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#4593655 - 12/04/17 05:15 AM Speaker interference with iPhone/ aux. cable
dlundblad Offline


Registered: 09/30/13
Posts: 10063
Loc: Indiana
I bought a cheap $40 radio for my truck since the factory radio was on it's last leg. No iPhone control. Just a auxiliary and USB port.

For whatever reason, whenever I use the 3.5mm to 3.5mm adapter, I always get some sort of static/ clicky interference in the speakers. I imagine it's my phone emitting some sort of signal. I've used different cables with the same results. Makes listening to it pointless most of the time so honestly I've given up for now. FWIW, it works fine in say a 2016 model vehicle with an auxiliary port built into the factory system.

What could be causing this? I am not too "car audio" savvy. I have a nice Kenwood in my Jeep that was a (at it's time: 2010) flagship model with iPhone controls. No issues whatsoever even with my newer iPhone 6S.
_________________________
03 Jeep WJ 4.0 199k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 177k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 145k Rotella T5 10w30 Fram TG3980


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#4593659 - 12/04/17 05:28 AM Re: Speaker interference with iPhone/ aux. cable [Re: dlundblad]
rooflessVW Online   content


Registered: 12/24/11
Posts: 4102
Loc: North Carolina
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"Zed's dead baby, Zed's dead."

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#4593700 - 12/04/17 06:50 AM Re: Speaker interference with iPhone/ aux. cable [Re: dlundblad]
danez_yoda Offline


Registered: 07/18/09
Posts: 471
Loc: texas
Unplug the phone from the charger, that should get rid of the ground loop.

If not that cheap radio may have a faulty aux jack. I have repaired a few with broken solder joints to tye pc board. Have you trsted it with a walkman or other? And wiggled the connection.

If not it might be phone radio interference getting into the audio front end and overloading it. In that case you might get a ferrite ring core from radioshack and coil you cable through it few times to kill the high frequency fuzz.

Most audio inputs have input. Filter capacitors on them for this. At $40 pricepoint they might not bother.

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#4593780 - 12/04/17 09:20 AM Re: Speaker interference with iPhone/ aux. cable [Re: dlundblad]
JHZR2 Offline



Registered: 12/14/02
Posts: 41805
Loc: New Jersey
Get a Bluetooth to aux in adapter.

You may lose a bit of sound quality, but you won't necessarily notice it. Very convenient.

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#4594123 - 12/04/17 03:18 PM Re: Speaker interference with iPhone/ aux. cable [Re: dlundblad]
dlundblad Offline


Registered: 09/30/13
Posts: 10063
Loc: Indiana
Should have mentioned the noise happens without being plugged in the charger.
_________________________
03 Jeep WJ 4.0 199k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 177k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 145k Rotella T5 10w30 Fram TG3980


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#4594960 - 12/05/17 12:51 PM Re: Speaker interference with iPhone/ aux. cable [Re: dlundblad]
javacontour Offline


Registered: 06/26/03
Posts: 10306
Loc: Illinois
Is the charger still plugged in? Some of them are quite noisy electrically. Get rid of all the chargers and see if the noise continues.
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#4594989 - 12/05/17 01:15 PM Re: Speaker interference with iPhone/ aux. cable [Re: dlundblad]
StevieC Offline


Registered: 08/21/08
Posts: 17116
Loc: Ontario, Canada
Make sure the cable doesn't run anywhere near the back or front of the phone. It's most likely the phones transceiver that is creating the noise.

Does it sound like this?

_________________________
'15 Dodge Journey - 90,000 KM's - SSO 5w20
'06 Hyundai Santa Fe - 535,000km - SSO 0w30 (R.I.P)

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