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adding digital input to a YBA CD player for use as a DAC ?
adding digital input to a YBA CD player for use as a DAC ?
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Old 22nd September 2014, 03:18 PM   #1
Bigun is offline Bigun  Canada
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adding digital input to a YBA CD player for use as a DAC ?
Default adding digital input to a YBA CD player for use as a DAC ?

I have a YBA Lecteur CD player that sounds amazing. I've never heard a 'modern' CD player or outboard DAC so I don't know if the DAC in my CD player sounds so good because it's the only one I have, or because it really does sound good. Anyhow, it does not have a digital input. I'm wondering if it's a big project to add a digital input to this thing so that I can use it as both a CD player and an outboard DAC ????
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Old 23rd September 2014, 01:30 AM   #2
abraxalito is online now abraxalito  United Kingdom
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Location: Hangzhou - Marco Polo's 'most beautiful city'. 700yrs is a long time though...
In the absence of a service manual it'll be a very daunting project.

Since CD players are by design clock masters I reckon your best bet at getting a solution is to implement an async USB interface - that way the player still gets to be clock master. Any other interface (S/PDIF for example) it has to be a slave and that's fraught with extra challenges.
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Old 25th September 2014, 12:57 AM   #3
Bigun is offline Bigun  Canada
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adding digital input to a YBA CD player for use as a DAC ?
I emailed YBA for a service manual - no response. Perhaps not surprising but I agree, it's not a sensible project to undertake with full design details.

How about I put an LED over the CD drive photo-detector and feed it with my digital signal so it 'thinks' it is playing a CD - ?!
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Old 25th September 2014, 12:59 AM   #4
abraxalito is online now abraxalito  United Kingdom
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How will you create your digital signal? The laser doesn't read S/PDIF off the CD.
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Old 25th September 2014, 01:53 AM   #5
Bigun is offline Bigun  Canada
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adding digital input to a YBA CD player for use as a DAC ?
I'm not serious about doing that, but I could imagine that somebody handy with FPGA's could arrange something.
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Old 25th September 2014, 10:50 AM   #6
JarekC is offline JarekC  Poland
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Hello,

What version do you have CD1 or CD3 Alpha?

Best regards
JarekC
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Old 4th March 2015, 11:51 AM   #7
ginetto61 is offline ginetto61  Italy
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Quote:
Originally Posted by abraxalito View Post
In the absence of a service manual it'll be a very daunting project...
Hi and sorry to jump in but i have the same curiosity
So if a service manual is available it can be done ?
I am on the same track of the thread Starter. Many exceptional old cd player can be found around but of course very few with digital inputs.
Often the mechanic goes bad and what remains is just an unusable box ... What a waste of electronics ...
Thanks and regards, gino
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Old 4th March 2015, 12:15 PM   #8
abraxalito is online now abraxalito  United Kingdom
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Location: Hangzhou - Marco Polo's 'most beautiful city'. 700yrs is a long time though...
Yes I reckon its achievable to implement an async USB interface if a service manual were available. Not trivial but doable.
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Old 4th March 2015, 07:21 PM   #9
Ken Newton is offline Ken Newton  United States
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What specifically is/are the external digital sources you wish to connect?
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Old 4th March 2015, 09:52 PM   #10
mlloyd1 is offline mlloyd1  United States
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adding digital input to a YBA CD player for use as a DAC ?
the original poster's question comes up occasionally.
i must admit to thinking about it sometimes myself.
does anybody have any links to a project where some diyer actually has successfully completed such a modification to his/her machine?
i can imagine one immediate, big problem would be getting data for old interface chips in the cdp ...

mlloyd1
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