Alex.D
Agent
- Joined
- Dec 9, 2002
- Messages
- 33
I'm curious about how an AVR320 does bass management for analog inputs internally - whether it's an analog crossover, or whether the signal goes back into the digital domain.
If it's analog, I can definitely see that using a high-quality source, such as SACD or DVD-A makes sense even with bookshelf speakers that require bass management. We filter frequencies below 100hz or 80hz, send that to the speakers, and send the ".1" input + bass from other channels to the sub.
If it's digital, then things become really silly really quickly. What's the resolution / sampling rate of the AVR320's ADC's then? If it's below 24/192, is there a point to using high-rez signals from the DVD-Audio player?
The situation is even worse with SACD. Assuming no bass management on the behalf of the player, we get DSD -> analog -> PCM -> analog. If my understanding of DSD's advantages is correct, the point of SACD is that you have insane temporal resolution (.00000036 seconds for SACD vs. .000005 for 192khz DVD-A, or fifteen-fold improvement). Then, by applying digital bass management, you lose this advantage entirely!
CD's sound just dandy on the receiver using digital output on a DVD player, and via analog using my old(er) CD player.
However, I am looking to buy a DVD player with one of the high-rez format support, and I'm curious as to the signal degradation that comes from using these multiple A/D and D/A conversions. If, given my current setup (changing receivers is not much of an option, given the low price I paid for the AVR320, which basically sparked me getting into the whole Home Theater thing), I have to use bass management of analog inputs, I don't think there is a point in having high-rez formats given the state of consumer-level equipment (aside from multichannel advantages, but they are already afforded by DTS CD's).
Is there a DVD-A player that can have its 24/96 and 24/192 outputs "unlocked" for digital output? That's the only application I can think of for those 24/192 DACs in the receiver.
This brings me to my second question - Why ARE There 24/192 DACs in the receiver? Since the highest-rez format most DVD players can put out digitally is 24/48, there's no point in having DACs more powerful than that. What device can put out a 24/96 or a 24/192 stream?
If it's analog, I can definitely see that using a high-quality source, such as SACD or DVD-A makes sense even with bookshelf speakers that require bass management. We filter frequencies below 100hz or 80hz, send that to the speakers, and send the ".1" input + bass from other channels to the sub.
If it's digital, then things become really silly really quickly. What's the resolution / sampling rate of the AVR320's ADC's then? If it's below 24/192, is there a point to using high-rez signals from the DVD-Audio player?
The situation is even worse with SACD. Assuming no bass management on the behalf of the player, we get DSD -> analog -> PCM -> analog. If my understanding of DSD's advantages is correct, the point of SACD is that you have insane temporal resolution (.00000036 seconds for SACD vs. .000005 for 192khz DVD-A, or fifteen-fold improvement). Then, by applying digital bass management, you lose this advantage entirely!
CD's sound just dandy on the receiver using digital output on a DVD player, and via analog using my old(er) CD player.
However, I am looking to buy a DVD player with one of the high-rez format support, and I'm curious as to the signal degradation that comes from using these multiple A/D and D/A conversions. If, given my current setup (changing receivers is not much of an option, given the low price I paid for the AVR320, which basically sparked me getting into the whole Home Theater thing), I have to use bass management of analog inputs, I don't think there is a point in having high-rez formats given the state of consumer-level equipment (aside from multichannel advantages, but they are already afforded by DTS CD's).
Is there a DVD-A player that can have its 24/96 and 24/192 outputs "unlocked" for digital output? That's the only application I can think of for those 24/192 DACs in the receiver.
This brings me to my second question - Why ARE There 24/192 DACs in the receiver? Since the highest-rez format most DVD players can put out digitally is 24/48, there's no point in having DACs more powerful than that. What device can put out a 24/96 or a 24/192 stream?
