What if 7.1 were... - Blu-ray Forum

davcole · 11-16-2008, 02:56 PM

... 5 front, 2 rear speakers?

For anyone how attended a presentation at an SDDS theater, this would have been the layout. In fact a great many Sony films had been produced in this format: 2 stereo channels, 2 effect channels, 1 center channel + 2 rear channels. I only had the opportunity to attend one SDDS presentation and it was stellar.

For those who regularily attended presentations, what are your thoughts on the 5.1+2 presentation and do you think home video would be better served with it?

Heart&Soul · 11-16-2008, 03:48 PM

5 front, 5 rear, 5 left, 5 right, 2 subwoofers. 20.2

cartman781 · 11-16-2008, 03:53 PM

Quote:

Originally Posted by Heart&Soul

5 front, 5 rear, 5 left, 5 right, 2 subwoofers. 20.2

OOH

Midnightsailor · 11-17-2008, 12:47 AM

Hmm... I haven't experienced it but it sure takes the surround aspect out of the picture.

Edit: lol the 20.2 sounds extreme.

RobFord · 11-17-2008, 01:15 AM

I believe the thing with SDDS is that it depends on the size of screen you are using. (please don't bite off my leg if you think this is incorrect

)

When you use 3 speakers for the front sound in a theatre there can be slight holes in the sound between the centre and L or R speakers. the LC and RC speakers that Sony use help to get rid of this effect.

If you have a home setup using either a large plasma or projection screen, you will not be experiencing this effect, As the spread of the speakers would be much narrower.

I have read this somewhere and can't remember the source, might try to find it for. But it makes sense to me as an audio guy.

Cheers

Midnightsailor · 11-17-2008, 01:22 AM

I used to work at a theatre and know exactly what you mean. I think it has a lot to do with the speakers as well. Some speakers just cover more area than others. I think the current 7.1 setup is perfect for home use, though.

Heart&Soul · 11-17-2008, 02:42 AM

You can never have too many speakers while listening to Warner lossy movies.

Opips2 · 11-17-2008, 06:11 AM

Add 9.1 ch. for future on new HVD formal....that's weird!

I thought that's 8.1 ch. because add 1 channel for behind back like a center speaker. left and right front, center, left and right rear, extra back right and left rear, add a behind back speaker = total 8.1 Ch.

look like draw a star on paper for 5.1 ch.
look like draw a circle pie cut 8 for 8.1 ch.
7.1 ch ?????
9.1 ch ???????

Midnightsailor · 11-18-2008, 07:51 AM

Quote:

Originally Posted by Heart&Soul

You can never have too many speakers while listening to Warner lossy movies.

lol agreed

Galley · 11-17-2008, 12:45 PM

Quote:

Originally Posted by Heart&Soul

5 front, 5 rear, 5 left, 5 right, 2 subwoofers. 20.2

Oh, so close! Actually, 22.2 is the surround sound component to Ultra Hi-Vision.

Bobby Henderson · 11-17-2008, 04:18 PM

The "five up front" classic Todd-AO 70mm audio design is only effective in movie theaters with really large screens. Back in the 1950s when Todd-AO was first developed most theaters were large, single screen builds -especially the ones that would show 70mm movies.

I see little to no need for 5 stage channels in a home theater setup. It would only make sense for a really large projection setup where you could place 5 towers behind the screen.

The overwhelming majority of home viewers have modest to small sized TV screens. Even if one could cram 5 speaker towers near and over or under the TV set the viewer wouldn't pick out the channel separation unless he was sitting really close.

It's simply more effective to use those two extra channels of audio in 7.1 out in the surround field. Two side surrounds and two back surrounds can be distinguished more easily than a 5 up front scheme.

Regarding SDDS, very few movies supporting the format in theatrical release featured 7.1 channel mixes. Complicating that further, very few theaters equipped for SDDS were wired for 7.1 presentation. The vast majority of SDDS-equipped theaters were wired merely for 5.1.

Mr. HiDef · 11-17-2008, 04:20 PM

Quote:

Originally Posted by Galley

Oh, so close! Actually, 22.2 is the surround sound component to Ulta Hi-Vision.

That is ridiculous

Opips2 · 11-17-2008, 05:06 PM

Quote:

Originally Posted by Mr. HiDef

That is ridiculous

Yeh, who pay....loudspeaker $12,000, and T.V $5000, recevices & amplifier $3000, and cable & wire $600 = $20,600

$20,600 is expensive hobby.

20.2 ch. must name same a company loudspeakers.

DOOM 2012 · 11-18-2008, 03:50 PM

Quote:

Originally Posted by Heart&Soul

5 front, 5 rear, 5 left, 5 right, 2 subwoofers. 20.2

LOL UR FUNNY HOW ABOUT 40.5 10 FRONT 10 LEFT 10 RIGHT 10 SUROUND AND 5 SUBWOOFERS = IMAX WOOOOOOO

DOOM 2012 · 11-18-2008, 03:57 PM

40.5 Suround Sound Sounds Better !!!!!

TauRus · 11-18-2008, 04:53 PM

Quote:

Originally Posted by DOOM 2012

40.5 Suround Sound Sounds Better !!!!!

Judging by the modded cars passing by my house a few times a day, some folks would be happy with a reverse audio standard - 1.40 where 1 stands for a cheap main audio channel plus 40 subs drowining out whatever audio information is fed through the 1 audio channel.

