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Subwoofer placement


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21 replies to this topic

#1 of 22 OFFLINE   uforia

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Posted November 28 2006 - 07:00 PM

I know this is another question about subwoofer placement, and I will be doing the test of putting the subwoofer in my listening positioning and moving around the room, but would still like some opinions and where you THINK it would best perform (incase my judgement is abit off) Posted Image

Below is my ht room, which is fairly to scale (its not that big) so the two spots in the corners would literally put the subwoofer maybe a foot away from the couch, thanks Posted Image
I would think 1 and 2 in the rear corners would be loudest but maybe abit boomy and close to listening position? Or maybe 4 is a good comprimise, still in abit of a corner and not so close...

Posted Image

#2 of 22 OFFLINE   John Garcia

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Posted November 29 2006 - 06:08 AM

Try to pull the couch out from the wall if you can; couch against the wall is never a good thing. I'd use 1 or 2 first, then 4, not 3. 1 and 2 should not be booomy if properly calibrated. If it is, you can always move it away from the back wall until the boominess is reduced.
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#3 of 22 OFFLINE   douglas-b

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Posted November 29 2006 - 08:22 AM

I agree, you should start with a corner that is closest to your seating position.

#4 of 22 OFFLINE   uforia

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Posted November 29 2006 - 09:01 AM

Thanks, I'll try 1 or 2 first...as the listening position is right in the middle of the room/couch 1 or 2 shouldnt matter much...?

#5 of 22 OFFLINE   John Garcia

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Posted November 29 2006 - 09:34 AM

It may make a difference, but that is pretty much impossible to say one way or the other without trying it.
HT: Emotiva UMC-200, Emotiva XPA-3, Carnegie Acoustics CSB-1s + CSC-1, GR Research A/V-1s, Epik Empire, Oppo BDP-105, PS4, PS3,URC R-50, APC-H10, Panamax 5100 Bluejeans Cable
System Two: Marantz PM7200, Pioneer FS52s, Panasonic BD79
(stolen) : Marantz SR-8300, GR Research A/V-2s, Sony SCD-222ES SACD, Panasonic BD-65, PS3 60G (250G)

Everybody is a genius, but if you judge a fish by its ability to climb a tree, it’ll spend its whole life believing that it is stupid.” – Albert Einstein

 


#6 of 22 OFFLINE   chuckg

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Posted November 30 2006 - 09:20 AM

Looks like an ineresting experiment to me! I have heard some say that putting a sub in a corner opposite an opening is a bad idea. But, I think that room geometry would make a huge difference, too. Just out of curiosity, what is in the bottom left "tunnel" leading out of the room? A long but enclosed hallway could make for some interesting bass boost effects....
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#7 of 22 OFFLINE   uforia

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Posted November 30 2006 - 10:04 AM

Thanks for the replies, will be trying this weekend to test and let you know how it goes Posted Image

The bottome left is a little corner to the front door and the bottom right is a hallway opening into the rest of the house.

#8 of 22 OFFLINE   uforia

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Posted November 30 2006 - 08:12 PM

Also just another quick question. Is there a formula to work out how far apart my front speakers should be if I am about 10 feet from them? This is for HT only, thanks

#9 of 22 OFFLINE   Chu Gai

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Posted December 01 2006 - 12:12 AM

1 or 2 because they're both long walls. 4 should suck.

#10 of 22 OFFLINE   amigohts

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Posted December 01 2006 - 12:14 AM

I thought it was recommendable to place the subw in the front.

I got it all wrong. Once more Posted Image (hey blame it on those ht mags that i read)

#11 of 22 OFFLINE   John Garcia

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Posted December 01 2006 - 05:36 AM

About the same distance apart as you sit from them.
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System Two: Marantz PM7200, Pioneer FS52s, Panasonic BD79
(stolen) : Marantz SR-8300, GR Research A/V-2s, Sony SCD-222ES SACD, Panasonic BD-65, PS3 60G (250G)

Everybody is a genius, but if you judge a fish by its ability to climb a tree, it’ll spend its whole life believing that it is stupid.” – Albert Einstein

 


#12 of 22 OFFLINE   Jeff Gatie

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Posted December 01 2006 - 07:25 AM


I've seen a spec (maybe from Dolby??) that says they should be at a 45 degree angle off a perpendicular to the sweet spot.

So at 10 feet from the screen, they should be 10 feet across.

Soooo, uhhhm . . . what John said. Posted Image

#13 of 22 OFFLINE   Andrew Pratt

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Posted December 01 2006 - 08:29 AM

There's some good advice on room layout on the www.dolby.com site

#14 of 22 OFFLINE   uforia

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Posted December 04 2006 - 09:09 PM

Tested subwoofer placement just now.

Results: Position 1 best/loudest sounding followed by position 2, then 3 and 4 both seemed equally crap Posted Image

Another alternate which would be in the middle for loudness/quality would be in the middle along the side walls between say 1 and 4 or 2 and 3...

#15 of 22 OFFLINE   William Ward

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Posted July 26 2007 - 08:13 AM

This seemed halfway to my problem. I am moving into a new house in the next couple of weeks and this is my floorplan http://www.crestwood...wellington.html.

As you can see the family room is quite large but has no corners. Any recommendations as to where to place my 10 inch Velodyne subwoofer? I had planned to place it in the listening area and walk around till I find the best response.
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#16 of 22 OFFLINE   Barry_B_B

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Posted July 26 2007 - 08:35 AM

Are those doors to the bedrooms? I would try somewhere along that east wall of the family room; the upper right LOOKS like you can close the door to the MB and might give you a close approximation of a corner.

#17 of 22 OFFLINE   William Ward

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Posted July 26 2007 - 08:53 AM

Yes, upper right corner leads to MB and the door can be closed. There is an archway in that corner and the other corner leading to the kids rooms. The SW is open and the NW has a larger archway heading into the kitchen. To the immediate right of that is a smaller archway with a small bar. TV will be along east wall, as well as the equipment. Listening area will be inside the text that gives the dimensions. Love all that space, hate the lack of a corner.
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#18 of 22 OFFLINE   tonys55

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Posted July 26 2007 - 09:59 AM

I have read that you can place the sub in the seat you will be listening from. Play some music and crawl around the room. When the you find a spot that sounds good, place th sub there. I don't own a sub and have never tried this but it makes sense.

#19 of 22 OFFLINE   William Ward

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Posted July 26 2007 - 10:28 AM

That was my original plan Tony.
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#20 of 22 OFFLINE   uforia

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Posted July 26 2007 - 10:32 AM

Just an update on my sub positioning. Initally position 1 sounded best, but I think that was due to the big bass boost I was getting and having a relatively cheap Sony sub Posted Image I have since upgraded to an SVS PB12-NSD and found that although it was loud in position 1 it didnt go that deep.....moved it to position 2 and got a MUCH flatter response and turned it up abit louder Posted Image Position 1 had a big peak at around 60hz and dropped alot below that.....positiona 2 was pretty flat all the way through Posted Image




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