Need help 2 15in powerbass m-15 ported sub enclosure

[woodman_2011 10+ year member]

Vehicle : 2003 Kia Rio

Location in the vehicle: Trunk

Space available (Length x Width x Height): 36x36x15

Subwoofer make and model: Powerbass m-15

Subwoofer Size: 15in

Number of Subwoofers: 2

What type of music do you like?: Rock

Is your goal SPL or Everyday Music?: everyday music

Tuning Freq (Hz): 35 Hz

Closest specs I could find to my speaker

Gross Vb Internal 5.0 cu.ft

Circular Port 5” x 4.35” D

Fb (Box Tuning) 35Hz

F3 (-3dB Cutoff) 29Hz

Pe (Watts-Rms) 150-425

Subsonic Filter Setting If Applicable 30Hz

I put these specs into http://www.bcae1.com/spboxnew2

I found my trunk has a gross volume of 9 cubic feet which is one foot less then the recommended build. I need help with the box design if its fine going one foot under recommended if not i need new ideas. Any help would be greatly appreciated.

Click to read more...

 

[ThatChevyGuy 5,000+ posts]

They'll do fine in 6 cubes ported, i preferred mine sealed in 4.5 cubes. make sure you build the box to fit or build it in the trunk

 

[woodman_2011 10+ year member]

Thank you for the quick response. I could really use some help in the design of the box if you have time to help.