2007 AUX-in hiss and ground loop isolator solution

klevitsky · 12-05-2006, 06:13 PM

I was somewhat disappointed to hear a lot of hissing background noise through the Audio system when listening to my iPOD while it was plugged into the power outlet inside the center console. If I unplugged the charger, the hiss went away. I am sure most folks know that I am talking about ground loop feedback, but for those that don't I thought I'd share that the ground loop isolator I got yesterday from Crutchfield worked wonders and eliminated all hiss from the iPOD signal. It has an added benefit of having 3.5 mm plugs instead of RCA for easier use in this application. If you have noise, either hissing (like in my case) or a whine coming through your audio while listening to your iPOD or another audio player of choice while pugged into the car's charging system, give this isolator a shot. This has been discussed here already, especially with the XM radio units, but I thought I'd give my fellow newbies a heads up so please don't flame me for not searching, which I did, but not everyone will know what to search for (i.e. "ground loop").

PAC SNI-1/3.5 Noise Filter
Helps eliminate ground loop noise from your portable music player! (3.5mm plugs)

http://www.crutchfield.com/S-JsynoxootVC/c...amp;i=127SNI135

brick · 12-21-2006, 04:16 PM

Aha. This is what I need! I went through the trouble of routing the antenna for my SkyFi today, only to find that it sounds like absolute garbage when played through the aux input. I was afraid it was something wrong with the car, but tried my MP3 player on battery power and it sounds fantastic. With the XM I'm getting the background whine/hum, even without the HV electrics turned on. It would be much better to solve this problem with an $18 dongle than a $300-$500 XM tuner.

Thanks for posting this!

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12-05-2006, 06:13 PM	#1
klevitsky Join Date: Nov 2006 Posts: 33 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	I was somewhat disappointed to hear a lot of hissing background noise through the Audio system when listening to my iPOD while it was plugged into the power outlet inside the center console. If I unplugged the charger, the hiss went away. I am sure most folks know that I am talking about ground loop feedback, but for those that don't I thought I'd share that the ground loop isolator I got yesterday from Crutchfield worked wonders and eliminated all hiss from the iPOD signal. It has an added benefit of having 3.5 mm plugs instead of RCA for easier use in this application. If you have noise, either hissing (like in my case) or a whine coming through your audio while listening to your iPOD or another audio player of choice while pugged into the car's charging system, give this isolator a shot. This has been discussed here already, especially with the XM radio units, but I thought I'd give my fellow newbies a heads up so please don't flame me for not searching, which I did, but not everyone will know what to search for (i.e. "ground loop"). PAC SNI-1/3.5 Noise Filter Helps eliminate ground loop noise from your portable music player! (3.5mm plugs) http://www.crutchfield.com/S-JsynoxootVC/c...amp;i=127SNI135

12-21-2006, 04:16 PM	#2
brick Senior Member Join Date: Dec 2006 Location: Columbia, SC Posts: 720 My Car: 2007 Prius Package: #2 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	Aha. This is what I need! I went through the trouble of routing the antenna for my SkyFi today, only to find that it sounds like absolute garbage when played through the aux input. I was afraid it was something wrong with the car, but tried my MP3 player on battery power and it sounds fantastic. With the XM I'm getting the background whine/hum, even without the HV electrics turned on. It would be much better to solve this problem with an $18 dongle than a $300-$500 XM tuner. Thanks for posting this!