The Stereo One-O-Six Chorus is a gear creating a stereo chorus from a mono signal. Its circuitry and behavior is highly inspired by the Roland Juno 106 by using two BBD delay chipsets with a variable delay driven by BBD clocks, those clocks being modulated by an analogue LFO triangle modulator. Additional features allow to use an external clock modulation source and to mute the direct signal in order to retain only the variable delayed effect.
The One-O-Six Chorus can be connected as an insert between your synthesizer and your mixer. In this case, the dry/wet ratio is fixed as in the Roland Juno 106 (55% dry – 45% wet) :
Or the One-O-Six can be used as a stereo external effect in your mixer by using an auxiliary pre or post fader. In that case activate the DIRECT MUTE function and adjust the dry/wet balance to your flavor with your mixer :
The One-O-Six controls are the following :
1 – POWER INDICATOR : the power is provided by an adapter with 2.1mm barrel, center negative, as used in many guitar stomp boxes. There is no power switch.
2 – MONO INPUT : insert a mono TS 1/4″ jack coming from your synthesizer or mixer (asymmetrical line level).
3 – OUTPUTS LEFT/RIGHT : insert two mono TS 1/4″ jacks. If nothing is plugged on RIGHT, left and right signals are summed to mono on left output channel as in the Roland Juno 106 (asymmetrical line level).
4 – INPUT LEVEL GAIN : set the global input level of the unit. Turn clockwise to increase gain. The meter indicates the level. The dot indicates a nominal gain.
5 – MODULATOR : is an internal triangle LFO with a range of 0 – 1.8 Hz. A LED indicates the heartbeat of the Modulator signal (internal or external).
6 – RATE : set the rate of the internal LFO modulator. Range : 0 – 1.8 Hz. Turning clockwise increases the rate. The dot at 12 o’clock corresponds to the Juno 106 chorus preset I, while the dot at 2 o’clock corresponds to the Juno 106 chorus preset II.
7 – DEPTH : set the level of the internal LFO modulator. Range 0 – 20 V peak-to-peak. Turning clockwise increases the depth. The dot at 2 o’clock corresponds to the Juno 106 chorus depth level.
8 – EXT. : a TS 1/8″ Mono jack input to insert an external modulation source and thus bypassing the internal LFO. Ideally you have a signal of 10 to 15 V peak-to-peak. This input is buffered. The DEPTH control is still available with an external signal plugged in.
9 – DIRECT MUTE : to mute the direct signal and only having the delayed signal. Direct mute is active if button is pressed (LED is lit).
10 – EFFECT ON/OFF : to activate the chorus. Chorus is active if button is pressed (LED is lit).