Doepfer

> Am I correct in assuming that since the A-121 multimode filter's 
lowpass
> and highpass have a -12dB slope, the slopes of the bandpass and 
notch
> filters are -6dB per side?

The A-121 is basically the standard two-pole state-variable filter 
built around a CEM3320 chip, so yes, in theory the bandpass will be 
6dB per side. The notch is simply the sum of the high and low pass 
sections, so this theoretically gives 12dB each side, BUT how well 
separated the two slopes are in reality, i.e. how much of a notch you 
actually get, is anybody's guess. And of course the amount of 
resonance will also affect all cut-off slopes too!

Tim