I ditched my hiss loaded altec computer speakers and picked up a pair of vintage Koss speakers (M85 Plus) and am powered them with a Sonic Impact amp I had purchased a while back to tinker with. It ...

I have an issue with the surrounds of my midrange. One in particular (pictured) has a small left/right tear at the noon position. Suffice it to say, at the 'right' frequency, it sounds bad. What I am ...