Recently we played at a small limestone amphitheater. I set the L1's up about 7 metres apart behind us and all sounded great.
We had a friend filming us with a stereo camcorder, and when we played back the movies taken from the side they sounded good, but when we played the one taken from the middle we could hear a strange phasing sound.
It’s mainly at the very beginning of the clip.
Do we need to put the towers further apart?
Thank you for the question! It certainly appears to be a case of phase cancellation. This can and does happen in live sound all the time.
I don't believe separating the L1's out would have any beneficial effect. What you might have to do is to get a stereo mixer, and pan one of the mics a little to the left, and the other mic a little to the right. (That is assuming that you have both mics playing through both towers at the same time) You can also just plug one mic into the left L1, and the other mic just into the right L1. This would have the same desired effect.
Hope this helps!
Bose Live Music Support
I use a Behringer stereo rackmount mixer to feed both towers. We have tried hard-panning, but then one pair of singers cant hear the other side too well.
I didnt realise you could pan "a bit".
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