Owner Manual Manual

ADDITIONAL NOTES
This section covers a deeper perspective of the Revolution’s features and capabilities.
ACC DECAY SETTINGS
As discussed earlier in the analog controls section, the Accent Decay time control now provides both
shorter and longer decay times than the original TB303 was capable of. Please note however that
when longer than normal Accent Decay times are used, and the overdrive stage is not turned on and
the effects are set to dry, you may hear a slight click as the accent circuit turns off. This is normal.
When effects are applied to the signal this will not be noticeable. When the overdrive stage is turned
on you will not hear this either, as the overdrive stage also acts as a compressor limiting the overall
amplitude for the audio signal. However you should keep this in mind when creating those classic
acid lines.
CONNECTING OUTPUTS TO INPUTS
Some interesting sounds can occur when you start connecting the Revolution’s outputs back to its
inputs. For these purposes you may want to purchase a Y cable providing a stereo 1/4” connector to
two mono 1/4” connectors.
So here are some things to consider and try…
Plug the stereo connector of the cable into the Phones output. Plug one of the mono connector ends
half way into the Audio In jack. This allows the overall audio output of the unit to be summed with
the signal from the oscillator before it goes into the filter input. The result is more resonance in the
filter. The amount of resonance will be determined by the Resonance control as well as the Volume
control. You might also apply some amount of effect to the output channel feeding the audio input for
other unusual results. Notice if you plug the mono connector all the way into the Audio In jack, the
oscillator will no longer be heard. Instead you will only hear the oscillator self oscillating. Again,
play with adding some effects to the output channel feeding the Audio In jack. You might also
consider plugging the other unused mono 1/4” connector into the filter’s CV IN jack, so that the
output signal is allowed to modulate the filter’s cutoff frequency.
Another thing you might try is plugging the 1/4” stereo connector all the way into the filter’s Audio
In jack. The tip of this connector will feed the input of the filter. The ring of this connector will
provide a small amount of the oscillator’s waveform. Connect the mono connector wired for the tip to
the Phones output, and the ring’s mono connector to filter’s CV IN jack. Now what is happening is
the Phones output feeds the input of the filter causing it to self oscillate, while the waveform of the
oscillator can be used to modulate the filter’s cutoff frequency. Play with the CV Mod, Resonance,
Volume controls as well as selecting different effects and effect amounts to generate various tones.
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