TipTop Audio CP909 TR-909 Hand Clap Eurorack Drum Module


909 Clap eurorack module. Thwack!

Functions: Drum
Height: 3U
Width: 4hp

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The CP909 by TipTop audio is a clone of the hand clap sound from Roland´s TR-909. Soundwise it´s like the original but there´s an additional Trash parameter for creating a rougher sound.

As all TipTop drum modules the CP909 can generate loud and hot levels so you can distort the sound and create additional harmonics. Full level can be reached when you crank up the Level and Accent parameters. For a clean sound keep the level maximum at 70%.

The accent circuitry is dynamic and also affects the sound. The louder the pulse at the accent inputis the louder the sound gets and in addition it has more attack.

The accent level can be set with a potentiometer. The accent input is normalized to the gate input when no cable is inserted to the accent input.

This will provide for a fat loud sound and you don´t have to worry about inserting an accent pulse. In addition the accent control will act as a fine output level control.

The CP909 clap effect is made by a special triple-saw envelope generator that controls the gain of a VCA.

The sound source feeding into the VCA is made by a quasi-random logic based noise generator; some might call it “digital noise” though this term might be misleading in today’s world of microcontrollers and sound samples. What really makes the noise generator is a ring of logic gates, so primative, so 80’s, and that’s the sound of the 909 Clap!

A trimming potentiometer on the PCB allow you for setting the balance between clap and clap reverb. the default setting is exactly the same as on an original 909.

inputs and outputs

Gate input, accent input, audio output (3,5mm sockets, mono)

3U Eurorack module, only 4HP wide

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