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48K, 96K or 192K

Please excuse my ignorance on the subject...

I just bought an upconverting DVD player which will also play dvd-a discs. There is an option to set the SPDIF to either "Raw" or "PCM" (default is raw). The output frequency of the LPCM audio data can be set to 48K, 96K or 192K.

The front two channels of this device will be fed into a digital amplifier feeding a pair of NHT Xds. The remaining channels go into a B&K AVR305 av receiver.

What does all of this mean, and how should I set this puppy up?

Thanks in advance.

Jim
jwilt
tvad
9,467 posts
 
02-14-06: Kr4
DVD is up to 24/48. DVD-A can be anything up to 24/192, at least in 2 channels, and up to 24/96 in 5.1. So, set the output for 192kHz in order not to down-sample and mangle the best discs.

Kal
Kr4 (Threads | Answers)
Perhaps the setting needs to be made on a disc-to-disc basis? My Donald Fagen disc specifically mentions 48khz/24bit. I don't own any other DVD-A discs to compare.

I personally prefer to not upsample.
eldartford
4,262 posts
 
Tvad...Right on about DVDA! For years I have argued that it is as good or better than SACD, but for some reason most of those audiophiles who will accept high resolution have been snowed by Sony propaganda about DSD.

All my DVDA are 96KHz, although the protocol does allow for 192KHz.
kr4's avatar
kr4
3,424 posts
 
Tvad wrote: "Perhaps the setting needs to be made on a disc-to-disc basis? My Donald Fagen disc specifically mentions 48khz/24bit. I don't own any other DVD-A discs to compare.
I personally prefer to not upsample."
Who said anything about upsampling? Setting the permissible bandwidth of the digital output is something different from setting upsampling options. If you open the window to 24/192, 24/48 and 24/96 will pass equally well.

Kal
tvad
9,467 posts
 
Oh.

Thanks for the clarification.

One question, though. If 192khz passes all info through, why have three available settings on a player? Why not simply have 192khz as the default setting?

Jwilt mentions his is an upconverting player. The 192khz setting upconverts 48khz and 96khz, does it not?

It seems some info is missing from the table (at least from my table...)
kr4's avatar
kr4
3,424 posts
 
Well, the reason for limiting the output bandwidth is to account for whether or not the device receiving the output can handle it. If you send a 24/192 signal to a DAC or receiver which can only handle 24/48, the extra bits would be truncated producing a nasty sound.

Yes, he did mention that it is an upconverting player but I took his questions all to do with the digital output. Since we do not know exactly which player it is, I cannot be certain but I suspect the upconverting is available from the analog outputs and pertains, primarily, to CD sources.

Kal
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