Looking to build a home audio sub box

I have a couple of Orion XTR 12" subwoofers kicking around the house and since I dont feel like going out and spending money on home audio subs, I figured I could just make something with what I have..

I will be useing MDF board to build whatever it is I decide to make.. I want something that can handle solid bass and doesnt sound loose and flimsy, something that sounds tight.. Some of my music is pretty speaker demanding. I also would like it to be able to handle lower tones well also..

I have looked around a little recently at different ideas and still am unsure what I would like.. What is your opinions? I could build either one larger box for both speakers or two smaller boxes.. I came across this one sub box design called the "home wrecker", anyone ever heard of it?

TIA for your assistance.

You'll probably be working trial-and-error methods with that unless you are capable of measuring those subs' physical and T/S parameters.  Do you have any idea of what was published for these?  Do you know of a link that you can share with the forum?

If you don't have anything, you could start with a rough box at least 6 cu. ft.  Buy a plate amp of maybe 500 watts or so from Parts Express, depending on what power these will take.  Wire the two speakers to somewhere between 4 and 8 ohms, depending on their configurations.  Cut two speaker holes in one baffle and form a rough box, sealed.  Try it at 6 cu ft and see what it does using test tones.  You want the sub range from about 25 to 100 Hz to play at about the same level through every frequency although it should still probably drop lower in amplitude under about 35 Hz.  If you get something crazy like the subs are flapping at 35 Hz or the tones are too loud in some range or another, reduce the box size to 5 cu ft and try it.  This box should be a test box with one end adaptable for moving.  You would move the end in, screw it, and caulk the seam.  Lots of time involved with trial and error.

After you've decided how much air space you should give them, build a nice enclosure and leave the carpet for the car.  Finish it with something else for the house.

The problem with using car audio subs in the house is generally car subs have too high an Fs and Qts numbers.  They are designed to produce peak SPL in the 50-70Hz range and to be inefficient so very small enclosures and very high power amps can be used.  In a home theater, you want the lowest Fs and highest efficiency possible, as you want those 20-40Hz rumbles required for big movie soundtracks.  Plus in a room you want to be able to use much smaller amplifiers than in a car because of expense and heat and because of your electricity bills.  :)

That being said, you can certainly use the woofers you have if you choose.  Like Steve said you'll need to obtain or measure the T/S parameters of the sub (at the very least you'll need the Fs and Qts.  Perhaps you can get this info by emailing Orion?)  Then you can model the subs in software like WinISD or Unibox and see how large and what type of an enclosure you might need.  Then it's up to you to decide if it's worth the effort to go for it, or if buying an HT sub might be a better idea.

Dayton subwoofers are the house-brand of Parts Express.