12 inch size

• Enclosed subwoofer with dual 12-inch speakers; measures 27.5 x 14 x 15 inches
• illumiNITE technology constantly illuminates the speakers with blue LED lights when in use
• Handles 600 watts RMS power, 1100 watts peak power
• Carpeted enclosure, plexi subwoofer viewing window
• Dual 12-inch Low-Q optimized dri

Size 24 or 27. I found this on the AutoZone website. You can too.
Good luck!

64 inches times 33 inches times 24 inches is 50688 cubic inches.

One foot is 12 inches, so one cubic foot is 12 inches times 12 inches times 12 inches or 1728 cubic inches.

50688 cubic inches divided by 1728 cubic inches per cubic foot is about 29.3 cubic feet.

600 watt rms 1200 peak you want bout 2x the power so go with a 2400 watt mono and turn it bout 3/4 of the way up and it should sound great

According to Wiki Answers:

http://wiki.answers.com/Q/How_do_you_convert_points_into_inches

there are 72 points per inch.

So, a '12-point' font will be 12/72 of an inch, i.e., 1/6 (not 1/8) of an inch.

Length (L) = 31.9 cm = 12.6 inches (approximately 12 1/2 inches)

Width (W) = 51.5 cm = 20.3 inches (approximately 20 1/4 inches)

Depth (D) = 19.7 cm = 7.76 inches (approximately 7 3/4 inches)

Judging from the "10D", that most likely means 10 watts. 6.5 inch speaker, probably 8 ohms. Most amps of this nature have 8-Ohm speakers.

Their 12-watt and 15 watt amp have a 6.5". Their 20 watt amp has an 8". The 80 watt has a 12".

Hope this helps.

look on the bottom of subwoofer should say like olm2412 olm1612 olympus the 1612 is the rms and speaker size 2412 is 2400 rms and the 12 stands for 12 inch subwoofer.i think thair is only 2 modles . also u have 4 u would need a 10,000 rms amp if thay are the olm2412s or 6,000 rms amp to push 4 olm1612. as far as box building info i think you should call maxxsonnics. 847-540-7700 talk to mike