Hi everyone, I was wondering if anyone has any bright ideas to help... I have recently changed my audio setup. I formerly had a cambridge audio a4 amp biwired to a pair of floorstanding Mordaunt Short M25i's. The sound from these, regardless of input, was great. It was engaging and full, with not too much treble and just the right amount of bass. I have changed this (due to changing family circumstances) amp and now have an Onkyo TXSR 576 (7.1 AV receiver). I have "bi-amped" (following the manufacturers instructions, and I am aware of the minefield surrounding the debate between whether it's bi-amped or bi-wired and don't want to get bogged down in semantics.....) these speakers and suddenly, when playing stereo music, the sound is really quite poor. I have the rest of the av receiver connected to a tannoy sub and surround speakers, so it's a 5.1 system with the front speakers bi-amped into the front and surround back channels. Why, when listening to music without the sub, is the sound so weak? It's really treble-heavy, even after I've fiddled with the levels...I like my music and want to rely on the floorstanders for it, and not to use the sub to fill it out. Any help would be so helpful! Thanks everyone.