I figured it out. After relocating ground to a different location andnsanding down the metal it had no effect on the hiss and whine. I noticed the gain on my amp was at 3/4 max. I turned the gain down all the way to zero and everythimg is now whisper quiet. No more hiss or whine.
Ofcourse I have to turn up the volume higher now to get "loud" but on the Pioneer 4600 the volume seems like it goes on forever. With the gain all the down at a certain volume I would notice distortion but it was way beyond anybodies listening threshold. I wonder why anyone would even need to turn up the gain? Should I turn it up a little bit? Sound quality doesnt seem effected.
|