FM Frequency Noise
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=87416
Printed Date: April 25, 2024 at 6:36 PM
Topic: FM Frequency Noise
Posted By: Velocity Motors
Subject: FM Frequency Noise
Date Posted: December 18, 2006 at 3:21 PM
Had a customer with a 1993 Jeep XJ and we installed a set of 12" cooling fans for his radiator, Pioneer CD Player, 4 channel amp & mono amplifier. The problem is when he uses the FM radio, there's an alternator buzz in the speakers. THis only happens on the FM band. The AM radio & the CD player play perfectly fine without the noise. Any ideas ?
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Replies:
Posted By: fox55
Date Posted: December 18, 2006 at 5:11 PM
Have you tried swapping the radio yet? Does the same problem exist with the factory stereo installed? How is the ground on the antenna doing?
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MECP Certified
Fry's Electronics MEI - Anaheim, Ca
"Kneel Before Zod"
Posted By: Velocity Motors
Date Posted: December 18, 2006 at 5:47 PM
Haven't tried replacing the CD player yet and haven't looked at the antenna either. We will be looking at it tonight but thought I would get some options before I go into this. Thanks for the reply and I'll see later on tonight what it might be.
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: rudydapimp
Date Posted: December 18, 2006 at 10:22 PM
this would be mu suggestion. although i have had problems witht he factory ground in Jeeps.
Posted By: dudek38
Date Posted: December 23, 2006 at 10:46 PM
ive seen this problem with f150's. i believe the problem was a ground issue. i used a ground loop isolater from pac
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owner of
Motion Marine & Car Audio
the florida keys
Posted By: sin0cide
Date Posted: December 24, 2006 at 10:17 PM
I wonder if the fm section of the board is grounded like rca shields are. or maybe its grounded threw the ant wire
Posted By: dudek38
Date Posted: December 25, 2006 at 12:01 PM
mmm, definitely could be an isolated problem with the fm section. im never surprised by failed electronics.
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owner of
Motion Marine & Car Audio
the florida keys
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