Radio Nightmare - The 1947 - Present Chevrolet & GMC Truck Message Board Network

d10s69c10 · 03-20-2010, 02:56 PM

alright i have been working on my buddies 05 f150 for a total of 9 hours now the last 7 have been trying to figure this noise out..

first off right off the bat its a panasonic double din head unit worked great when it powered the speakers. he wanted to run mids and highs through a amp and a subwoofer on a seperate amp. no problem...

install new RF speakers ran new RF wire to every one ran RF RCA's on passenger side Ran power wire and remote on drivers side.. grounds are all triple checked..

hooked it all up and i have a "whine" with the truck off figured it was amp gain.. turned it all the way down still barely there.. start the truck up i get alternator whine added to it..

i have pulled my truck up and ran my rca's to his speeakers sounds AMAZING. ran his rcas to my truck still sounds pretty good...

even the dome light turning on and off is making noise.

so now what get a noise suppresor or just run the new speakers thru the head unit my brains fried!?!?!?

yellow70GMC · 03-20-2010, 03:38 PM

put a ground loop isolator inline in both sets of rcas going from the head unit to the amps. or an old trick is to just ground the shield of the rcas.

**michael bustamante** · 03-22-2010, 06:00 PM

yup ground the rca`s, monster cable has a seperate wire on e some of their rca cables to ground to the amp

d10s69c10 · 11-28-2010, 10:04 PM

old post i know but turned out it was the headunit the whole time it fried 2 weeks later we replaced it and now its perfection.

03-20-2010, 02:56 PM	#1
d10s69c10 Built 4 Speed Join Date: May 2008 Location: Geneva FL Posts: 619	Radio Nightmare alright i have been working on my buddies 05 f150 for a total of 9 hours now the last 7 have been trying to figure this noise out.. first off right off the bat its a panasonic double din head unit worked great when it powered the speakers. he wanted to run mids and highs through a amp and a subwoofer on a seperate amp. no problem... install new RF speakers ran new RF wire to every one ran RF RCA's on passenger side Ran power wire and remote on drivers side.. grounds are all triple checked.. hooked it all up and i have a "whine" with the truck off figured it was amp gain.. turned it all the way down still barely there.. start the truck up i get alternator whine added to it.. i have pulled my truck up and ran my rca's to his speeakers sounds AMAZING. ran his rcas to my truck still sounds pretty good... even the dome light turning on and off is making noise. so now what get a noise suppresor or just run the new speakers thru the head unit my brains fried!?!?!? __________________ 1969 C/10 Short Box: 496/T-56 in worx. "To Be Old And Wise, First You Must Be Young And Stupid"

03-20-2010, 03:38 PM	#2
yellow70GMC Registered User Join Date: Sep 2005 Location: Reno, NV Posts: 161	Re: Radio F'n Nightmare put a ground loop isolator inline in both sets of rcas going from the head unit to the amps. or an old trick is to just ground the shield of the rcas. __________________ 1970 GMC 4x4 swb fleetside custom 4 inch lift with rear shackle flip, mild sbc, tci trans, rebuilt np205 w/twin shifters Last edited by yellow70GMC; 03-20-2010 at 03:39 PM.

03-22-2010, 06:00 PM	#3
michael bustamante Senior Member Join Date: Sep 2007 Location: Albuquerque NM Posts: 7,862	Re: Radio Nightmare yup ground the rca`s, monster cable has a seperate wire on e some of their rca cables to ground to the amp __________________ 1967custom

11-28-2010, 10:04 PM	#4
d10s69c10 Built 4 Speed Join Date: May 2008 Location: Geneva FL Posts: 619	Re: Radio Nightmare old post i know but turned out it was the headunit the whole time it fried 2 weeks later we replaced it and now its perfection. __________________ 1969 C/10 Short Box: 496/T-56 in worx. "To Be Old And Wise, First You Must Be Young And Stupid"



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