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RE: Hi and sorry i know that this a DIY question ... but nobody answer so i try again here

Posted by Thorsten (M) on April 13, 2015 at 20:27:20

In Reply to: Hi and sorry i know that this a DIY question ... but nobody answer so i try again here posted by beppe61 on April 12, 2015 at 02:28:29:

Hi,

> Would it be possible, with schematic available, to add a spdif
> input to a cd player ?

In principle - yes.

You need to understand the data-format the transport produces (usually 16-Bit in either I2S or EIAJ) and then get a "UNIVERSAL" SPDIF board (there are some on e-bay using WM8804/8805 that are not completely terrible) and then remove the connection from the drive and feed clock and data from the SPDIF board. You may need to re-arrange the mute drive as well.

If you understand how the CD-Player well enough to get it all correct the actual surgery is usually not that huge, other than finding a way to install the SPDIF Board.

All that said, I think you can probably find a Kit DAC with your DAC Chip of choice for not a lot of money, so this may be a better choice.

Thor

At 20 bits, you are on the verge of dynamic range covering fly-farts-at-20-feet to intolerable pain. Really, what more could we need?

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