The TipTop Buchla Quad Lopass Gate Model 292t is a synthesizer module that features four separate voltage-controlled amplifiers (VCAs). Each VCA has a signal input and output, a control voltage input to alter the gain, and an offset adjustment for fine-tuning. There is also a switch to choose from three different operating modes: VCA mode for pure amplification, VCF mode for lowpass filtering, or a combination mode where the frequency response changes with gain adjustments.
In summary, the functions of this synthesizer module include:
Voltage-controlled amplification: Each of the four VCAs can amplify or attenuate an input signal based on the control voltage. Lowpass filtering: In VCF mode, the module acts as a lowpass filter, removing high-frequency content from the input signal. Combined operation: The module can simultaneously perform amplification and lowpass filtering, with the filter's response changing as the gain is adjusted.