yes klipsh told me that i called because i thought i had blown the right speakers horn it sounded distorted at high levels and cut out he recommended more power at least 300 watts distortion occurs at the top end of the volume so its best to have some in reserve something like that and i cant change the impedance 8ohms only i'm pretty sure. they're bi-amped one internal amp for each channel i think if i use only one amp put the binders back in don't get me wrong they crank out some sound but the house 6 doors away can't hear them very good and i don't think they should cut off