I am gettign a hissing from my speakers at all audio levels. I have a 05 max. I hooked up a audiobahn amp for the highs and RF for the subs. I have to turn my LOC gains all the way up to get a good bass hit. It's still not where I want it but good for now. Anyone with a 6th gen with stock NON bose deck get this hissing? If so how did you fix it. I disconnected the rca's from the amp and the sound (hiss) goes away. So I assume it's not the grounding of the amps. I can get the hissing to stop but have to have the LOC gains almost off wich kills my output. Any help would be appreciated.!!

Update. I was thinking if I added a line driver to boost the output from the HU then turned the gains down on the LOC, would bring my hiss down or maybe even gone. Any idea's?

 

check your grounds

 

i just redid my ground connection today, to to an autoparts store and get a packet of Dielectric grease and some liquid electrical tape.... disconnect your ground, sand/re-sand off all paint and rust, attach the ground loosly, squeeze the dielectric grease all under your ring term and bolt, tighten your ground, spread the excess grease over the top of the bolt, lastly poor a layer of liquid electric tape over the connection to seal it off

 

Ok so your saying my AMP grounds are the issue? Another question for you 6 gen people. The seat back seems to have a plastic backing on them. I have to have one side of my seat down to get some good bass. My 10's are still not hitting as hard as I like them too. I dont know what the hell is wrong with it The subs are not out of phase and the gain on the amp is damn near all the way up. I know my rear seat backing has something to do with it. I was thinking to remove the rear deck speakers to allow some opening for the bass to come through. Any ideas are welcome.