RP91 audio DAC's

Discussion in 'Archived Threads 2001-2004' started by DanG, Jul 11, 2001.

  1. DanG

    DanG Stunt Coordinator

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    (Also posted at AVS)
    The last couple of days I've spent listening to classical music with my RP91. Normally I wouldn't crank the volume on my Denon 4800 much past -26db in fear of damaging the mediocre back surround speakers. The lack of analogue bass management by the RP91 just exacerbates the situation.
    However the sounds were nice to listen to, I knew I had to HT the situation.
    John Kotches replying to a previous post of mine in this forum offered me some salient advice. Get the Outlaw ICBM or upgrade your surrounds. So yesterday I HT'd it. I bought new back surrounds.
    The front Celestion Ditton towers have no problem with what the Denon dishes out. The Paradigm Titan Centre seem to be up to the task in analogue and the Titan middle surrounds are only used in DD-DTS5.1 playback so they are protected by the Denons bass management. The sub is a large Miller&Kreisel, tomorrow I'll be HT'ing the current amp with a Marantz MA-500. It was the back surrounds that were the problem. So I bought a pair of Paradigm Monitor 3's ($477) that go to 36Hz DIN -150 watt power handling for DVD-A analogue mode. When I choose analogue mode on the Denon it switches to SPKR-B the Monitors and when I go Digital it switches to SPKR-A the old Canton surrounds.
    So I started listening this afternoon and started cranking up the volume til I had -14 db. Sounded great. Then I noticed someting odd. The analogue mode sounded noticeably better than DTS 6ch mode.
    I was playing NAXOS -Vivaldi Four Seasons DVD-Video audio disc. In one movement I can hear a harphichord more clearly in analogue than digital. Also the violins seemed to be sharper and have more "attack" in analogue than digital. Also as the violin section comes to a pause the sounds seem to take longer to die out than in digital.
    I bought the Denon because of the Analog Devices DAC's and Burr-Brown and have been pleased with the sound. But apparently it seems for classical music I prefer the RP91's audio DAC's.
    Again, thanks John and a nod to TedM.
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  2. Zack

    Zack Auditioning

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    Could be 2 things - first, the digital output will "downconvert" any audio to 16 bits with probably a max of 48k. This is to "protect" the music from being digitally copied with bit-for-bit accuracy. So your analog outputs are giving you whatever the disc was mastered at - up to 24 bits at 192k, although most likely it's more like 20-24 bits at 96k.
    The second reason could be that the dacs in the Panny are newer and better than the ones in the Denon (although I doubt it). They do resolve to 192k, where the Denon is limited to 96k, but that shouldn't affect anything too much.
    Now that I think about it, has anyone used the Panasonic to do any real audiophile listening with DVD Audios and CDs? I'd be interested to hear the results...
     
  3. DanG

    DanG Stunt Coordinator

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  4. Andrew Pratt

    Andrew Pratt Producer

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