BEHRINGER / SURGES

A voltage controlled filter with high pass, band pass and low pass outputs, with additional 2 or 4 pole configurations for band pass and low pass.

Voltage-controlled multimode filter offering high-pass, band-pass and low-pass. The slope of the band-pass and low-pass outputs is switchable (2- or 4-pole).

Based on Mutable Instruments Ripples

Liquid, musical tone coloring reminiscent of SH/Jupiter filters

Loudness compensation with increased resonance

Wide frequency range from 18 Hz to 18 kHz

Pure analog circuitry based on legendary 2164 and 13700 semiconductors

Eurorack spec 8 HP, 35 mA +12 V, 35 mA -12 V

Other inputs and outputs
Audio input - signals from inputs 1 and 2 are mixed, input 1 has a dedicated level knob that can be pressed for an overdriven sound.
CV input - Resonance and cutoff modulation
Voltage controlled gain for low pass output - allows external control of LP signal level

Specifications

Inputs
Audio input 1
3.5 mm TS jack, impedance 100 kΩ

Audio input 2
3.5 mm TS jack, impedance 100 kΩ

Frequency CV
3.5 mm TS jack, range -8 V to +8 V

Resonance CV
3.5 mm TS jack, range -8 V to +8 V

Voltage/octave
3.5 mm TS jack, range -3 V to +7 V

LPF output level
3.5 mm TS jack, range 0 V to +7 V

Outputs
High pass filter
3.5 mm TS jack, impedance 1 kΩ

Band pass filter
3.5 mm TS jack, impedance 1 kΩ

Low pass filter
3.5 mm TS jack, impedance 1 kΩ

Controls
Frequency

Resonance

Frequency CV Attenuator

Input 1 Gain

Switch
Filter Slope

2HP