Any phase cancellation isn't the fault of the PA system at all ... it is the fault of the stereo input be it an electronic keyboard or whatever and will happen the same through any monophonic system.

It's really your choice of whether you want to pay out for a stereo PA vs a monophonic one. It really isn't even a Bose PAS issue but more how well your keyboard handles being summed to mono.

I guess if your keyboard has that problem you have to decide to either always use a stereo PA or buy a keyboard that doesn't suffer from phase cancellation. You got to decide. Be aware though that using a stereo PA still really doesn't solve the problem but just hides it. Anyone standing dead center in front of the speakers in what should be the sweet spot will still experience the same phase cancellation. But as most people aren't in that listening position the problem just isn't so obvious.


Anyway my band decided to get 2 Bose PAS towers and they really are way beyond a conventional PA system. We will never go back.


[This message has been edited by Nigel (edited 01-09-2008).]