Kurzweil K2661 Musician’s Reference Manual page 273

Drive Cut Reduces the signal level after the distortion. By reducing the signal level after the
distortion, Chaos! can be returned to stability while still producing a lot of distortion.
Drive Cut is also inside the feedback loop.
Warmth Warmth affects the character of the distortion. Warmth reduces (at low settings) the higher
frequency distortion components without making the overall signal dull.
Dly FreqC The feedback signal path includes a short delay line which will tend to resonate at a
frequency of 1/length of the delay. The delay length is therefore expressed as the resonant
frequency. Note that all the filters in the feedback loop also add delay, so with more
filtering, the resonance tuning will drift flat.
Dly FreqF The resonant frequency of the feedback delay line can be tuned sharp or flat in one cent
(hundredths of a semitone) increments.
FB Invert The feedback signal can be inverted (subtracted instead of added) so that instead of
resonance at the specified frequency and its harmonics, the resonance occurs between
those frequencies. This is like setting resonance one octave lower, but using only the odd
harmonics.
Highpass The highpass filter removes frequencies below the specified cut-off frequency. The filter is
first order, cutting signal level at 6 dB per octave of frequency. When set to the lowest
frequency, the filter is performing very little cut of the low frequencies. When Chaos! is
self-resonating, turning up the highpass frequency will cause high frequencies to be
emphasized.
Lowpass The lowpass filter removes frequencies above the specified cut-off frequency. The filter is
first order, cutting signal level at 6 dB per octave of frequency. When set to the highest
frequency, the filter is performing very little cut of the high frequencies. When Chaos! is
self-resonating, turning down the lowpass frequency will cause low frequencies to be
emphasized.
Bass Gain The amount of boost or cut in decibels to apply to the bass shelf filter inside the feedback
loop. Boost will emphasize frequencies below the filter frequency, while cut will
emphasize frequencies above the filter frequency.
Bass Freq The frequency in Hz below which the bass shelf filter performs boost or cut.
Treb Gain The amount of boost or cut in decibels to apply to the treble shelf filter inside the feedback
loop. Boost will emphasize frequencies above the filter frequency, while cut will
emphasize frequencies below the filter frequency.
Treb Freq The frequency in Hz above which the treble shelf filter performs boost or cut.
Midn Gain The amount of boost or cut in decibels to apply to the midrange parametric filter n (1 or 2)
inside the feedback loop. Boost will emphasize the specified filter frequency while cut will
emphasize all other frequencies.
Midn Freq The frequency in Hz at which the midrange parametric filter n (1 or 2) performs boost or
cut.
Midn Width The width of the frequency band in octaves of the midrange parametric filter n (1 or 2).
When the filter is set for boost, a narrow band (low settings) will cause the resonating
output to approach a pure tone more rapidly.
KDFX Reference
KDFX Algorithm Specifications
10-191