Designer Tim Caswell: "The 8106 is a 6db/oct hi-pass filter followed by a recreation of the Roland IR3109 module, which is a 4 pole, 24 db/oct voltage controlled lowpass filter with voltage controlled resonance. Three dual OTAs with similar topology to the BA662 used in the Jupiter 8 (and the IR3109 module) were employed, one amp for the hi-pass filter, four (with added buffers) for the low-pass, and one for the resonance. This filter takes a wide range of input signals, and tracks control voltage extremely well. Tap points are available for 6db, 12db, and 18db/oct. Although the topology is similar to the 4075, the tonality, especially when overdriven, is distinct."
Interface and feature Maestro Greg St. Regis, opted for the 6dB over the 12dB/18dB "tap" for the second filter output, due to its colourful, and starkly contrasting character.
And yes, this INPUT drive hits harder - much faster than our other filters - so there is plenty of dirt to go around, but a familiar and comforting Roland-y quality/tonality/flow is definitely home base, especially with a nice SLIM O top-dead-centre square wave is riotously coursing and pulsing through the 8106's veiny through-hole circuitry.
FREQ, RES, FREQ CV, RES CV, HPF, INPUT, OUTPUT
FULL/HALF TRACK, 6dB/24dB
1V/O, FREQ CV, 6dB OUT, RES CV, INPUT, OUTPUT
- PCB Mounting Scheme: Through-hole
- Size: 12hp
- Depth: 38mm including connectors
- Power Usage: 40mA, 35mA (+12 / -12)
|Module Type||Filter Module|
|Dimensions (mm)||60 x 50 x 128|
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