The amp powers 6 speakers; the sound used to be OK. A couple of weeks ago I started noticing the weak sound in the front; checked the fader - the settings are normal. I tried to adjust the "Gain" control on the amp - everything is perfect but there's this terrible whining noise - not exactly the alt whining 'cause I tried to increase the RPMs - no effect on whining. When I put the gain on zero again - the noise is gone but the sound is sucky, it feels that the sound is coming from the rear of the car only.
Any ideas?
Thanks.
