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Post subject: Passport venue & Boss RC-30 using all channels
Posted: Wed Jan 31, 2018 8:17 pm
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Hobbyist
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Joined: Wed Jan 31, 2018 8:06 pm
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I recently bought a passport venue as well as a boss RC-30. I don't have any issues connecting the RC-30 to a single channel. However, I was wanting to use multiple instruments and was wondering if there's any way to to hook up the RC-30 to the venue so I can use each channel of the mixer looping several instruments at once. Not sure if this is possible, but if it is, can someone please let me know how this is done. Thank you !!


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Post subject: Re: Passport venue & Boss RC-30 using all channels
Posted: Mon Feb 05, 2018 9:05 am
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Aspiring Musician
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Joined: Wed Feb 16, 2011 7:24 am
Posts: 434
In the world of sound equipment, there's the way things are designed to be used, and then there are odd things you can do to work around the design. The odder the thing is you are trying to do, the more compromises you have to go through to do these things, and sometimes, it just doesn't work at all.

The Boss RC-30 is designed to be used with one mono or stereo input and it has one mono or stereo output. The Passport has one stereo output.

By design, you plug your instrument of choice into the Boss, and plug the Boss into the Passport. That one instrument can be looped. Everything else is live and out of the loop.

You could plug everything into the Passport, then use the stereo output of the Passport as your input to the Boss RC-30, but then you have a rather large problem: Where do you plug the Boss's output in order to get the signal to your speakers? Hmm. It has to go back into the Passport, into one of the input channels... which is being fed back into the Boss RC-30. You now have a feedback loop. This is probably undesirable.

Now, EVERYTHING is being looped, plus you'll probably get howling feedback because the Boss passes the signal through, live, while it is recording and later mixing together the playback of the loop into the live sound going through its output ports.

So, when your live mic picks up any sound at all, and that goes through the Passport and split between going out the speakers and going back to the Boss RC-30, which passes the signal back to the Passport, which amplifies it and splits it to go out the speakers and back to the Boss RC-30, eventually the sound coming out the speaker will be loud enough that the mic will pick it up. That's when the howling feedback happens. It might take as long as three seconds, but I doubt it.

If you want to loop more than one instrument, you probably need a different looper that is designed to handle multiple loops of multiple instruments. You might be able to use multiple Boss RC-30s, but they'd need to be somehow synchronized so the loops don't get out of phase with each other. I'm not familiar enough with the unit to know if synchronization of multiple units is part of its design. Perhaps it is.

Anyway, no, don't try to plug the Passport into the Boss and then plug the Boss back into the Passport. That's definitely a bad idea.


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