2 FI BL 12's.... NEED BOX HELP!!!!!

[Nsjabauanabagaoakddb3 10+ year member]

Going on a IA mono 20.1

2 FI BL 12"s

slot, square port.

flush mounted.

what size port and box? - i though around a 6" wide port and 7 cubes

should i double baffle and triple baffle the sub mounting side?

or

is is bracing all i need?

if so...

what type of bracing?

max dimensions are (this is including the space i need for 3/4 mdf [take into mind the baffeling as it subtracts from the numbers even more]):

width (driver side to pass side) - 40

depth (ground to roof) - 23

length (headlights to tail lights) - 20

Click to read more...

 

[RAM_Designs 5,000+ posts]

If you plan on giving them their RMS wattage, stick to 2.25ft^3 each with a tuning in the lower 30's. Overall volume before sub and port displacements will be about 6ft^3. You may or may not have to double up the mounting baffle, just depends on how you have everything laid out.

 

[jrouter76 10+ year member]

how well do those BLs sound in the proper box ported as the OP stated ?

 

[Kangaroux 5,000+ posts]

how well do those BLs sound in the proper box ported as the OP stated ?

You're asking a very generic question lol.

 

[Nsjabauanabagaoakddb3 10+ year member]

thanks man

 

[Nsjabauanabagaoakddb3 10+ year member]

lol agreed... but i already drew it up on sketchup... gunna build it tomorrow... well see how it sounds

 

[Nsjabauanabagaoakddb3 10+ year member]

i put them in 7 cubes at 36 Hz. 6" wide port, triple baffled the mounting layer and doubled all the rest. its going to be a heavy ***** but solid. im going to skip on bracing because oh how my joints are set up. i think i will be fine with wood glue, pressure and a finish nailer. pm me your number and ill send you pics as i build it.

 

[surreal 10+ year member]

You put two strong 12s in a 7 cube box? Ripple city. Gonna sound like ish and be super boomy with an awful low end peak.

 

[RAM_Designs 5,000+ posts]

You put two strong 12s in a 7 cube box? Ripple city. Gonna sound like ish and be super boomy with an awful low end peak.

This. I personally wouldn't go over 4ft^3 for a pair. The thing that ***** about these low Q and Vas woofers is the need for a smaller box and a lot of power to get a decent response curve out of them while keeping output high. Granted, most people aren't looking for a smooth response if they're getting these kinds of subs.

 

[Buck 5,000+ posts]

4.5 cubes tuned to 30 hz with about 60 square inches of port.