Filter Modules

• Combination of low-pass filter (LP) and VCA
• Based on the idea of the Buchla module 292
• The frequency (in LP mode) or the amplitude (in VCA mode) can be controlled manually (F / A) and via 2 external control voltage inputs: CV1 (without an attenuator) and CV2 (with attenuator)
• Function of the module can be set via toggle switch (LP / VCA )
• Width: 8TE / 8HP / 40.3 mm
• Depth: 50 mm (measured from the rear of the front panel)
• Power requirements: +20 mA (+12 V) / 20 mA (-12 V)

• Eurorack format
• Voltage controlled low pass filter, similar to Arp 4072
• 24 dB/Oct
• Controls for frequency and resonance, full/half track, frequency CV1, frequency CV2, resonance CV, input, output
• Switchable filter tracking: Full/Half
• Inputs: : Audio, 1 V/O, frequency CV 1, frequency CV 2 and resonance CV
• Outputs: 2x audio
• Width: 12 TE / HP
• Depth: 40 mm
• Power consumption: +27 mA (+12 V) / -34 mA (-12 V)

• Analogue low pass filter
• Slope switchable between 2-pole (12dB/oct.) and 3-pole (18dB/oct.)
• Controls for frequency, feedback (resonance) and input level
• CV inputs with attenuator for frequency and feedback
• Second CV input for frequency
• Two audio inputs and one audio output
• Current consumption: 22mA (+12V) / 18mA (-12V)
• Width: 8 HP
• Depth: 37 mm

• Analogue filter, mixer, and VCA
• 3-in-1 Mixer
• Filter in series circuit: 24 dB resonant low pass filter, 18 dB non-resonant high pass filter
• Exponential VCA with peak LED
• 4 LEDs for level control
• Current draw: 61 mA (+12 V) / 69 mA (-12 V)
• Width: 10 HP
• Depth: 35 mm

• Digital two-channel multimode filter
• 2-Pole state-variable digital filter modelled on "virtual analogue" filters from the 90s
• Filter type per channel can be faded between low-pass, band-pass, high-pass and notch
• Cutoff and resonance adjustable per channel
• 3 CV inputs per channel (1x cutoff, 2x freely assignable)
• Link function for filter B allows parallel "dual peak" connection
• Serial 4-pole cascading and stereo operation
• Input stage with gain/overdrive control and digital VCA per channel
• Preset manager with 8 memory locations
• Preset morphing and CV control
• Outputs for filter A, filter B and filter mix
• Current consumption: 105 mA (+12 V) / 35 mA (-12 V)
• Width: 15 HP
• Depth: 40 mm

• Analogue multimode filter
• Knobs for cutoff, resonance and input level (with germanium overdrive)
• CV input for cutoff and resonance, each with attenuator
• Outputs for lowpass, bandpass and highpass
• Current consumption: 27 mA (+12 V) / 29 mA (-12 V)
• Width: 10 HP
• Depth: 35 mm

• Two-channel filter and overdrive
• Cutoff frequency, resonance and overdrive are adjustable per channel
• Switch for lowpass/highpass mode per channel (-12 dB/oct.)
• Cutoff and resonance controls for joint control of both channels
• Cutoff CV input per channel with attenuator for both channels
• Audio input/output per channel and common stereo output
• Current requirement: 20 mA (+12 V) / 20 mA (-12 V)
• Width: 16 HP
• Depth: 28 mm

• Analogue two-channel multimode filter
• Switchable stereo mode
• Per channel: Controls for cutoff and resonance, cutoff CV input with attenuator, audio input and outputs for highpass, bandpass and lowpass
• Current consumption: 70 mA (+12 V) / 70 mA (-12 V)
• Width: 6 HP
• Depth: 40 mm

• Combination of VCA and filter: Input gain control allows wide control range for targeted overdriving
• Discrete low-pass filter with resonance
• VCA with linear and exponential CV input - each with bipolar attenuator
• Cutoff CV input with bipolar attenuator
• Current consumption: 85mA (+12V) / 83mA (-12V)
• Width: 10 HP
• Depth: 27 mm

