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MUTABLE INSTRUMENTS RIPPLES Multi-mode VCF/VCO with VCA
PLEASE NOTE THIS IS AN ORIGINAL MUTABLE INSTRUMENTS PRODUCT, NOT A DIY CLONE!
Much loved and versatile multi-mode liquid filter with built in VCA. Great Condition, rarely used since new.
Only selling as Ive got lots of VCF options and Ive run out of space!
In original box with power cable and m3 nuts
(photos of the module in it’s box are to come once i’ve found the box in the loft!)
Everything I sell is packed very well and posted insured, tracked and signed for.
Liquid filter
3 filter modes are available: 2-pole band-pass, 2-pole low-pass, and 4-pole low-pass.
Self-oscillation is available for all modes and produces a clean sine-wave on the LP4 output. Unlike many classic 4-pole designs, this filter does not suffer from loudness drop when resonance is increased. The resonance loudness compensation circuit brings a slight tone coloration reminiscent of the Roland SH/Jupiter filters, with a very round and liquid resonance.
The 4-pole low-pass output is additionally sent to a VCA. This makes Ripples a good final stage module for an inexpensive/space-constrained subtractive synthesis synth voice.
Controls
Cutoff frequency, 18Hz to 18kHz
Resonance (self oscillation at 80%)
Attenuverter on Frequency CV
Inputs and outputs
Signal in
Frequency CV 1 (1V/Oct)
Resonance CV. Self oscillation starts at 4V. Control voltages above 5V are non-linearly compressed, for fine control of resonance overdrive
Frequency CV 2 (with bipolar attenuator, from -1V/Oct to 1V/Oct)
VCA level. Control voltages above 5V are non-linearly compressed.
2-pole BP output
2-pole LP output
4-pole LP output
4-pole LP output attenuated by VCA
Technical characteristics
Fully analog, based on SSM2164 low noise/distortion quad VCA chip, and LM13700 OTA for that extra bit of non-linearity.
Frequency CV inputs impedance: 100k.
Audio input impedance: 75k.
Resonance and VCA CV input impedance: 30k.
Open-source hardware.
http://mutable-instruments.net/modules/ripples
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Category: Musical Instruments:Pro Audio Equipment:Synthesisers and Sound Modules
Location: St. Leonards-on-Sea