Can I put my subwoofer behind my couch? - AVS Forum
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post #1 of 20 Old 12-09-2006, 01:58 PM - Thread Starter
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I'm in the middle of finishing part of my basement into a dedicated home theater, and the only place the subwoofer will be able to go (and look nice) is behind the couch.

Is this OK to do? It will be about 5 feet from the main listening position.

I can place it one other place in my room but it will be about 13 feet from the listeners, and it will rest against a wall leading to the unfinished part of my basement.

If I put the subwoofer behind the couch, it will be against the corner of the house itself (eg. the foundation wall).

Please tell me what you think.

Thanks,
John
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post #2 of 20 Old 12-09-2006, 02:03 PM
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Quote:
Originally Posted by sofakng
Is this OK to do?
Yes.

"The greatest obstacle to discovery is not ignorance  it is the illusion of knowledge." - Daniel Boorstin
"Our lives begin to end the day we become silent about things that matter.
" - MLK

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post #3 of 20 Old 12-09-2006, 10:30 PM
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Another yes.

Randy
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post #4 of 20 Old 12-10-2006, 07:43 AM
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I don't know can you? j/k

a third, YES.
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post #5 of 20 Old 12-10-2006, 07:46 AM
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And a fourth YES,the only thing you cannot do is use the sub as a couch and sit on the woofer! :p

Ask yourself mortal , do you have as much displacement as me ? The answer is no unless you have a Windmere fan sub.
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post #6 of 20 Old 12-10-2006, 08:53 AM - Thread Starter
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Thanks for all of the replies :)

Will the subwoofer sound the same regardless if it's in front or behind the couch?
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post #7 of 20 Old 12-10-2006, 08:54 AM
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Personally I would not recommend placing a sub behind the listening position.

Even if the sub is crossed over relatively low to reduce localization of the fundamental frequncies, its the harmonic distortion you need to worry about. As the sub is pushed harder, the harmonics often become audible above the crossover, making it easy to tell that the sub is behind you. Ideally, IMHO, the sub should be at the front of the room, near the mains in order to blend perfectly.
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post #8 of 20 Old 12-10-2006, 10:19 AM
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Crossed over no higher than 80 Hz, I'd say yes. That's where my STF-3 is and I can't really tell.

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post #9 of 20 Old 12-10-2006, 04:37 PM
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I have 2 subs and they are sitting on both sides of it because it is made of fabric and it absorbs the bass making it nice and tight and not boomy.....
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post #10 of 20 Old 12-10-2006, 08:16 PM
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another yes, have mine behind my to chairs.
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post #11 of 20 Old 12-10-2006, 09:00 PM
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Me too.

Here's my PC Ultra doing it's best Kilroy-was-here impression from behind the sectional.

[IMG]http://www.***************.com/attach//816584-1viewtocouch.JPG[/IMG]


Tim

He drove a black and white pirate ship at 190 mph.
- Dale in the #3 will never be forgotten. Thanks for the memories.
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post #12 of 20 Old 12-11-2006, 02:25 AM
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Unless there’s an acoustic issue in the space, nearfield placement as described is not the ideal location regardless where it’s crossed. If you can’t tell there’s a sub behind your head you’re very lucky, and less likely to be bitten by the hobby. However, if maximum impact is the goal, the closer to ones ears the better...pretty simple really.

Most people don't know what they want...but, they're pretty sure they haven't got it. ©

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post #13 of 20 Old 12-11-2006, 08:52 PM
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My PB12-Plus/2 is about 3' behind my listening position (corner loaded) and my couch is backed right up to it. You get TONS of impact with it being so close and I've never had any serious issues with feeling like the sub was behind me. In fact, when friends hear my home theater for the first time ever they feel tons of bass but always ask me where the sub is (thinking it is behind the TV straight ahead in the opposite corner from where it actually is).
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post #14 of 20 Old 12-11-2006, 10:13 PM
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I recently requested a sub recommendation from HSU and behind the couch is where he suggested it should go in my room.

