Incessant Whining!

Sendero · 10-09-2005, 10:22 PM

Nope not that kind...

I've developed an electrical whine that is audible in my sound system over the past year. I'm interested in eliminating this whine and getting back to my "sub-par concert quality" system.

System Specs

Sony CDX-850MP
Stock MACH 460 Amps and Speakers
Best Buy Adapter Harness

Rockford Fosgate Punch 125a Amp
JL Audio 10" 10w1 Subs
Power Wire on Drivers Side of Car
RCA Audio and Amp Signal Wire on Passenger Side
Amp Grounded to floorpan

XM Commander
connected via RCA Cable to Aux Input

Symptoms

When the car still and the volume turned all the way down, you can hear "snow" coming through the speakers.
XM Mode is considerable quiter than CD Mode
In CD mode, the subs "hit" while the CD is spinning up or tracking to the next song.
Audio quality is in the toilet
Noticeable static in certain situations

It was suggested that I run everything to a "common" ground, but how can I ground a radio system to a amp system that can only be grounded in the rear? Explain what a filter is and how it could help my situation? (ie is it electrical or audio?)

10-09-2005, 10:22 PM	#1
Sendero Im gonna show her my... Join Date: Dec 2004 Location: Somewhere providing FREE tech support. Posts: 4,269	Incessant Whining! Nope not that kind... I've developed an electrical whine that is audible in my sound system over the past year. I'm interested in eliminating this whine and getting back to my "sub-par concert quality" system. System Specs Sony CDX-850MP Stock MACH 460 Amps and Speakers Best Buy Adapter Harness Rockford Fosgate Punch 125a Amp JL Audio 10" 10w1 Subs Power Wire on Drivers Side of Car RCA Audio and Amp Signal Wire on Passenger Side Amp Grounded to floorpan XM Commander connected via RCA Cable to Aux Input Symptoms When the car still and the volume turned all the way down, you can hear "snow" coming through the speakers. XM Mode is considerable quiter than CD Mode In CD mode, the subs "hit" while the CD is spinning up or tracking to the next song. Audio quality is in the toilet Noticeable static in certain situations It was suggested that I run everything to a "common" ground, but how can I ground a radio system to a amp system that can only be grounded in the rear? Explain what a filter is and how it could help my situation? (ie is it electrical or audio?) __________________ I heard it on the internet, so it must be true. "I believe that a person's moral compass can be determined by how he references free men the right to defend themselves." T. Nugent "An armed society is a polite society. Manners are good when one may have to back up his acts with his life." R. Heinlein "Never argue with an idiot. They drag you down to their level, then beat you with experience." -Unknown