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I'm looking at ways to fatten the sound of the combo I play with. But the band plays to tight tempos in strict 32 bar choruses.

Is there any way to sync the Roland Boss RC 300 Loop Station to external rhythm sources such as a live drummer or an external drum machine?

The RC 300 has MIDI master but not MIDI slave capabilities. And it's rhythm tracks are awful.

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I found some info on syncing to external rhythm sources that I'm going to have to try. Don't down-vote, please, this isn't an answer, I'm using comments to bookmark the link. – empty Jul 12 '14 at 0:27
up vote 0 down vote accepted

Okay, I now know how to do this, although it will take me some time to implement.

This case is for having an acoustic drummer set the tempo on the RC 300.

First, get an piezoelectric acoustic drum trigger and mount it on the snare rim.

Second, hook the drum trigger up to a midi percussion module with a midi out that has configurable midi messages.

Third, edit the outgoing midi message from the percussion module to be CC#64 with a value of 127.

Third, On the RC-300, go into Memory Edit | Assign Controllers. Find an unassigned controller, like 8. Set it to ON, Target to MEM Tempo (tap), and Source to CC#64.

First caveat: Don't use this to trigger the Rhythm Track or it will restart on every beat.

Second caveat: The drummer will need a way to turn off the trigger when he's not hitting every (other) beat on the snare.

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