Inverts the phase of the Chorus in the right channel. This 

gives a considerably wider sounding Chorus effect.

FB Delay

Feedback 

Feedback

Range: 0 to 99%

Controls the amount of effect signal routed back to the 

Chorus Input (Flanging).

Feedback Lo Cut

Range: Off to 800Hz

Feedback Lo Cut enables you to remove low frequencies 

from the feedback loop.

Feedback Hi Cut

Range: 1 kHz to off

Feedback Hi Cut enables you to remove high frequencies 

from the feedback loop.

Delay

Delay

Range: 1 to 670ms

A Chorus is basically a Delay being modulated by an LFO. 

The Delay parameter controls the length of this Delay. 

A typical Chorus uses Delays of approx 10ms.

Hi Cut Freq

Range: 100Hz to flat

Hi Cut filter enables you to make the Chorus sound more 

“warm”. This is a 6dB per octave filter.

Hi Cut Att

Range: -40 to 0.0dB

Gain for Hi Cut filter. Adjustable in 0.5dB steps.

This algorithm that derives from the M5000 can produce 

high resolution Stereo Chorus and Flanging effects, or 

Modulated Stereo Delays of up to 650 ms per channel, 

and offers a modulation oscillator with relative L/R phase 

control. For micro-delay sensitive algorithms like flanging, 

note that predictable results are best obtained using a 

direct feed-through mixed inside the effect, rather than 

mixing the signals outside the algorithm. The System 6000 

implementation of Chorus 1 can be used with sample rates 

of up to 96kHz.

The Chorus algorithm occupies:

@ Normal Sample Rate  : 1/4 DSP Resource

@ Double Sample Rate  : 1/4 DSP Resource

  Algorithm Inputs/Outputs are distributed as follows:

E1 - E4

L

R

L

R

INPUT

OUTPUT

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