Box Design For 2 12" Mmats p2.5

[u n k n o w n ? 0]

Hey well I was wondering if someone could design a box for 2 12" Mmats P2.5 its not for me but a friend and he keeps insisting on buying a prefab box or just having the guy build him one but the audio shops here suck ballz so I was just going to give my friend the design to take to the guy to build you know? Anyway Could you tune it to around 35-40hz or what ever you think would sound good with these subs? Im just tryin to help my friend not get ripped on a prefab.... Thanks!!!

Voice Coil (Ohms)

2 x 4

Fs (Hz.)

24

Vas (Liters)

117.2

Qts

.18

SPL (1W/1M)

89db

Power (Wrms)

500

Mounting Depth (inches)

6 1/4

Hole Diameter(inches)

11 1/16

Speaker Displacement (cuft.)

.13