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Where to place back speakers in 7.1 setup

sammyj
01-27-2009, 10:05 AM
OK, so I've got somewhat of a difficult set up. It would be impossible for me to place my Back speakers in a 7.1 setup behind the couch, where ideally they should be. I'd still like to use them if at all possible, instead of dropping down to a 5.1 setup.

Also, even in a 7.1, the majority of the rear sound comes from the surround right and left, right? The back really don't do all that much? I've attached a layout that I'm thinking. I'm actually thinking of putting my Back speakers off to the side of the room, and my Surround speakers slightly behind the listening position, pointed towards the listener. I'll be using an Audessy 2EQ to do the config, do you think this would be an acceptable set up or should I abandon the final 2 speakers?

Thanks in advance!

ImRizzo
01-27-2009, 10:15 AM
OK, so I've got somewhat of a difficult set up. It would be impossible for me to place my Back speakers in a 7.1 setup behind the couch, where ideally they should be. I'd still like to use them if at all possible, instead of dropping down to a 5.1 setup.

Also, even in a 7.1, the majority of the rear sound comes from the surround right and left, right? The back really don't do all that much? I've attached a layout that I'm thinking. I'm actually thinking of putting my Back speakers off to the side of the room, and my Surround speakers slightly behind the listening position, pointed towards the listener. I'll be using an Audessy 2EQ to do the config, do you think this would be an acceptable set up or should I abandon the final 2 speakers?

Thanks in advance!

Either use the rear speakers as "REARS" and your surrounds on the side as recommended otherwise you will be defeating the 7.1 sound effects intended by the sound producers or else simply go with 5.1

Stew4HD
01-27-2009, 11:48 AM
Either use the rear speakers as "REARS" and your surrounds on the side as recommended otherwise you will be defeating the 7.1 sound effects intended by the sound producers or else simply go with 5.1

Well said.. if there is no space behind your listening area, then I would stick with 5.1... oh yeah, I have mine set up as 5.1 since I have no space behind my seating.

PFC5
01-27-2009, 09:16 PM
I think how his diagram is setup he will be fine with the 7.1 setup.

I have my extra 2 rear surrounds in my 7.1 setup on the sides at about 5.75 feet above the floor since I have no space behind the seating either and i hear a definite improvement over just going with a 5.1 setup.

By setting them up higher it gives a sound stage that is more 3 dimensional with my acoustics. Of course my surround speakers are triangle shaped so this works to create a rear area beyond the wall that allows this to work with my setup. Stew knows the shape of Klipsch surrounds so this is doable.

Of course having the regular surrounds on the sides of the sitting area and having the rear surrounds behind the sitting area is much better, but when not possible you can still get benefit out of a 7.1 setup with the diagram he posted IMO.

soupnazi
01-27-2009, 11:25 PM
You have your surrounds on either side of your main listening position correct?

Can you place your rear channels on the outer walls a couple feet higher than the surrounds and if possible behind the surrounds? This is just a suggestion since every room is different. Try some different positions to see what sounds best.

I wouldn't place either of the effects channels (surround or rear) in front of the listening position. If they are in front it is easier to locate where the effects are coming from. Thus losing the effect of surround sound

sammyj
01-28-2009, 08:16 PM
I think I'll move the sides to be at a 90 deg angle to the listener and keep the rear surrounds where they are.

sammyj
01-28-2009, 08:17 PM
This is what I'm talking about although the SL and SR will be in line w/ the listener:

http://www.samirsworld.com/files/speakers_7.1_side_revised.jpg

BIslander
01-29-2009, 01:41 AM
I don't think your surrounds should be way out in front of the listening position. They should be even with or slightly behind the couch. If you can't move the couch forward, then 5.1 is probably your best bet. Put the surrounds as far back as the rears on your diagram. But, move them farther out toward the side walls.

