Sonotube woofer enclosure?

[mbeals]

I want to add a sub but don't want to spend a lot on it. I'm not looking for something that shatters windows, just something that fills in the lows and sounds good.

My idea is to build a sonotube enclosure mounted horizontally just behind the rear seats (like a nitrous tank). However, I have no clue about tube length/diameter or woofer size. I'm not even sure what frequency to tune for. I've heard of 2 approaches to this: a single driver at one end with a sealed tube or one driver at each end with a port in the middle.

Has anyone done this in their car? Any words of advice?

[Ryan from Ohio]

Just build a regular box and correctly aim the subwoofer.

Firing a subwoofer off to the side will loose potential.

[MattismodderX]

sonotubes are pretty slick though

[mbeals]

Yea, and they give great sound quality, take up zero room and are dirt cheap to build

How much loss are we talking? I think I want to run a 10" driver in a 12" tube. With about 30" of space to work with, I could probably even install a divider and run two sealed chambers with 2 drivers. My other thought was to port it and direct the port towards the back of the seat.

Like I said, I'm more concerned with having nice sounding bass (tight, and clear) then having a ton of power.

[Ryan from Ohio]

I dont know what magical properties a round tube will yield...

The bottom line is if the sub isnt aiming to the rear or to the front you will loose a little bass.

If you dont want to take up much room buy a shallow mount sub, build a slim fitting box... Done deal.