LWSS - Oakley Discrete Ladder Filter

If you desire that thick Moog low pass sound then the Discrete Ladder Filter by Oakley Modular Systems might fit your needs perfectly.  This module is a reworking of the classic 1960’s low pass filter module using the circuits from the 904A filter and CP3 mixer and combining them into one excellent sounding module. The module also features a drive control which allows you to heavily overdrive the filter circuit without producing a big change in output volume.

Lower West Side Studio’s 2MU version of the Discrete Ladder Filter includes a simultaneous Dry(ish) Output.  This feature provides the mixed input signals BEFORE they are processed by the filter but after passing through the mixer and Drive circuit.  The Drive control will affect the output level of the Dry Out making it more Moist than Dry.  An attenuator allows this Moist Output volume to be adjusted.

The 2MU Discrete Ladder Filter comes with 1″ (25.4mm) knobs controlling 6 potentiometers and a .75″ (19mm) knob controlling 1 potentiometer.  3 of these controls are for mixing Inputs 1, 2 & 3.  Other potentiometers control Frequency, Resonance, Drive and Depth for CV Inputs 1 & 2 as well as Dry Output level.

The 2MU Low Profile version of the Discrete Ladder filter is identical to the 2MU version but is only 5cm (1.97″) deep.  Perfect for low profile cases like the Synthesizers.com Box11

The Discrete Ladder Filter operates at +/- 15V and comes with a Synthesizers.com style power connector.