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Old 8th October 2004, 03:37 PM   #1
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Default MP3 Auxiliary input

I've seen on some newer car stereo head units that they have an input for an MP3 player. I was wondering if I could do that, and I've found one that would go through my stock stereo via the 5 cd changer socket but it's $60 and I've found FM modulators that connect directly to the line. How would the modulator sound, i'am a little skeptic, but since it's directly connected i don't know. THanks for any comments.
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Old 8th October 2004, 09:57 PM   #2
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FM modulators have the limitations of hte FM tuner. If you look at the frequency response and S/N ratio of your FM tuner, you'll find that it's relatively poor. This is the BEST performance that you can get from your MP3 player, then.

Input through the CD changer port works fine, and is generally recommended.

If you want to do it yourself, it will vary. You have a few problems to overcome.

1. You need a way to turn on the stereo, and select your aux port.

2. You need to be able to apply volume, balance and fader controls to your input.

3. Presumably you still want regular function of your stereo.

I've never found a way to have all three.

The closest that I've found is with my old OEM unit, I added a set of pre-ins (A search of this forum should result in details, BTW.)

What I did was to disconnect the AM stereo decoder chip. This is after the AM tuner function, so it does not suffer the degradation of the AM tuner. The radio would then be set to "AM" for the aux port to function. This means that there's no AM radio in the car, but I decided that for the time being, I could live with that.

It worked nicely. While I was at it, I wired pre-outs at the amplifier stage input.
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Old 22nd August 2005, 05:57 PM   #3
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Default I-Pod in help.

SupraGuy, I know this is an old post but I am new here and in need of your help. I am doing the same and need instructions if you would Polo30@Ameritech.net . Also is it possible to use the CD function as same, with all my music on my Photo 60 there is no need for me to burn CDs anymore. Thanks in advance for any help... Polo.
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Old 22nd September 2005, 09:14 PM   #4
auxbs is offline auxbs  United States
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There's some projects on the 'net for adapting CD changer interfaces.

GNUnilink for Sony Head Units

VWCDPIC for Volkswagens (even has iPod remote control!)

Anyone know of any other projects?
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