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Old 15th August 2012, 11:42 PM   #1
JZatopa is offline JZatopa  United States
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Join Date: May 2003
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Default Wtd: Car stereo modifier

I am curious if anyone can help me with a mod that is a bit out of my skill level. I would like one or two Sony head units modified to provide SPDIF output. I have tried and to be honest I don't know what to look for, where to look for it or what it would look like on my o-scope if I found it. If you can help me please let me know. I am willing to pay for this but I would also be willing to give you some car audio gear as payment as well.
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Old 16th August 2012, 05:28 AM   #2
EBBCO is offline EBBCO  United States
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There is several units available with this feature, Sony makes 2. Alpine, I think eclipse, and now there's an over the counter converter as well.

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Old 16th August 2012, 03:28 PM   #3
JZatopa is offline JZatopa  United States
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There are old units available but currently Sony does not make a unit with digital audio out and eclipse has been out of business for about 4 years now. Alpine may make a current unit with spdif but I am not aware of what model that maybe.

I have specific reasons I want to have the Sony radios I have modified. They have features that cannot be found anywhere else. there are old tutorials on how to add spdif to some outdated Alpine head units but unfortunately they didn't help me when I opened up my units and started poking around. If there is a tutorial on how to find a spdif or i2s signal in a mixed signal device that has pics of what the o-scope traces should look like, that would help me immensely. I do think that I may need some sort of logic probe to do this properly and I don't have one nor do I know how to use one.
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Old 6th September 2012, 12:30 AM   #4
JZatopa is offline JZatopa  United States
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Old 6th September 2012, 06:41 PM   #5
winslow is offline winslow  United States
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There are a couple threads on DIY Mobile Audio about adding toslink outputs to a couple of decks.

Find out which DAC you have in the deck, look at the data sheet for it, find the pin that says DOUT, tag it with a small wire, do your correct impedance terminations, add a little digital pulse transformer, and you are basically done.

Maybe the transformer is first and the resistors are after it...anyways, there are posts here and info on the web about adding SPDIF outputs to a reciever.
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