What the best sub plasement for my room

goodspeaker · 13th October 2010, 08:29 PM

Hi
need to realize the best plasement for two 18" sub in home theater room.
1 or 2 or 3 ? and why?

It is not possible to place behinde of screen.

What is your suggestion?

MaVo · 14th October 2010, 12:59 AM

They say placing subs on two opposing walls, both in the middle of the wall, is quite good. Depends on your room. Usual procedure is iteration of: Place subs randomly and measure response - stop when good spot found.

MaVo · 14th October 2010, 01:02 AM

Oh, and to answer your question: we cant answer your question, since noone can step into your room with a measurement setup. From looking at the pic, they all look equally good or bad.

djn · 14th October 2010, 05:37 PM

What I found really helped was to (and don't laugh) place the subs in my listening position and crawl around the floor until I found the best spot, then revers you and the subs. Also, I ended up getting two powered subwoofers from GW and place them in the room and turned them up to 3/4 the volume of my main subs and it REALLY flattened out the resonse. I'd say my sub sig is flat where ever you sit. Sub signals are omni directional so you can't tell where they are coming from so placement is all about getting the flattest responce in your listening postion, then all around the room.

nac134 · 14th October 2010, 09:22 PM

djn is right. I installed audio systems for years, and placing the sub in the listening position and then walking around to find the best response is the most effective method.

Cal Weldon · 14th October 2010, 09:31 PM

Placement of the subs has everything to do with placement of the seats and measuring tapes can go a long way to determine where the wavelengths are likely to combine or cancel. As mentioned walking around will give you some information but are you walking around while enjoying your HT?

nac134 · 14th October 2010, 10:21 PM

The reason why you walk around is because room modes work both ways. The bass response you hear from any given location with the sub in the listening position will be nearly exactly the same as the response you will hear if you sit in the listening position and place the sub where you were standing. So when you do the walk around thing, you listen for where the response is best, and then put the sub there, and you will get the same response in the listening position.

14th October 2010, 09:31 PM	#6
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	Placement of the subs has everything to do with placement of the seats and measuring tapes can go a long way to determine where the wavelengths are likely to combine or cancel. As mentioned walking around will give you some information but are you walking around while enjoying your HT? __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

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14th October 2010, 12:59 AM	#2
MaVo diyAudio Member Join Date: Jan 2006 Location: Herne	They say placing subs on two opposing walls, both in the middle of the wall, is quite good. Depends on your room. Usual procedure is iteration of: Place subs randomly and measure response - stop when good spot found.

14th October 2010, 01:02 AM	#3
MaVo diyAudio Member Join Date: Jan 2006 Location: Herne	Oh, and to answer your question: we cant answer your question, since noone can step into your room with a measurement setup. From looking at the pic, they all look equally good or bad.

14th October 2010, 05:37 PM	#4
djn diyAudio Member Join Date: Oct 2004	What I found really helped was to (and don't laugh) place the subs in my listening position and crawl around the floor until I found the best spot, then revers you and the subs. Also, I ended up getting two powered subwoofers from GW and place them in the room and turned them up to 3/4 the volume of my main subs and it REALLY flattened out the resonse. I'd say my sub sig is flat where ever you sit. Sub signals are omni directional so you can't tell where they are coming from so placement is all about getting the flattest responce in your listening postion, then all around the room.

14th October 2010, 09:22 PM	#5
nac134 diyAudio Member Join Date: Sep 2008	djn is right. I installed audio systems for years, and placing the sub in the listening position and then walking around to find the best response is the most effective method.

14th October 2010, 10:21 PM	#7
nac134 diyAudio Member Join Date: Sep 2008	The reason why you walk around is because room modes work both ways. The bass response you hear from any given location with the sub in the listening position will be nearly exactly the same as the response you will hear if you sit in the listening position and place the sub where you were standing. So when you do the walk around thing, you listen for where the response is best, and then put the sub there, and you will get the same response in the listening position.

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