View Full Version : NEED Help with Box design 2 12" FI BL's

11-22-2013, 04:08 PM
Hey guys thanks if your looking at this page and willing to help, I had a box designed previously for my last car on here but have recently changed vehicles and need a new design, all help is appreciated!

Vehicle : 03 Chevy Tahoe
Location in the vehicle: Behind second row seating
Space available (Length x Width x Height): 47" x 18" x 33" (18" is from the complete open available space in the front all the way to the back hatch, and i've read that if i do that then there wont be any space for air movement out of the port.... so the width might have to be smaller than 18"?)
Subwoofer make and model: FI Bl's
Subwoofer Size: 12"
Number of Subwoofers:2
Type of Port (Kerfed, Slot, Aero, etc.): Slot
What type of music do you like?: Rap, Hip hop, Decaf, generally anything similar to that...
Is your goal SPL or Everyday Music?: More everyday music, I go to a few competitions a year, but subs do have the "daily" option and not the "spl" option from FI
Tuning Freq (Hz): looking for 32hz
Questions: I would love for the design to have the Subs up with the port firing back, I want them to share the same chamber and have the port running down the middle between the two.
Thank you!!!!

11-26-2013, 07:48 PM
Anyone out there willing to help please?

11-27-2013, 03:13 AM
Start off using this with your measurements...
RE AUDIO - Box Calculator (http://reaudio.com/box.php)

Find out XMAX of your subs, input that data here to determine port length/ port area...
Car Audio - PORT Size Calculations and Formulas for WOOFER and Subwoofer BOXES (http://www.carstereo.com/help/Articles.cfm?id=31)

and download torres to check numbers...
Torres' Box Tuning Calculator - Updated 8/18 - Subwoofers / Enclosures - SMD Forum (http://www.stevemeadedesigns.com/board/topic/38791-torres-box-tuning-calculator-updated-818/)

It's easy bro.