• CV-controlled 12-band fixed filter bank
• Level faders per filter band
• CV input
• Envelope follower output and audio output
• Inputs for odd and even bands, each with gain control
• Frequency Scan and Spectral Tilt for modulating and sweeping the bands
• Can also be used as a 6-band vocoder
• Current consumption: 210mA (+12V) / 185mA (-12V)
• Width: 34 HP
• Depth: 30 mm

• Contains 3 separate bandpass filters with identical features
• Adjustable input level with switchable gain (x 3 or x 100)
• Adjustable frequency and bandwidth (each with a CV input and an attenuator)
• Slope switchable between 6 dB / 12 dB
• Feedback control
• Adjustable output level with a phase switch, a CV input and an attenuator
• Dry level control (with a CV input and an attenuator)
• Individual input and output per filter as well as two mix outputs
• Current consumption: 250 mA (+12 V) / 250 mA (-12 V)
• Width: 22 HP
• Depth: 35 mm

• Tunable 6-channel bandpass filter and resonator
• The frequency of each filter / resonator is quantisable to one of 11 tone scales and/or follows the pitch CV
• Level fader with CV input and lock button per channel
• Envelope follower output per channel
• Two pitch inputs (1V/oct.) for even and odd channels, each with switchable locking function
• Resonance control with CV input
• Rotate encoder (with CV and trigger inputs) transposes all bands within the defined tone scale
• Morph and spread control with CV input
• Scale CV input
• Stereo input and output
• Power consumption: 110mA (+12V) / 28mA (-12V)
• Width: 26 U
• Depth: 24 mm

• Analogue -24dB/oct
• Low pass filter with resonance
• 3 Frequency ranges switchable
• 3 CV inputs for filter frequency
• Current consumption: 65mA (+12V) / 50mA (-12V)
• Width: 8 HP
• Depth: 38 mm

• Exact replica of the legendary Ladder filter
• Low pass with edge steepness 24 dB/octave
• 1/3 and 2/3 CV inputs for original keyboard tracking
• Three audio inputs with integrated mixer
• CV input for resonance (Emphasis)
• Width: 14 TE / HP
• Depth: 26 mm
• Power consumption: +45 mA (+12 V) / -30 mA (-12 V)

Doepfer A-121s VE; Eurorack module; Vintage Edition with black front panel; Stereo Multimode VCF; continuously controllable characteristic for each filter (lowpass to notch and highpass to bandpass) with switchable link; manual common controls for filter frequency and resonance; bipolar Delta F control for adjusting the spread between both filter frequencies; CV inputs with attenuverters for filter frequency 1 & 2, common filter frequency and Delta F; per filter CV input with attenuator for resonance or characteristic (configurable via jumper); two audio inputs with level controls and two audio outputs; filter slope: -12dB/oct.; power consuption: 100mA (+12V) / 100mA (-12V); width: 12 HP; depth: 45mm

Erica Synths Black 3109 VCF/VCA; Eurorack module; lowpass filter (24dB/oct.) with buidl-in VCA; manual controls for Cutoff, Resonance and input level; switchable volume compensation avoids volume drop at high resonance settings; VCF and VCA CV inputs with attenuators; second CV input for cutoff frequency with 1V/oct. tracking; expandable with Black VCF Coupler (item 518167); power consumption: 25mA (+12V) / 25mA (-12V); width: 10 HP; depth: 35mm

• Emulation of the Russian synthesizer Polivoks by the Formanta Radio Factory
• The original Russian K140UD12 ICs are used
• Filter modes: BP (6 dB / Oct) / LP (12 dB / Oct)
• Controls for input level, resonance, CV1 level and CV2 level
• Cutoff control
• Power consumption: + 11 mA, -11 mA
• Dimensions (W x D): 10 HP / 25 mm