dual subwoofer placement

[fuzz092888]

The article says that those are approximations based on room dimensions only, without taking furniture into account. You can do that yourself my downloading REW and then using the room modal response feature where you set your main LP and then you can move your subs around the room. You need your room dimensions and the approximate F3 of your subs in order to get the most accuracy, although it still won't take into account the other things I mentioned.

 

[droseofc]

Ya no I get that what would be best for one could be worst for another. Im saying based on his findings which was best placement according to his graphs. Idk how to read those

 

[fuzz092888]

Ya no I get that what would be best for one could be worst for another. Im saying based on his findings which was best placement according to his graphs. Idk how to read those

First, those aren't straight frequency response graphs. The first graph is showing where the peaks and nulls will be, and their magnitude with respect to frequency. The second graph is showing approximately where those peaks and nulls occur in the room (L X W). None of this takes into account furniture etc. Plus all graphs will be slightly different for a room of different dimensions.

The "best" depends on room orientation, room dimensions, and the way the seating is oriented. IMO, based on the room orientation and the graphs given my preference would be with the subs placed at the mid point of the side walls. Like I said, all this is moot, real world unless you're setting up a customized HT room where more variables will be under strict control.

 

[droseofc]

sub crawl it is. I really do thank you tons for words of wisdom and I now know this kind of stuff can not b learned in a day or two. Someday though. Ive moved them twice since then. So many options. Right now im gonna see how they sound one on each side of couch. Inevitably will do sub crawl, just trying easiest spots now. Thanks again I really do appreciate it

 

[fuzz092888]

sub crawl it is. I really do thank you tons for words of wisdom and I now know this kind of stuff can not b learned in a day or two. Someday though. Ive moved them twice since then. So many options. Right now im gonna see how they sound one on each side of couch. Inevitably will do sub crawl, just trying easiest spots now. Thanks again I really do appreciate it

Maybe just start with the sub crawl and some basic frequency response graphs.


EDIT: no problem, come back with more questions and your results from the sub crawl.

 

[droseofc]

Havent done crawl yet, kids are sleepin but hopefully tomorrow will have house to myself for a bit and do it, although the way it is now is my fav so far. Same setup as original pic but put sub on same wall as other so wall with the couch sub by front right stayed and other sub on other end of couch just before opening. Only have tried a few sub runs and 30hz tone from main chair was something I hadn't experienced quite like that til now. Switched the rear sub to 180 which in this setup seemed to improve twice as much

 

[gene]

Sub crawl is optimized for a single seat only. Dual subs help to get better bass for all seats if properly placed. Stacking 2 subs doesn't help for multiple seats as it acts as a single sub but plays louder.

There are some great placement and setup guidelines in this article for dual subs:
Home Theater Multiple Subwoofer Set-Up & Calibration Guide | Audioholics

Also in about 3 weeks our EBook business will launch and you can download very concise printable instructions.

 

[droseofc]

Ya I read that about dual subs as well. Seemed like half said it doesn't work and other said it did. I ended up moving them in spots that would be doable and after about 5 or 6 variables im (hopefully) done at middle of front wall and middle of back wall. According to a few articles this would be considered a good option for rectangle room.

 

[droseofc]

Sub crawl is optimized for a single seat only. Dual subs help to get better bass for all seats if properly placed. Stacking 2 subs doesn't help for multiple seats as it acts as a single sub but plays louder.

There are some great placement and setup guidelines in this article for dual subs:
Home Theater Multiple Subwoofer Set-Up & Calibration Guide | Audioholics

Also in about 3 weeks our EBook business will launch and you can download very concise printable instructions.

Didn't read your signature until after I replied. Not sure how common it is on here I'm fairly new on here but wanted to thank you and it says alot about the site that you are involved with the users.

 

[gene]

Ya I read that about dual subs as well. Seemed like half said it doesn't work and other said it did. I ended up moving them in spots that would be doable and after about 5 or 6 variables im (hopefully) done at middle of front wall and middle of back wall. According to a few articles this would be considered a good option for rectangle room.

Front/back mid wall for a rectangular room is a great choice. Now just level match and bass manage your speakers/subs and you should be good to go.

welcome to the forum!