The module has two audio inputs, each with a level control. "unity gain" is reached at position 4, beyond this the signel will be overdriven at the filter input.
The cutoff frequency can be set manually in a range of 30Hz to over 15kHz, with additional CVs even up to 50kHz. Separate audio outputs fr the four filter types are available: 24dB low pass, 24dB high pass, 12dB band pass and 12dB notch.
Resonance goes up to self-oscillation and besides that it offer an unique feature: the socket Res-Out and Res-In act like an insert i.e. they allow you to process the audio signal in the feedback loop by other audio processors like filters, distortions, delays, frequency shifters etc.
You get very wicked results when you connect the notch output with the resonance input. It sounds very metallic and the filter behavoiur gets more aggressive. Generally it is fun to cross-onnect the separate outputs with the CV and audio inputs and to use the filter in a modular way.
Usage with Eurorack:
Analogue Systems' modules are designed solely for use in cases and cabinets made by Analogue Systems. Through the use of adaptors or adaptor cables, however, it is possible to connect them to Eurorack cases.
Should you chose to use an Analogue Systems module in an Eurorack case, please note that the warranties are thus void and the use occurs at your own risk! If the module is plugged in incorrectly and therefore damaged the customer has to bear any costs for repair and shipping!
Because of the different position of the mounting holes there will be a gap of 0.5HP (= 2.5 mm) when mounting an Analogue Systems module next to a Eurorack module. Take this into consideration when planning your system. Gaps can be covered with 1.5HP wide blank panels by Doepfer.
cutoff frequency CV inputs: 1V/oct and Vary
Audio: 2x signal input. Outputs for low pass, high pass, band pass and notch
resonance loop: input and output
3U module in Analogue Systems form factor, 18HP wide, 65mm deep
power consumption: 45mA typical, 70mA when powering up