UBZR1 Output Amplifier Module

Chelys Lyra

Summary/Usage

The Out module is the output stage which feeds a standard mono 1/4 inch audio jack.

Functional Description

The Out module receives its audio input from the VCF output. It contains a final amplifier with voltage controlled volume and a classical spring reverb unit to add reverb. The amount of reverb added is also voltage controllable.

Volume is meant to be controlled by the standard MIDI controller number 7. Reverb should be controlled by MIDI controller number 91.

Performance Specifications

‑ to be documented ‑

Schematics as SVG File

Out Schematics

Interface

Inputs

Audio voltage input −5 V to +5 V maximum.
Continous control voltage (−5 V to +5 V) input to control volume
Continous control voltage (−5 V to +5 V) to control amount of reverb. −5 V is "dry"

Outputs

Audio voltage output with 150 Ohms impedance, available via a standard 1/4 inch audio jack at the front panel