Surrounds = Bipole / How about the Rear Surrounds? - AVS Forum
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post #1 of 22 Old 04-30-2007, 03:54 PM - Thread Starter
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I got the Focal SR800v's for the surround speakers... However, what type of speaker should I get for the rear surrounds? I think I read somewhere that they should be direct firing?

Your thoughts?
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post #2 of 22 Old 04-30-2007, 07:19 PM - Thread Starter
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no replies??

bump
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post #3 of 22 Old 04-30-2007, 07:55 PM
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For HT the recommendation is to use dipoles for the rears. Some prefer direct for all surround - both side & rear surrounds.

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post #4 of 22 Old 04-30-2007, 08:26 PM - Thread Starter
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thanks drhack.

anyone else?
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post #5 of 22 Old 04-30-2007, 09:09 PM
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I almost exclusively watch movies and tested both direct and multi-polar and found multi-polar sounded much better. This was especially true the closer the seat is to the speaker. If you like the way the SR800v's sound as surrounds I bet you'll like also like them as rears.

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post #6 of 22 Old 05-01-2007, 12:05 AM
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about how far will be sitting from the side and rear speakers?
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post #7 of 22 Old 05-01-2007, 02:35 AM
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This might be an interesting read...

http://www.hometheatermag.com/bootcamp/25/index2.html

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"The Black Hole" HT (and other stuff..): http://www.denonline.nl
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post #8 of 22 Old 05-01-2007, 06:02 AM
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Try the SR700V for the rear 's. I have SR800V's and two SR700V's in back, it's super.

The SR800V is not a dipole. It's wired bipolar and behaves more like a wide dispersion monopole. IMO the sound is very accurate and smooth while filling the room with surround information. It does not have the smeared sound of a dipole.

The SR700V's are monopole and the cabinets match the SR800V's; same tweeter with a single 6.5" vs. the two 5.250" in the SR800V. I think they are some of the best surrounds you can buy today. And you will be ready for Dolby TrueHD and DTS-HD.
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post #9 of 22 Old 05-01-2007, 09:24 AM - Thread Starter
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I would say I am about 8' away from the sides and about 12+' away from the rears. (in my current environment which will change within the next 2-3 years)
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post #10 of 22 Old 05-01-2007, 11:32 AM
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7-channel surround processing runs the two rear speakers in stereo. The more diffuse the rear speakers, the more difficult to hear left-vs-right separation behind you (where our human hearing is not so good to begin with). With that in mind, my first choice would be direct firing monopoles, followed by bipoles and then dipoles. It's different for sides speakers: even when those are diffuse, there's no mistaking sound coming from your left side vs sound along the right side.

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post #11 of 22 Old 05-01-2007, 03:41 PM
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Quote:
Originally Posted by sdurani View Post

7-channel surround processing runs the two rear speakers in stereo. The more diffuse the rear speakers, the more difficult to hear left-vs-right separation behind you (where our human hearing is not so good to begin with). With that in mind, my first choice would be direct firing monopoles, followed by bipoles and then dipoles. It's different for sides speakers: even when those are diffuse, there's no mistaking sound coming from your left side vs sound along the right side.

Sanjay

How about for a 6.1 setup?
I actually came on the boards to post this question today, so sorry to hijack the thread OP.
My rear would be 3ft behind the seating position and 7ft high.
My set up
Yamaha RX-V2400
Rotel RB 960 BX Power Amp for fronts
Pioneer DV-676A
Rotel RCD-965BX
Accoustic Energy Evo 3B Fronts and Centre
Def Tech BPX 1.2 surrounds
SVS PB12-Plus/2 sub
Panny42" PWD6
Harmony 676
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post #12 of 22 Old 05-01-2007, 08:05 PM
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Quote:
Originally Posted by drhack View Post

For HT the recommendation is to use dipoles for the rears.

I think that this is obsolete advice. THX used to recommend this but has since changed to dipoles for the sides and direct for the rears. I believe Dolbly also recommends the same.

Ed
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post #13 of 22 Old 05-01-2007, 08:22 PM
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Quote:
Originally Posted by Des Flurane View Post

How about for a 6.1 setup?

I would avoid a single rear speaker if at all possible, because of a psychoacoustic phenomenon called back-to-front reversals. Sounds along the listener's centre line can sometimes be perceived as coming momentarily from in front (which is where our brain expects it to be), even if the actual speaker is directly behind or above. This doesn't happen with a single centre speaker up front because that's where our hearing is most acute.

The solution is as simple as it gets: just use two speakers behind you, spread well away from the centre line. This is the main reason why Dolby and DTS and THX all recommend using two rear speakers, even for the mono surround-back channel of their EX/ES formats. Note that this is the only channel for which two speakers are recommended for playback. And since you have a 7.1-channel receiver anyway...

Sanjay

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post #14 of 22 Old 05-01-2007, 09:49 PM
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Get the same for the rears. No question. I have four identical bipole surrounds.
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post #15 of 22 Old 05-01-2007, 09:56 PM
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Monopoles all the way around.

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post #16 of 22 Old 05-02-2007, 09:51 AM - Thread Starter
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wow... lots of different opinions!
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post #17 of 22 Old 05-02-2007, 06:37 PM
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PhilT3,

I would follow what sdurani says. After taking this advice plus some experimentation myself, I have my 7.1 set up with monopoles at the rear and bipoles at the side and I have found this gives a really hard to fault surround experience. When the sounds are meant to be generally diffuse they are and when something is meant to be locatable at the sides or back, it is.
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post #18 of 22 Old 05-02-2007, 07:31 PM
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Trouble is, now I have to choose what monopoles !!!!!!!!!!!!!!!!!
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post #19 of 22 Old 05-02-2007, 10:42 PM
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Quote:
Originally Posted by Des Flurane View Post

Trouble is, now I have to choose what monopoles !!!!!!!!!!!!!!!!!

Not so difficult. What other speakers (fronts, surrounds, etc) are you using? That will help narrow things down.

Sanjay

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post #20 of 22 Old 05-03-2007, 02:43 AM
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Quote:
Originally Posted by sdurani View Post

Not so difficult. What other speakers (fronts, surrounds, etc) are you using? That will help narrow things down.

Sanjay

See above post
Accoustic Energy Evo 3B Fronts and Centre
Def Tech BPX 1.2 surrounds
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post #21 of 22 Old 05-03-2007, 06:58 AM
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Quote:
Originally Posted by Des Flurane View Post

Def Tech BPX 1.2 surrounds

I would get something small from Def Tech, like the SM350 or the ProMonitor 1000. Rear speakers need not be fancy, just have to blend in with your side speakers and anchor certain sounds behind you.

Sanjay

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post #22 of 22 Old 05-03-2007, 07:51 PM
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Thanks.
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