Loves2Watch
01-29-2009, 08:11 AM
You could always just use a 6.1 solution where you only have 1 rear surround (it won't matter because both of the rear surrounds play the same material anyway) and that may present other placement solutions for the rear surround channel. Like so -

http://img522.imageshack.us/img522/9466/speakers71siderevisedzb6.jpg (http://imageshack.us)

Loves2Watch
01-29-2009, 08:24 AM
You could always just use a 6.1 solution where you only have 1 rear surround (it won't matter because both of the rear surrounds play the same material anyway) and that may present other placement solutions for the rear surround channel. Like so -

http://img522.imageshack.us/img522/9466/speakers71siderevisedzb6.jpg (http://imageshack.us)

Or on the floor behind the couch aiming upwards.

In either case you will still be getting all of the multichannel audio available.

PFC5
01-29-2009, 06:29 PM
You could always just use a 6.1 solution where you only have 1 rear surround (it won't matter because both of the rear surrounds play the same material anyway) and that may present other placement solutions for the rear surround channel. Like so -

http://img522.imageshack.us/img522/9466/speakers71siderevisedzb6.jpg (http://imageshack.us)

Many of the BD movies are starting to come with discrete 7.1 audio, so the 2 rear surrounds each get different (however slight it may be depending on the mix) signals now. With SD DVDs i agree though, however some say (and I disagree with them) that when you only have the rear surrounds being one mono channel for bot that the sound projects like it comes from the front instead of the rear, but the dual channels change this perception for the better. I disagree because when I had a 6.1 setup i could easily hear it coming from the back myself.

Loves2Watch
01-29-2009, 06:36 PM
Many of the BD movies are starting to come with discrete 7.1 audio, so the 2 rear surrounds each get different (however slight it may be depending on the mix) signals now. With SD DVDs i agree though, however some say (and I disagree with them) that when you only have the rear surrounds being one mono channel for bot that the sound projects like it comes from the front instead of the rear, but the dual channels change this perception for the better. I disagree because when I had a 6.1 setup i could easily hear it coming from the back myself.

OK so with that being said, I believe if you setup your receiver to be a 6.1 system, in the case of the discrete channels, they would still send all of the rear surround information through the single speaker.

PFC5
01-29-2009, 06:45 PM
OK so with that being said, I believe if you setup your receiver to be a 6.1 system, in the case of the discrete channels, they would still send all of the rear surround information through the single speaker.

Correct. If you only have a 6.1 system with 7.1 source material, then the 2 discrete rear surrounds would be merged into the one rear center surround in a 6.1 setup.

I was just stating that with many of the new BD soundtracks, that the rear surround channels are not matrixed but rather discrete. ;)

Loves2Watch
01-29-2009, 07:09 PM
Correct. If you only have a 6.1 system with 7.1 source material, then the 2 discrete rear surrounds would be merged into the one rear center surround in a 6.1 setup.

I was just stating that with many of the new BD soundtracks, that the rear surround channels are not matrixed but rather discrete. ;)

I did get that and was explaining for the OP and others that might be interested. 7.1 vs. 6.1 there isn't much if any difference in most cases.

PFC5
01-30-2009, 08:06 AM
Gotcha! ;)

Jim Bob Jones
01-30-2009, 12:21 PM
Many of the BD movies are starting to come with discrete 7.1 audio, so the 2 rear surrounds each get different (however slight it may be depending on the mix) signals now. With SD DVDs i agree though, however some say (and I disagree with them) that when you only have the rear surrounds being one mono channel for bot that the sound projects like it comes from the front instead of the rear, but the dual channels change this perception for the better. I disagree because when I had a 6.1 setup i could easily hear it coming from the back myself.
Oh yeah? Which ones? I only know of one: 3:10 from Yuma

PFC5
01-30-2009, 09:46 PM
Oh yeah? Which ones? I only know of one: 3:10 from Yuma

According to www.blu-raystats.com there are 65 now that are either DTS-HD MA 7.1 or LPCM 7.1 here:

http://www.blu-raystats.com/Stats/Stats.php?OrderBy=Studio&Audio=7.1

I didn't think there were this many yet but many of the movies i wouldn't even rent, but there are quite a few that i would rent or buy too.