Buchla Easel V - General Questions
Do you have questions about the Buchla Easel V? You will likely find an answer here.
If you are a bit lost when designing your first patches, here are potential situations where you could be stuck with no sound output:
- No source plugged in the low pass gate input + the level Fader at 0
- A voltage source is plugged in the low pass gate input but modulation amount fader is at 0 + the level Fader at 0
- Chan A and Chan B at 0
- Sequencer ON (Right Hand) with no note actives.
The Chan A and Chan B phases are inverted, meaning that when the
Chan B source is set to Gate A, it results in duplicating the Chan A signal and reverse it's
In this situation, when both channels are opened, it will result in a partial phase cancelation of the sound output.
(The phase is not perfectly reversed so at equal volume, the sound won't be totally cancelled and can eventually create cool effects.)
This is normal, and can happens in several situations like when:
- The Low-pass/Gate Level is raised = VCA opened.
- The pulser or sequencer controls the Low pass gate and are not dependant of the keyboard trigger.
- The Right Hand Sequencer is on run.
- You change the preset.
- Click on the Panic button.
- A Stop message is received.
- Accuracy of the emulation: We meticulously recreated the rare 1973
Buchla Music Easel right down to the component level. This led to get the sound as close as
possible from the original instrument. However, this consequently requires some CPU
- Constant processing: The Buchla Easel V works in a very different way
rather than other synths emulations we've made. The synth audio engine doesn't start
when a note is pressed. It is always alive.
- Bring polyphony to a monophonic monument: The Music Easel is a monophonic
monster built with a very complex circuitry.
However, we wanted to push further the limits of this instruments, and transformed it into a polyphonic supersynth.
We made it ! But this has a huge CPU cost that not everybody will be able to afford.