Before you build this do your research on speakers because mines back in construction. Make sure u get a strong enough power supply and the right Amp. My box is highly under powered and i would suggest better stuff but im cheap.
I left the cost blank next to the items i did not have to purchase
supplies u need:
2x 12" subs
2x 5" 1/4 tweeters (speaker grill/protective plate usually comes with speaker)
250 Watt Computer supply unit (this is a minimum wattage and under powers the amp)
Audio cable that transfers 3mm headphone jack into appropriate audio fittings for your amp
Switch (to reset computer supply unit just in case it needs to be reset it because the amp withdraws all the power)
Door filler strips - $6 Ace (optional, i did this so i can remove my face plate just in case i need to replace my speakers and keeps a tight seal around box)
2x Flat black paint - $6 Ace Hardware
4x8 Particle Board - $20 Home Depot
4x8 wood paneling (of your choosing may cost more depending on what you choose) - $20 Lowes
400 Watt Amp - $55 walmart
This was a build that was cheap and i would highly suggest a stronger amp and Power supply unit if your looking for some serious power.
Make sure you do your research i recently blew my tweeters which cost me an extra $28 because of the power supply and the amp. Do your research!!!
If you need instructions just ask and i will do my best to remember. once again i was not planning on posting anything about this but i felt that it was a cool design and can be changed to match your room and makes nice furniture.