If your amp is clipping the bass will become mushy and the mids and highs will sound hard. It's very easy to clip a small 100wpc amp. Where the volume control is means nothing as this can vary alot but I'm not going into why here. Suffice it to say you are probably clipping your amp. I'd turn it down to where it sounds good and leave it there before you blow your tweeters.
CD Help
I'm having trouble with listening to my cd's at a reasonable vol. all of a sudden when i crank it up to about 11 o'clock everything just turns to MUSH! complete distortion, i don't have a dedicated cd player, i am using a cheap $200 sony dvd sacd etc which i bought at circuit city. Yes circuit city. I know, lets keep the comments to my problem. whcih that may be one. Anyway, i have a set of mirage OM-10's (4) for Ht use and a set of the Von Schweikert VR4 jr's that i use for 2 channel. Both speaker sets when i switch a-b are sounding distorted. Why the breakdown in sound. Damn this gets me. It really sounds like crap. HELP