This multimode filter has two signal inputs mixed at unity gain and allows selection of one of fourteen possible filter configurations from front panel switches. If the resonance control is set high enough, the filter will start to oscillate.
Three CV inputs are provided. A 1V/Octave input controls the filter cutoff frequency in conjunction with the panel frequency control. A second frequency CV input has a level control, the resulting voltage being added to or subtracted from the base cutoff frequency resulting from the panel frequency control and 1V/Oct inputs. A resonance CV input followed by an attenuverter is combined with the panel resonance control to determine the amount of resonance that will occur. If the resonance control ia turned past about 80, the filter will start to oscillate with a clean sine waveform.
The MU version is housed in a 1MU (2.125 inch wide by 8.75 inch high) panel with DOTCOM compatible power connector.
FILTER MODE CHART
|Filter topology||Multimode 1 to 4 poles
Lowpass, Bandpass, Highpass, All Pass, Band Notch
|Frequency Range||22Hz - 20KHz|
|Typical Input Impedance - each input||100K Ohms|
|Typical Output Impedance||1K Ohms (short circuit protection)|
|Frequency control inputs||2 - Input 1 fixed 1V/Octave,
Input 2 with level control
|Resonance control input||1 - Input with attenuverter|
|Module Power||+15 Volts 35 mA.
-15 Volts 25 mA.
+5 Volts 100 mA.
|Module Size||Panel height - 8.75 inches (222 mm)
Panel width - 2.125 inches (54 mm)
Depth (behind panel) 2.1 inches (53 mm)
We produce electronic synthesizer modules in the two most popular formats, MU (Moog compatible 5U) and EU (Eurorack compatible 3U). A wide range of voltage controlled modules including oscillators, amplifiers, mixers, envelope generators, special effects units, wave generators, filters, power systems and cases allow users complete freedom to configure any desired electronic music instrument.
Grove Audio builds microphones, preamplifiers, equalizers, compressors and other professional audio equipment for performance and studio use. We build units in popular formats such as 19 inch rack mount and 500 series 3U modules. We can also produce custom designs on request. Contact us for a consultation.
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