* 24 dB-Lowpass-Filter with Feedback
* adjustable Key-CV via system-bus
* two CV-inputs for filter cutoff
* CV-input for filter emphasis/resonance
* MSRP: 99,- Euro


The VCF-SED (Voltage Controlled Filter) module is a lowpass-filter as a single ended discrete (transistors) filter that can be driven into clippng zone,

The filter module has two audio inputs with input 1 offering variable attenuation. When not patched the filter output is fed back into this input. By this, it is easy to recreate the legendary feedback-trick that leads to additional pushing bass. Input 2 has a fixed input sensitivity that matches the Mix output of MFB's oscillator module OSC-03.

Filter cutoff can be controlled manually as well as from CV-sources. CV-1 is adjustable in intensity and intended to be used with an envelope generator. CV 2 has two functions: It accesses the internal Key-CV-voltage provided by the system-bus (when fed by a MIDI/CV-interface). This allows for easy key-tracking for the cutoff-frequency. Tracking-intensity can be adjusted by a trim-potentiometer. An additional front-panel-input allows adding a further CV-source (e.g. LFO) that uses the same potentiometer. To use this input independently, the system-bus-access can be disabled by setting a jumper on the circuit board.

Filter resonance, called emphasis, can also be adjusted manually and by an adjustable CV-input.

The module has a width of 40 mm (8 TE).

Within the EU, the VCF-SED is available for EU 99 Euro including shipping. (Prepayment by bank transfer). Non-EU-Residents countries can order the VCF-SED for 90 Euro (Price does not include VAT) – Prepayment by PayPal. This price includes shipping. Please send your order to m.f.b@t-online.de. We will return our bank details or our PayPal account respectively.