Technical information
APPENDIX 12
CB202 has everything the CB101 has, and also has a pre- lter section with the
following controls:
Frequency controls the cut-o frequency of the pre- lter. When the high- or
low-pass lters are activated, the signal level is −3 dB at the selected frequency.
When the band-pass lter is activated, the signal level is 0 dB at the selected
frequency.
Q controls the amount of overshoot/undershoot of the lter response when
the high- or low-pass lters are activated, or the bandwidth of the band-pass
lter when this is activated. For high- and low-pass lters, the ‘critical’ Q value
at which no overshoot/undershoot occurs is 1.4, which is the default setting of
the Q control. For Q values between 0.1 and 1.4, the lter will overshoot. For
Qvalues between 1.4 and 5.0, the lter will undershoot.
The Gain knob to the right of the Q knob controls the amount of cut or boost
when the parametric pre- lter type is selected.
Four Filter Type buttons let you choose the lter type that will be used to pre-
lter the input into the compressor. Available types are high pass, low pass,
band pass, and parametric.
The Pre-Filter button engages or bypasses the pre- lter and the Inline button
places the pre- lter output in the direct signal path so that the pre- ltered
signal is compressed and heard at the nal output.
CB202
Figure A12.12
CompressorBank
CB202.