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S/PDIF audio cable

Posted: Mon May 26, 2014 6:30 pm
by nbpf
What kind of cable is needed to connect the 3,5mm S/PDIF output port to a DAC ?

The standard cable supplied with the fit-pc3 works with a Naim DAC but, for instance, the Oehlbach NF 113 Digital, 75 Ohms HF impedance does not seem work with the same device !

Re: S/PDIF audio cable

Posted: Tue May 27, 2014 6:29 pm
by nbpf
I have done some further tests and my conclusion is that the 3.5mm S/PDIF output of my fit-pc3 works flawlessly with 16 and 24 bit, 44.1, 48, 96, 176.4 and 192 kHz files but NOT with 24 bit 88.2 kHz !

Files in this format (no matter whether FLAC or WAV) exhibit severe aliasing problems when played through the 3.5mm S/PDIF interface of my fit-pc3.

One can easily test the interface with the sample files from section "High Definition Frequency Sweeps" on ... naudio.php

The first file (88.2 kHz) produces obvious aliasing artefacts, the other three sound as they should. The question is whether this is a software or an hardware problem and whether the problem can be fixed. Any idea or suggestion ?

Re: S/PDIF audio cable

Posted: Sun Jun 01, 2014 10:39 am
by mbirger
There is nothing to be done with audio codec about that.
Try to update the SW driver.