Having trouble with high resolution formats DVD-A and such

T

timetohunt

Audioholic
No wonder when I mention DVD-A or SACD to someone, they usually indicate they have never even heard about it. I see this being too much for the average music enthusiast. But I guess many here try to go for higher resolution and have to learn it. Well, I thought I would easily understand most things with this but I'm having confusion. Here are some of the issues. Please help.

Background: I have a universal player (a Marantz DV7600) connected to my Pioneer AVR (VS94-THX). These two components are connected via HDMI and through multi channel RCA connections (5.1).

1. When using the HDMI(1) as the source, my DVD-Videos with dolby 5.1 are automatically encoded correctly to output to all channels. With some DVD-As , HDMI is only output to 2 channels, I can't get all 5 channels to work.

2. Some DVD-As have an audio selection menu to output 5.1, and when I choose it, it will work. Other DVD-As have no menu but I can tell from my DVD player display that its outputing 5.1 channel but I only get stereo (as indicated on my AVR - just stereo.

3. Some of these DVD-As offer Hi resolution surround and stereo. I have no idea how to tell if I am getting Hi-res. When I choose the Multi-Channel Input as my source I only can only get stereo with DVD-As, and don't no if its Hi-res to boot.

4. I notice I'm not getting any subwoofer action with SACDs. At least the two I played. I have a sub connection as part of my multi channel connects.
EDIT: SCRATCH ISSUE #4, i put on a dianna krall SACD and have subwoofers working, the other two were classical (maybe some classical stuff did not record a low frequ track?).

All of this is driving me crazy.
 
Last edited:
J

jostenmeat

Audioholic Spartan
I have never owned any SACD or DVDA, but the one common problem I know of (regarding #4) is the LFE cut in disc players. Usually, its -10 db. Sometimes less, but sometimes more! I would search to see if your player suffers from this, and the possible remedies.
 
nibhaz

nibhaz

Audioholic Chief
From pg 12 of owners manual

If you listen to multichannel DVD-Audio
through one of the digital outputs, it will be
downmixed to stereo. Also, high sampling rate
DVD-Audio (192kHz or 176.4kHz) will be
downsampled to 96kHz, 88.2kHz, 48kHz or
44.1kHz, depending on the disc (see page 40).
Multi channel and high sampling rate DVDAudio
is only available through the analog
outputs.
• All DVD-Audio and all Super Audio CD audio is
output only through the analog outputs (see
pages 41-42).

Pg 38

Says this about dvd-a through HDMI:

2: Output will be 48kHz/16-bit or 44.1kHz/16-bit.
Multi-channel PCM sources are down mixed to channel 2. (A source whose down-mixing is prohibited
is only output to FL/FR.)

Pg 39-40
Goes into more detail about dvd-a play back and digital output…



Basically you just need to use your analog multi-outs to insure you are always getting the hi-res mix.
 
j_garcia

j_garcia

Audioholic Jedi
That last line is pretty much the answer - you must use analog from this particular unit, and the same will be true for SACD also.
 
T

timetohunt

Audioholic
This is burning my brain up.

I think what I'm hearing is:
1. If its a DVD-A and it offers Dolby Digital (DD), I won't be able to get DD because HDMI is always downmixing. And when you output through multi-channel its 5.1 but not DD???.

I think I need to start a new thread and use specific example of what confusion I am having.
.....see, I understood your answers, but I can't get any hi-res surround with DVD-A using multi-channel, I seem to be able to with SACD.

really, I will start a new thread or two and only ask very very specific questions because I am becoming aware of far too many variables.
 
TLS Guy

TLS Guy

Seriously, I have no life.
This is burning my brain up.

I think what I'm hearing is:
1. If its a DVD-A and it offers Dolby Digital (DD), I won't be able to get DD because HDMI is always downmixing. And when you output through multi-channel its 5.1 but not DD???.

I think I need to start a new thread and use specific example of what confusion I am having.
.....see, I understood your answers, but I can't get any hi-res surround with DVD-A using multi-channel, I seem to be able to with SACD.

really, I will start a new thread or two and only ask very very specific questions because I am becoming aware of far too many variables.
You did not need to start another thread! Here is what I posted on your second thread.

You did not need to start a new thread!

You got the right answer in your last thread.

I have the Marantz 9600 which is similar to yours.

If you use a digital connection you will get two channel.

You must use the analog ext inputs to get the benefit of multichannel audio.

But there's more! I have posted about this until I'm blue in the face. SACD is for techno DIY nuts like me, not the general public. For you it is hobbled.

Now classical CDs have no sub channel. The guys who record those CD's are lunatics like me, who expect that your main speakers will reproduce from 20 Hz to over 20 KHz. Classical SACDs are either 2 channel, 3 channel or five channel.

Now SACD is not PCM based it is DSD based. Now you can not process in DSD, so you have two options.

Your Marantz player in the menu has two options for output of SACD. You can output in PCM. If you do this DSD will be converted to PCM, but then it will be no different to a CD! However you will be able to adjust the level of each channel.

If you set the player to output from the DSD decoder there is no channel leveling. The receiver will not do it either as you have to use the pass through inputs.

Also remember the surrounds for SACD and DVD Audio have to be in the rear of the room, the position of the center backs in a 7.1 system, not the surround position of 5.1 or 7.1

So if you want to listen to classical SACDs from the DSD decoder properly balanced, this is what you have to do. If you had to ask this question, it is likely beyond your resources.

1). If your receiver does not direct the surround info to the rears, then you have to build switching to direct the sound to the rear speakers.

2). To properly balance you speakers you need to build a unit to balance all the analog outputs between the Marantz and the external pass through inputs of your receiver.

3). If you speakers are not full range, you are stuck with a receiver. If you have separate preamp and amps then you can build switching to insert an external electronic crossover between the preamp output and the main speaker amp and your sub. The other thing you can do is run your speakers full range and send a buffered signal from a buffer amp to your sub.

I doubt this situation will survive. It only has because most SACD players convert to PCM and don't admit it, and people think they are listening to SACD via the superior DSD decoder and they aren't.

I think the best plan from the publics point of view is to bury these formats, and use the lossless "True HD" audio format of Blue Ray.

People have a hard time understanding that these systems are for the very few techno savy with some DIY skills, and the rest are basically defrauded.

I hate to have to tell you that if you get it right it sounds excellent.

This is a fairly recent post of mine on this very confused and misunderstood issue.

http://forums.audioholics.com/forums...96&postcount=8
 
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