Dual Resonant Filter based on CEM 3350.
This is a versatile module which may be switched between resonant filtering, i.e.: enhanced bands plus original, and straight band pass filtering. The frequency range is from 25Hz to 4kHz and resonance (Q) may be varied from 0.5 to 10. The gain may be varied independently of Q so that both wide and narrow bands may be fully enhanced. Manual and external voltage control of both frequency and Q with attenuators for external frequency control. Resonant filters are essential for a more realistic simulation of conventional instruments but the added facilities of the 80-16 allow some novel effects to be achieved.