AM8325 OBIE-XA Filters

Description The AM8325 module is a recreation of the 2 and 4 pole filters in the Oberheim OB-Xa. The filter uses two AS3320 filter chips to produce an amazing sounding VCF. The 2-pole filter is a state variable, reminiscent of the Oberheim SEM, with both low pass and high pass outputs. The 4-pole filter is a classic 24dB OTA low pass.

Euro Rack Module:   14HP wide
User Manual:             Download PDF

The filter has two audio signals inputs with level control (OSC1, OSC2), frequency cutoff and resonance controls, along with two frequency modulation controls (MOD and ENV). There is also a dedicated keyboard input for controlling the filter cutoff from a pitch signal.

Front panels slide switches control whether the keyboard pitch CV is 50% or 100%, and which filter mode is provided at the output:

• 4-pole low pass
• 2-pole high pass
• 2-pole low pass

There are six 3.5mm jack sockets mounted on the bottom of the panel;

• Signal Inputs (x2)
• CV Inputs (x2)
• Keyboard Input
• Signal Output. 

The module comes with a 10-pin power cable and a set of mounting screws and washers (M3 silver).

PRODUCT STATUS: IN PRODUCTION