Room specs:

Room Length: 27
Room Width: 15
Room Height: 11.5
Listener Which Wall?: b
Distance to Back Wall (Behind Listener): 12 ft.
Type of Seat: Sofa.

Notes on Room Size: Wall A has two openings. The middle is the opening to the hall and front door (6' to the door, then the hallway tapers to a 3' hallway past wall B). The rear is the opening to the kitchen (10' x 24', 8' ceiling). Previous described hallway also goes back to kitchen.
Questions and Comments: The ceiling tapers from Wall A (11.5') to Wall C (8').

So the Wall A, Wall B, etc... will make sense, check the link.
http://www.hsuresearch.com/support/index.php?id=36

Quote:
That is a HUGE space for the bass to energize (bass will have to energize the kitchen as well). I would suggest getting our new VTF-3 MK3. Call in your order. It just came in and its not on the website yet. Our introductory price for it is $649. An upcoming review measured 112 dB at 20 Hz (with turbo option, 109 dB without turbo) compared to 106 dB for the reviewer's SVS Ultra. Its the size of the HO but with a 350W amp. If you can, place the sub directly behind the sofa with the woofer firing directly into the back of the sofa, with 1" spacing between the grille and the sofa. If that is not feasible, use it as an end table.
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post #15 of 20 Old 12-12-2006, 05:20 AM - Thread Starter
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Thanks for all of the replies!

I'm going to wire subwoofer wall-jacks in three locations (all are behind the couch). I'll try it in each location and see which is best...

(Although I suspect placing it directly behind the couch will give the best feel and reduce localization effects [is that the right term?])

Thanks again everybody for your help!
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post #16 of 20 Old 12-15-2006, 12:37 PM
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i have 2 sunfire juniors behind my couch and have no complaints! :D

Jamie
No Longer Works For ELAN Home Systems, Sunfire and Homelogic Tech Support Specialist.
MY opinions are my own and when i am in forum i do not represent any of these companies!
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post #17 of 20 Old 12-16-2006, 09:07 AM
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Dr. Hsu suggests trying a behind the couch placement in the paper work that came with my 1225.

This works extremely well in my room. With the right films, the couch quite literally shakes.....I never had that sort of visceral impact with it in the front of the room.

Brian
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post #18 of 20 Old 12-17-2006, 07:16 PM
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This is very interesting to me because I am going to be building a new room soon. Some of the recent articles I have been reading show "proper" placement of subs. For instance, two subs should be placed one in the center of the front wall and one in the center of the rear wall,facing in. I can,t wait to start trying out different locations in my new room and posting results.

Espo77
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post #19 of 20 Old 12-17-2006, 07:24 PM
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Quote:
Originally Posted by OvalNut
Me too.

Here's my PC Ultra doing it's best Kilroy-was-here impression from behind the sectional.

[IMG]http://www.***************.com/attach//816584-1viewtocouch.JPG[/IMG]


Tim
Dude, this looks like an awsome listening room. Tell me about the blue panels on the back walls. My experience is the best sound in the room is out in the center of the room somewhere,not on the rear wall.Talk to me about this set up.

Espo77
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post #20 of 20 Old 12-17-2006, 09:31 PM
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Quote:
Dude, this looks like an awsome listening room. Tell me about the blue panels on the back walls. My experience is the best sound in the room is out in the center of the room somewhere,not on the rear wall.Talk to me about this set up.
Thanks Espo,

I'm real happy with how it turned out. You can click on the link below to follow the whole story of how the room treatments came together, complete with before and after pictures, graphs and impressions. I look forward to your thoughts.

Oval's Nutty Room Gets the Treatment from GIK Acoustics


Tim

He drove a black and white pirate ship at 190 mph.
- Dale in the #3 will never be forgotten. Thanks for the memories.
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