Okay, I think as Codamedia says the best thing is to take the Helix to a store, try a Yamaha DXR12 or QSC K10.2, and hear the result. A question for DunedinDragon: but do you have a pair of speakers for each brand or do you have two speakers, one Yamaha and one QSC? And by the way, thanks for the suggestions guys....