’ Offset Offset Input Input Output Output Env in Env in Mod1 Mod1 Mod2 Mod2 Audio in Audio in Output Output Components Assembled V’Amp module DC power cable – 9” Ribbon cable (Doepfer standard) M3x0.5x5mm Stainless-Steel machine screws M3 Nylon washers Specifications 8 h.p.
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What is it? The V’Amp is a combined voltage-controlled amplifier (VCA) and ring modulator (A.K.A. ring “mod”), with a little bit extra. The effect of a VCA is known as amplitude modulation (AM), while a ring mod is a frequency mixer, an effect known as heterodyning.
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Controls Mod1: This is the magic knob, controlling the frequency mixing as described in the introduction. Mod1 varies the amount that the Mod1 signal modulates the input signal, as well as controlling the polarity of the output: positive from 7:00 to 12:00, negative from 12:00 to 5:00.
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Other connections Power: The power connector header is a 2x5 shrouded box header which accepts the standard Doepfer power cable. This header style is polarized, meaning the connector can only be inserted one way, to prevent connecting the power backwards and damaging the unit.
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HDR2, top to bottom: Mod1P2 Mod1 potentiometer wiper Mod1In Mod1 Jack signal Mod1P3 Mod1 potentiometer terminal 3 (fully CW) Mod1P1 Mod1 potentiometer terminal 1 (fully CCW) Common ground AudioIn Audio input jack signal EnvIn Envelope input jack signal HDR1, top to bottom: Mod2P2 Mod2 potentiometer wiper OffsetP2...
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Stuff There is a lot of discussion about the V’Amp on the Muffwiggler forums, come check it out! People have posted some excellent demos on there. I haunt the forums as well, and new things are posted there long before they hit the f(h) website.
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