Dual multimode filter

Dual multimode filter with CV-controlled, continuously variable filter response, filter routing, and an overdrive/wavefolding stage for each filter.

An essential overdrive circuit

• A CV-controlled overdrive stage precedes each of the two filters.
• Overdrive response continuously adjustable between soft-clipping and 2-stage wavefolding.

Two rich multimode filters

• Clean 2-pole (12dB/octave) state-variable design.
• CV-controlled filter response, continuously variable between low-pass, band-pass and high-pass.
• CV inputs with attenuverters for cutoff and resonance.
• Unattenuated frequency CV input, calibrated for 1V/Oct tracking.
• Clean and constant amplitude self-oscillation across the audio range, extending into very low frequencies.
• Modulating the filter response is akin to modulating the phase of the self-oscillation tone.

Unique routing possibilities

• Continuously variable (and CV-controlled) routing from single to parallel to series.
• With a signal patched into filter 2's audio input, the routing knob and CV act as a crossfader.
• Filter 2's cutoff can be set relatively to filter 1's cutoff.

Specifications

• Fully analog, based on the V2164 quad VCA chip.
• Frequency knob range: 8Hz to 18kHz.
• Audio input impedance: 30k.
• DC-coupled audio inputs.
• Filter mode CV input impedance: 50k.
• Other CV inputs impedance: 100k.
• All CV inputs handle audio-rate modulations.

http://mutable-instruments.net/modules/blades

• 150 mA +12V
• 140 mA -12V
• ? mA 5V
• 25 mm Depth

This module is discontinued.