Every sub needs a name, so this one is the Pedestal build, because that's what it closest resembles.....a pedestal.
This is the easiest,cheapest biggest bang for the buck build I could come up with for DIY. If you can do it cheaper then good job !
This has a super small footprint,21x21 inches, and looks furniture like, so it should also have a high WAF if painted to match/blend in. Also the height could be reduced very easily, although performance would suffer a slight bit. This is a sealed box, but could easily be ported with a little more work,not much if you used a round tube port, simply make another round hole.
This sub will beat any commercial retail offering you can get for the same price, you will need a amp to run it so that cost is up to you. The driver is rated at 600 watts rms......but many people run more to it. A capable amp can be picked up easily for 100 bucks used. Making the total cost for this at 300 bucks approx.
159.99 for the driver delivered
29.95 for a sheet of 3/4 MDF
5.00 for 2 tubes of glue
I had lowes do all the cuts on this so it would be as easy as possible with minimal tools needed. After having them cut the sheet down to size it would fit in a Fiat 500,smallest car I can think of, so no truck needed.
Only thing you will have to do is cut the circle for the driver, I paid 20 bucks for a cheap jigsaw, I have seen them for 5 bucks at yard sales and swap meets, maybe you can borrow one for free or worst case, find some one willing to cut the hole out for the driver for you. Running a jigsaw is super easy, anyone can do it. There really is no excuse not to build this, well maybe you can find one, but it does not get any easier than this.
It is a 20x20 box with a cap on the top and bottom, so cuts do not have to be perfect by any means. I had lowes do all the cuts and they did a pretty good job, it is not perfect, but I am going to assemble as is because it is not super critical in this build design. I could have easily had them trim a 1/8th inch of the one cut that was long, but choose to go as is to show how easy and forgiving this build is.
Here is a picture of the MDF after lowes cut it, very small package, easy to transport and deal with.
Little pile on the bottom and left is the scrap......maybe with a more complicate cut list one could make use of them, but they are not needed....