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I have just bought a Samsung 75Q90 TV which only has optical Toslink outputting PCM.
I have bought a little Toslink to SPDIF co-ax converter which does not work with the Buffalo. The unit is fine as works with several other DACs.
I see the manual for the 32S mentions setting a switch to enable PCM but can't work out how to do this.
Can anyone please help?
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From memory, the 32S only has an SPDIF-I2S switch. You would want that switched to SPDIF
There is no PCM switch. The 9018 decodes PCM by default.
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Thanks Possum, I had downloaded the manual for the 9008, it was late last night!
I have the correct manual now and it says " The SPDIF switch is used to connect etc, then says It should be switched off ..such as when you plan on using PCM or DSD.
It's a bit late now but I'll try that in the morning, its a mystery otherwise.
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If you switch it off then SPDIF input (which is what you want) will not work. It should only be off for PCM or DSD input via I2S
SPDIF is a protocol for sending data serially over a single signal wire (I2S sends it over 3 wires and is limited to very short distances but is much higher quality)
SPDIF can transmit a number of audio codecs, such as PCM, DTS, or dolby digital - your tv does PCM over SPDIF
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Thanks for the clarification, I can't understand why this won't work with the Buffalo when it (and a replacement kindly sent by the supplier ) work fine with other optical sources.
I have bought a another device for very little money off eBay and it has optical in and normal audio RCA out so I'll use that for the TV into my system for now.
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If the input is SPDIF, you must have the SPDIF switch ON. SPDIF is not TTL level, so the switch connects a comparator in series to convert the SPDIF input to the proper levels for the DAC. The DAC figures out if the input is PCM or otherwise.
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