I have been fighting this issue for a long time now. Had a JL 500/5 go bad on me, which I attribute to also killing my PXA-H701... long story there.

ANYWAY, I know have an ARC ks900.6. I am currently getting a popping noise through the passenger side rear speaker on start-up, then alternator whine coming through the front channels.

After spending a while on the phone with ARC's tech support, the guy said he had an F150 and with the quiet metal, it doesn't provide a good ground and he recommended grounding to the frame.

My question is, before I go through the work of doing all of this, is this a possibility or anyone else experience this?

current setup is W200 --> ks900.6 ---> MB Quart QSD 216's (front) ---) MB Quart Discuss (rear) ---> JL Audio stealthbox (sub)

 

if the noise is just from the front speakers, then it could be a problem with the RCA's. make sure they are grounded.
try switching the front and rears and see what happens

 

I grounded my amps to the frame and I'd say it's about the easiest thing you can do.

 

I am getting ready to do my audio install in my 2008 F150. Could you tell us where and how you did the ground to frame in your truck?

Thanks,

 

get a ground distribution block and run your grounds from you amps to that. Then use a fat 0/1 cable run from the block through the rear cab vents down the the frame with a terminal lug on the end. I used the gold plated crimp type and found a bolt that was right there on the frame that would hold the terminal. So I sanded that spot up and made the connections. Make the connection short as possible and it should be fine.

 

I grounded my amps to a chassy bolt right behind the seat bracket and i have zero whine or popping.

 

See, mine's on a chassis bolt behind the rear seat also.

 

Did you clean the ground area? i sanded and really scraped/cleaned the area on/surrounding my ground bolt to make sure i got solid current flow.

Keep in mind, i have 3 amps now, and w/ the big 4 upgrade and deep cycle battery, still zero problems.