Stereo & Electronics - Amp plays bass but no treble!!!!!

I have a 4 channel amp that powers my components. It turns on. When I crank it up you can hear the bass but not the treble(no singing, guitar, etc.). It's got me baffled. Is the amp blown? Thoughts?

Sounds like your x-over is set wrong.
Set it to High pass ,if you are running a sub, or to full range if there's no sub in your system.

So I turned the X-over off and the back two speakers started up. The front 2 door speakers still don't. Any ideas.

A 4-channel amp will have 2 independant xovers for the front and rear. CHeck to make sure the other high pass crossover is also set at full range.

FIXED. Thanks