Kurzweil K2661 Musician's Manual page 506

DSP Functions
The DSP Functions
are high-amplitude partials, the signal may clip. The Pad parameter on the F1 FRQ page will
reduce the clipping, but there's no harm in keeping it if you like the sound.
Parameter
Adjust
Key Tracking
Velocity Tracking
Source 1
Source 1 Depth
Source 2
Source 2 Depth Control
Minimum Depth, Source 2
Maximum Depth, Source 2
Two-pole Lowpass Filter, -6 dB Resonance (LOPAS2)
Using this filter is the same as using two one-pole lowpass filters in successive algorithm blocks.
Since its resonance is fixed at -6 dB, it's also the same as using 2POLE LOWPASS with the
resonance set to -6 dB. You'd use this filter when you want a 12 dB per octave rolloff but don't
need to set a resonance level. This would leave you free to use another DSP function in the
algorithm, since it's a one-stage function.
16-10
Range of Values
-12 to +48 dB
± 2.00 dB per key
-30 to +60 dB
Control Source list
-30 to +60 dB
Control Source list
Control Source list
-30 to +60 dB
-30 to +60 dB
Frequency in Hertz
10 100
0
-10
C 4
-20
-30
-40
-50
Resonance = 0 dB;
-60
cutoff frequency
from C 4 to C 10
-70
-80
1000 10000
C 10
100000