Fix For Audible Whine From Car Stereo

mlarma

Senior Member
May 4, 2007
54
7
0
If you're like me, you use your Fascinate as an audio source for your car stereo. I have done a LOT of research into the whine sound and know it is from the alternator and I have seen things to go inline with the audio, but this degrades sound, which I definitely did not want. So, without further delay, here is the link:

http://n4maa.us/alternator.htm

It is from a HAM radio guy and this puts an inductor (which causes frequencies only below a certain point to pass through) and a capacitor (which smooths out the electrical current in this case - many that have built speakers before know that this is a high pass filter as well - which means that in this "kit" it takes frequencies above a certain point and they go to ground if my electrical schematic reading is correct (If I'm wrong, lemme know!)).

To sum it up - this gets rid of the whine you get when trying to charge or cradle your phone in your car while it is hooked to the aux in of your stereo.

You'll have to find a way to put this inline with the electrical supply to your device (like get an extension cord for a cigarette lighter plug with male on one end, female on the other and splice this in the middle. NOTE: the red wire attaches to the wire that feeds the tip of the cigarette adapter. the clips or outside of it is the ground, which is the line the black wire goes to. That said, if you have issues, just reply to this thread.
 
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ssewk2x

Senior Member
Oct 24, 2010
1,336
1,380
0
Detroit, MI
If you're like me, you use your Fascinate as an audio source for your car stereo. I have done a LOT of research into the whine sound and know it is from the alternator and I have seen things to go inline with the audio, but this degrades sound, which I definitely did not want. So, without further delay, here is the link:

http://n4maa.us/alternator.htm

It is from a HAM radio guy and this puts an inductor (which causes frequencies only below a certain point to pass through) and a capacitor (which smooths out the electrical current in this case - many that have built speakers before know that this is a high pass filter as well - which means that in this "kit" it takes frequencies above a certain point and they go to ground if my electrical schematic reading is correct (If I'm wrong, lemme know!)).

To sum it up - this gets rid of the whine you get when trying to charge or cradle your phone in your car while it is hooked to the aux in of your stereo.

You'll have to find a way to put this inline with the electrical supply to your device (like get an extension cord for a cigarette lighter plug with male on one end, female on the other and splice this in the middle. NOTE: the red wire attaches to the wire that feeds the tip of the cigarette adapter. the clips or outside of it is the ground, which is the line the black wire goes to. That said, if you have issues, just reply to this thread.
Wowsers! That's a BIG filter - probably overkill for your phone or other music player. Not that it won't work, but you could probably experiment with smaller (cheaper, stealthier) components and still get rid of the wine. Might be interesting to build one in an Altoids box or something, maybe ...

For reference, my 100-watt ham radio draws slightly less than 20A when transmitting at full power. :D
 

JeezyMT3G

Senior Member
Aug 21, 2010
324
14
0
Phoenix
I heard the whine sound comes from the wires current (the Power and RCA cables) running side by side ...I got rid of it just by running power on left side of car (cuz my batt is located in front left) to the amp then RCA on right side ...got rid of it and haven't heard it since...


2 Kicker CVRs 12'
Monoblock 750.1 Kicker amp
Custom sealed box tuned
Sony deck
Yellow Cap batt
5 Ferad Massive cap

Sent from my GB MIUI Fascinate