sub in the couch

**jacoviii** · **10-16-06, 12:40 AM**

can i put a 10"x60"x22" box for 4 12" in the bottom of my couch
down fire rear port

**adogand6kids** · **10-17-06, 01:14 PM**

I guess my answer would be, "yes". That assumes that you are going to custom build this couch. Is there a reason you want to put it in your couch? That will increase the stress / wear on the sub box over time.

**jacoviii** · **10-17-06, 01:43 PM**

yes no room along the walls no ib room
my couch is a love seat and one side is a chase you know the longe type http://www.la-z-boy.com/ourfurniture...t.aspx?pid=149

it is holow under it no spring

**adogand6kids** · **10-18-06, 10:45 AM**

Again, there is no reason you can't put a sub box in your couch. You will find differing opinions about the sonic character of keeping the sub close to the sitting position. The "biggest name" I have heard of who supports the idea is Dr. Poh Hsu of Hsu subwoofers.

One concern I would have include how high off the ground your couch sits. You will want around 3-4 inches of floor clearance for your down-firing sub. A second concern is about the number of woofers and the size of your enclosure. The projected enclosure is 7.7 cubic feet. That amounts to less than 2 cubic feet per driver. This seems a bit small to me. Have you modeled this planned box? Most recommendations I can remember suggest around 3 cubic feet of enclosure per 12 inch driver. I have no experience with sub modeling programs, but there are others on this site who do. Perhaps one of them could comment on the proposed size of the enclosure or suggest a modeling program to let you "see" how the proposed sub would perform.

**SteveCallas** · **10-18-06, 11:43 AM**

2 cubic feet per driver means you will want to go sealed, not ported. Combined with near field placement, the low end is going to be severely lacking unfortunately

**dynamowhum** · **10-18-06, 11:56 AM**

I would think you would get tired of the couch shaking every time a bass note hit would eventually get old. Don't get me wrong as an IB user I like my bass but it does not shake my seating position with every bass note either. Just a thought have you thought about making a riser for your couch and putting the subs in it?

**Darren** · **10-18-06, 12:02 PM**

Yeah, I'd get irritated with every bass note shaking my back side... Have you thought of building one inside a coffee table or an end table? Many have done this. That would be MUCH better.

**Mark Seaton** · **10-18-06, 12:08 PM**

Um.... You still have maybe 150-160L of space available. This should be plenty to get some respectable performance from. One of the first questions to answer is how much power you have available. You might find a pair of 15" drivers to work even better for the same money, or allow you to get a bigger amp. The other question at hand is how large is your room and how well enclosed is it vs. a big, open floor plan.

**Mark Seaton** · **10-18-06, 12:11 PM**

As a few others have mentioned, one issue here is that you WILL notice that the sub is not in front of you with it so effectively shaking the couch. You also would want to make sure you have the distance setting for the subwoofer adjusted appropriately in the receiver. This will give a bit of a "shaker" effect that some like and some hate. Give this some consideration as well.

**jacoviii** · **10-18-06, 12:33 PM**

i thought i would leav about 1"to1.5" between the couch and the box and thought maybe putting heavy foam kind of like that memory foam they make the beds out of

i do have two 15" treo sub just thought 4 12" would work
heres a link to the 15 http://www.treoonline.com/ssx.html

**jacoviii** · **10-18-06, 12:41 PM**

but what you are saying is that the sub would sound better up front or farther in the rear behiend the couch

**Darren** · **10-18-06, 12:42 PM**

Better up front, not so much in the rear... Regardless of how low your crossover point is you can still localize the sub when it is behind you...at least I can and many others can. It feels detached from the rest of the sound stage when behind you in my opinion. I'd try for the coffee table or side/end table.

I'd think that if the sub was built into the couch you'd feel the bass much more than you'd hear it... I prefer to hear it and feel it

**dynamowhum** · **10-20-06, 02:20 PM**

I agree with Darren if an IB solution will not work for you. Just make sure you build it dead so your stuff that you place on top of it doesn't start dancing on you while you watch WOTW.

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