amp not accepting my input

[quad4x]

I have a KENWOOD KAC-9152D that has both speaker level and rca inputs

I tapped my back speakers and tried using the speaker level inputs. It didn't work. I hooked up a portable cd player to some RCA's and plugged them in and the sub fired and worked so I thought the speaker level inputs were not working.

I went and got a line out converter, still using the taps to the rear speakers, I hooked up some RCAs and it worked for while.

Then the sound cut out. I thought the LOC was bad, but hooking up the RCA output to some headphones, I got sound. So I know the LOC is working and sound is coming out. So it seems like the amp isn't taking in any of my sound.

I'm not sure where to go from here.

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[squeak9798 5,000+ posts]

Not much more to say. Sounds like you pretty much narrowed it down to the amp being the problem, having a bad preamp input stage. If it's under warranty, take it back and have them fix it.