Hissing sound from Back right Speaker
 

Recap of system.
THere is a hissing sound from one of my back speakers. Is this a bad speaker?

JL Audio TR600-CXi -Front Speakers
JL Audio TR690-TXi -Back speakers

Head Unit Alpine W-N910

any amplifiers? if so turn down the amp gains and maximize you w-n910 preamp.

turn down the treble if that's used.

No AAmp yet.

Quick update: I added a new amp by pioneer pf9000 and replaced speaker wires. Hissing is gone, but amp sounds horrible compared to alpine alone.

On my CDA-9807 I used the internal amp with no power amp. Once you get one I believe the manual instructs you to turn off the internal amp to gain better sound quality for pure signal processing.