Box design help

[Fisherguy222]

i have a 1998 volvo s70 my max dimensions are 18” height, 30” depth and 34” width i have a 2004 Rockford fosgate t2 15 here is the data sheet https://www.rockfordfosgate.com/rftech/library/2004/5_Subwoofers/T215D2-T215D4-TS.pdf

i would like to tune it to 30-33 hz

 

 

 

[bcbrassard]

How much power?

[Fisherguy222]

1400 rms

 

[Joe X]

Here is a suggestion, power: to sub rated, amp subsonic filter to 28Hz, minimum port clearance 3 1/2", figure is just an assembly guide:

NOTE: If building outside you need to build a cardboard dummy box to test fit in it's way inside.