SPDIF Pass through?

zacster · 14th March 2008, 08:38 PM

I have a Monica tube dac (16 bit, up to 192 according to philips spec sheet) and also an HT receiver that is 24/192 capable. I'd like to be able to daisy chain the SPDIF to the two of them from the same transport. I was going to install an out jack on the Monica and run a digital cable from the Monica to the receiver.

The reason for wanting this is the Monica sounds great with CD, much better than the DAC in the receiver or the built in DAC in the player, but the receiver can do full 24/96 and sounds spectacular with 24/96 music recorded from LP to DVD on my Mac. I've played the DVDs through the Monica and it works but doesn't sound good at all, almost like the timing is off.

Is it as easy as just passing the signal through, or do I need something to keep the signal clean?

rfbrw · 14th March 2008, 09:16 PM

Why not add a second output to the transport?

rossl · 14th March 2008, 10:08 PM

SPDIF connections are point-to-point with a driver and a terminated receiver. Adding on more wire to the terminated end will just muck it up with reflected signal edges.

rfbrw has a good suggestion. add a new driver to the transport.

zacster · 15th March 2008, 02:25 AM

For the price of the transport maybe I'll just buy another one. It'll be cheaper than trying to mod what I have, an already modded Toshiba 3960.

rfbrw · 15th March 2008, 12:09 PM

Quote:

Originally posted by rossl
SPDIF connections are point-to-point with a driver and a terminated receiver.

Hence the use of build-out resistors and invention of the digital audio distribution amplifier.

rfbrw · 15th March 2008, 12:38 PM

Quote:

Originally posted by zacster
For the price of the transport maybe I'll just buy another one. It'll be cheaper than trying to mod what I have, an already modded Toshiba 3960.

I doubt you could get a DVD player for the price of a TTL chip or two.

zacster · 15th March 2008, 01:04 PM

Maybe, but the mod is never just about the part. There's the jack, the wire, and the time I'd spend figuring it out since I've never done anything digital. And then there's that special tool that you undoubtedly need to finish...

I think I need an excuse to get a new Oppo anyway.

14th March 2008, 08:38 PM	#1
zacster diyAudio Member Join Date: Dec 2003 Location: NYC	SPDIF Pass through? I have a Monica tube dac (16 bit, up to 192 according to philips spec sheet) and also an HT receiver that is 24/192 capable. I'd like to be able to daisy chain the SPDIF to the two of them from the same transport. I was going to install an out jack on the Monica and run a digital cable from the Monica to the receiver. The reason for wanting this is the Monica sounds great with CD, much better than the DAC in the receiver or the built in DAC in the player, but the receiver can do full 24/96 and sounds spectacular with 24/96 music recorded from LP to DVD on my Mac. I've played the DVDs through the Monica and it works but doesn't sound good at all, almost like the timing is off. Is it as easy as just passing the signal through, or do I need something to keep the signal clean?

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14th March 2008, 09:16 PM	#2
rfbrw diyAudio Member Join Date: Oct 2001 Location: .	Why not add a second output to the transport?

14th March 2008, 10:08 PM	#3
rossl diyAudio Member Join Date: Nov 2004 Location: Central Ohio	SPDIF connections are point-to-point with a driver and a terminated receiver. Adding on more wire to the terminated end will just muck it up with reflected signal edges. rfbrw has a good suggestion. add a new driver to the transport.

15th March 2008, 02:25 AM	#4
zacster diyAudio Member Join Date: Dec 2003 Location: NYC	For the price of the transport maybe I'll just buy another one. It'll be cheaper than trying to mod what I have, an already modded Toshiba 3960.

15th March 2008, 01:04 PM	#7
zacster diyAudio Member Join Date: Dec 2003 Location: NYC	Maybe, but the mod is never just about the part. There's the jack, the wire, and the time I'd spend figuring it out since I've never done anything digital. And then there's that special tool that you undoubtedly need to finish... I think I need an excuse to get a new Oppo anyway.

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