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Fiio M11 -> SPDIF -> C-DSP 8x12 V2.0 | Dither? 2 years 2 months ago #44674

  • felusch
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Hi,

I´m playing 192kHz/24bit AIF files from a FiioM11 to a Mini DSP C-DSP 8x12 V2.0 via SPDIF copper.
There are modulated noise artefacts that sounds like missing dithering and truncation of LSBs.

I can not find more informations from the document then:
C8x12 has a asynchronus SRC at the digital inputs that can not be bypassed and the device internaly runs allways at 32bit float.

What does the SRC to the wordlenght of an input signal?

When I switch to analog connection there artefacts are not pressent.
I think it must be something at the Mini DSP site.

Any ideas, help, suggestions?
Can someone confirm this issue?

Thanks for your help
Regards
Bodo

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Fiio M11 -> SPDIF -> C-DSP 8x12 V2.0 | Dither? 2 years 2 months ago #44823

  • devteam
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@Bodo

As already mentioned via your support portal request, no dithering done or any truncation (especially on 24bit) from the SRC. Most likely something down to the file format or the way it was generated?

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Fiio M11 -> SPDIF -> C-DSP 8x12 V2.0 | Dither? 1 year 11 months ago #46363

  • datooff
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A question to Minidsp guys. Don't want to start a new topic.

I'm using the same Fiio M11 and C-DSP 8x12 v2 DL.
Trying to connect via SPDIF (the cable is NEVD-5001 digital coaxial).

The signal is on when I connect to analog inputs, but when connected to SPDIF input - there's no signal. I tried almost all settings on Fiio, nothing works,

What can be the problem? Thank you!

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Fiio M11 -> SPDIF -> C-DSP 8x12 V2.0 | Dither? 1 year 5 months ago #49958

  • shegl
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You might use wrong cable, you need use 75 Ohm one.

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Fiio M11 -> SPDIF -> C-DSP 8x12 V2.0 | Dither? 1 year 5 months ago #49960

  • datooff
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Hi, the reason was that fiio wanted a 4pin 3.5 jack instead of 3 pin.
I soldered rca instead of 3.5 and used rca-4 pin 3.5mm adapter supplied by fiio.

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