Filter Modules

• Analogue filter with VCA
• 24 dB low-pass filter with controls for filter frequency and resonance
• 2 Adjustable signal inputs
• 2 CV inputs with attenuators for VCF and VCA
• Keytracking input for VCF with attenuator (1 V/oct.)
• Integrated VCA with gain control and switch between linear and exponential control characteristics
• Current consumption: 22 mA (+12 V) / 20 mA (-12 V)
• Width: 16 HP
• Depth: 43 mm

• Analogue noise generator
• Provides 7 different noise sources
• 4 Static filters
• Adjustable tilt filter
• 2-Band Baxandall filter
• Power consumption: 39 mA (+12 V) / 17 mA (-12 V)
• Width: 18 TE / HP
• Depth: 50 mm
• Colour: Black

• Stereo multimode filter
• 4-Pole (-24 dB / oct.) state variable filter
• Configurable bandpass characteristic
• Cutoff control and resonance fader
• Two FM CV inputs, one with bipolar attenuator
• Spread CV input for shifting the filter frequencies between left and right channel
• Mono/stereo audio input
• Stereo outputs for high-pass, bandpass and lowpass
• Current consumption: 70 mA (+12 V) / 60 mA (-12 V)
• Width: 8 HP
• Depth: 32 mm

• Stereo Tilt Equaliser
• Spectral Tilt control for boosting treble while cutting bass or vice versa
• Tilt CV input with bipolar attenuator
• Spectral Motion switch allows synchronous or opposite spectral shifting of left and right channels
• Stereo input and output
• Current consumption: 40 mA (+12 V) / 40 mA (-12 V)
• Width: 4 HP
• Depth: 45 mm

• Analogue two-channel filter from the MS-20
• Each channel switchable between 12dB low pass and 6dB high pass
• Per channel controls for filter frequency, resonance, input volume
• 2 CV inputs for filter frequency (1 x with bipolar attenuator)
• Resonance CV input
• Link switch connects both filters in series
• Current consumption: 40 mA (+12 V) / 35 mA (-12 V)
• Width: 17 HP
• Depth: 47 mm

• Four-channel high-pass filter
• 4 Sections with 2 identical filters each
• Section 1 & 2: 30 Hz (-18 dB/oct.)
• Section 3 & 4: 100 Hz (-18 dB/oct.)
• Input and output per section
• Current consumption: 15 mA (+12 V) / 15 mA (-12 V)
• Width: 2 HP
• Depth: 40 mm

• 12 dB Multi-mode filter, in which the circuit of the SEM module is used
• Width: 8HP 40.3 mm
• Depth: 55 mm (measured from the rear of the front panel)
• Power requirements: +30 MA (+ 12V) / -20 mA (-12V)

• Polyphonic filter module with 4 analogue 24dB low-pass filters
• Common controls for filter frequency; filter modulation; resonance and input level
• All parameters controllable via CV with own attenuators
• Per filter: audio input; FM input; audio output
• Current consumption: 70mA (+12V) / 70mA (-12V)
• Width: 8 HP
• Depth: 50 mm

• Authentic reproduction of the original "System 100M" circuitry
• 2 Low-pass filters with cut-off frequency and resonance control
• Each filter has 3 audio outputs and 3 CV inputs with attenuators
• Each VCF has an additional switchable 3-mode high-pass filter
• 3-Channel mixer per VCF allows independent mixing of all input signals
• Current requirement: 40 mA +12 V, 40 mA -12 V
• Width: 16 HP

• Discrete 4-pole high-pass filter and 4-pole low-pass filter
• Controls per each filter for filter frequency, resonance (no self-oscillation), CV input for resonance, 2 CV inputs for filter frequency with bipolar attenuators, signal input and output
• Output of the high-pass filter is normalised to the input of the low-pass filter
• Power requirement: 40mA (+12V) / 10mA (-12V)
• Width: 21 TE
• Depth: 26 mm

• 12 dB Multi-mode filter, in which the circuit of the SEM module is used
• Cream-coloured front panel and black knobs
• Width: 8HP 40.3 mm
• Depth: 55 mm (measured from the rear of the front panel)
• Power requirements: +30 MA (+ 12V) / -20 mA (-12V)

• Dual multi-function module for use as a VCO, LFO or as an envelope generator
• 2 filter channels (with eight filter types each, routing- and mixing options, as well as multi-effects)
• Dimensions: 3 U / 26 HP x 26 mm (W x D)

• Analog stereo filter
• Offers 4 multi-mode filter cores that can be distributed in the stereo field
• Cutoff and resonance control for all 4 filters together
• CV input for left and right cutoff
• CV input for filter resonance
• Filter spread for left and right separately adjustable and with CV input
• Ping / trigger input for left and right
• Stereo input and output
• Filter outputs for low pass, bandpass, high pass and novel smile pass
• Pre-filter VCA with CV input
• Can also be used in dual-mono, mono-to-stereo and stereo-to-mono
• Current consumption: 166 mA (+12 V) / 190 mA (-12 V)
• Width: 18 TE
• Depth: 30 mm

• In contrast to the original circuit, the A-101-1 vactrols are used instead of diodes as variable resistors for frequency control
• 2 LEDs provide information on the currently set frequency and resonance
• Width: 16 HP / 80.9 mm
• Depth: 50 mm (measured from the rear side of the front panel)
• Power requirements: +30 mA (+12 V) / -30 mA (-12 V)

• 12 dB multimode VCF
• Controls for filter frequency, modulation depth, resonance and input level
• CV inputs for filter frequency (2x) and resonance
• Outputs for low pass, band pass, high pass and notch
• Current consumption: 40 mA (+12 V) / 30 mA (-12 V)
• Width: 4 HP
• Depth: 50 mm

• Analog voltage-controlled Dual-core filter module
• 10 Different filter types
• Frequency range: approx. 4 Hz to 28 kHz
• Input level adjustable via controller
• Non-linear feedback and cross-modulation
• Power consumption: +45 MA/-42 mA
• Dimensions: 14 HP

• Eurorack module
• Voltage-controlled multi-mode filter with a slope of -12 dB / octave
• 4 filter outputs with different filter characteristics available at the same time: lowpass, bandpass, highpass and bandstop (notch)
• Cut-off frequency (corner frequency) determines the point at which the respective filter effect occurs
• Resonance (Emphasis) Q can be set manually and via control voltage (voltage-controllable resonance)
• Width: 8 TE / 8 HP / 40.3 mm
• Depth: 50 mm
• Power requirement: +40 mA (+12 V) / -40 mA (-12 V)

Doepfer A-121-2 VE; 12dB Multimode Filter; Eurorack Module; Vintage Edition with black front panel; voltage-controlled multi-mode filter with a cut-off slope of -12 dB / octave; 4 Outputs are available simultaneous, each with different characteristics: low-pass, band-pass, high-pass and notch (or band reject); Resonance (Emphasis or Q ) can be adjusted manually, or by voltage control; Width: 8 TE / 8 HP / 40.3 mm; Depth: 50 mm; Current: +40mA (+12V) / -40mA (-12V)

• Variable dual filter
• 2 Identical channels based on the classic SEM filter
• Fade filter characteristics
• Outputs for low, band and high pass
• Common frequency CV input for both filters
• Parallel and serial operation switchable
• Dimensions: 28 TE