11-16-2008, 02:56 PM	#1
davcole Power Member Member since:Aug 2007 Location:Cincinnati, Oh 4K collection:138 Blu-ray collection:407 Digital collection:25 Blu-ray reviews: 146 Trading Score:9	What if 7.1 were... ... 5 front, 2 rear speakers? For anyone how attended a presentation at an SDDS theater, this would have been the layout. In fact a great many Sony films had been produced in this format: 2 stereo channels, 2 effect channels, 1 center channel + 2 rear channels. I only had the opportunity to attend one SDDS presentation and it was stellar. For those who regularily attended presentations, what are your thoughts on the 5.1+2 presentation and do you think home video would be better served with it?

11-17-2008, 06:11 AM	#8
Opips2 Special Member Member since:Nov 2008 Location:Edmonton, AB Home Theater Gallery:6 Blu-ray collection:175 Blu-ray reviews:10 Trading Score:1	Add 9.1 ch. for future on new HVD formal....that's weird! I thought that's 8.1 ch. because add 1 channel for behind back like a center speaker. left and right front, center, left and right rear, extra back right and left rear, add a behind back speaker = total 8.1 Ch. look like draw a star on paper for 5.1 ch. look like draw a circle pie cut 8 for 8.1 ch. 7.1 ch ????? 9.1 ch ??????? Last edited by Opips2; 11-17-2008 at 06:13 AM.

11-18-2008, 03:57 PM	#15
DOOM 2012 Banned Member since:Oct 2008 Location:CHICAGO ILL	40.5 = Imax Priceless 40.5 Suround Sound Sounds Better !!!!!

11-16-2008, 03:48 PM	#2
Heart&Soul Senior Member Member since:Dec 2007 Location:Oregon 4K collection:167 Blu-ray collection:725 Blu-ray reviews:50	5 front, 5 rear, 5 left, 5 right, 2 subwoofers. 20.2

11-17-2008, 12:47 AM	#4
Midnightsailor Special Member Member since:Jan 2008 Location:Los Angeles, CA Blu-ray collection:32 Blu-ray reviews:1	Hmm... I haven't experienced it but it sure takes the surround aspect out of the picture. Edit: lol the 20.2 sounds extreme.

11-17-2008, 01:15 AM	#5
RobFord Junior Member Member since:Nov 2007	I believe the thing with SDDS is that it depends on the size of screen you are using. (please don't bite off my leg if you think this is incorrect ) When you use 3 speakers for the front sound in a theatre there can be slight holes in the sound between the centre and L or R speakers. the LC and RC speakers that Sony use help to get rid of this effect. If you have a home setup using either a large plasma or projection screen, you will not be experiencing this effect, As the spread of the speakers would be much narrower. I have read this somewhere and can't remember the source, might try to find it for. But it makes sense to me as an audio guy. Cheers

11-17-2008, 01:22 AM	#6
Midnightsailor Special Member Member since:Jan 2008 Location:Los Angeles, CA Blu-ray collection:32 Blu-ray reviews:1	I used to work at a theatre and know exactly what you mean. I think it has a lot to do with the speakers as well. Some speakers just cover more area than others. I think the current 7.1 setup is perfect for home use, though.

11-17-2008, 02:42 AM	#7
Heart&Soul Senior Member Member since:Dec 2007 Location:Oregon 4K collection:167 Blu-ray collection:725 Blu-ray reviews:50	You can never have too many speakers while listening to Warner lossy movies.

11-17-2008, 04:18 PM	#11
Bobby Henderson Power Member Member since:Jan 2008 Location:Oklahoma Blu-ray collection:96 Blu-ray reviews: 12	The "five up front" classic Todd-AO 70mm audio design is only effective in movie theaters with really large screens. Back in the 1950s when Todd-AO was first developed most theaters were large, single screen builds -especially the ones that would show 70mm movies. I see little to no need for 5 stage channels in a home theater setup. It would only make sense for a really large projection setup where you could place 5 towers behind the screen. The overwhelming majority of home viewers have modest to small sized TV screens. Even if one could cram 5 speaker towers near and over or under the TV set the viewer wouldn't pick out the channel separation unless he was sitting really close. It's simply more effective to use those two extra channels of audio in 7.1 out in the surround field. Two side surrounds and two back surrounds can be distinguished more easily than a 5 up front scheme. Regarding SDDS, very few movies supporting the format in theatrical release featured 7.1 channel mixes. Complicating that further, very few theaters equipped for SDDS were wired for 7.1 presentation. The vast majority of SDDS-equipped theaters were wired merely for 5.1.

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