Need help (building box for 2*sa12

[jer 0]

1. Sorry for my poor english (i'am from russia)

I need help to build ported box for 2*sa12 (1 ohm connection) amp - Rockford fosgate t1500-1bd, i'd like port to be tuned to 40-42 hz

Can anybody help me with dimensions of box and dimensions of port. Thank you very much.

In russian discusion a can not find any info about that

[gcs8 10]

Mounting Depth = 6.5"

Cut-Out = 10 15/16"

Displacement = 0.14 ft^3

Overall OD with Gasket = 12.5"

Enclosure Suggestions:

1.75 ft^3 ported tuned to 30 Hz -- F3 of 26 Hz

* Tune higher and use a smaller box for more SPL oriented setup (Use 1 - 1.5 cubes)

* Enclosure can be as big as 2.25 ft^3 with lower power levels

1.00 ft^3 sealed -- F3 of 44 Hz

* For SQ and space limited applications

[BigBodyLexus 3]

I would tune it a little lower (between 30-35Hz)

[jer 0]

I can find nobody to translate what i d like to say. What dimensions of box and port needed to tune it to 35 hz? I am listening club and electro music, its ok with that way tuned box (35hz)? Thanks for answers

[tyoung515 7]

jer if you can give us the maximum dimensions of your trunk i would be happy to design the box for you

[jer 0]

tyoung515 thanks, i need just enclosure volume, area and lenght of port for 40-42 hz tune, my car is mazda 3 hatchback

[tyoung515 7]

tyoung515 thanks, i need just enclosure volume, area and lenght of port for 40-42 hz tune, my car is mazda 3 hatchback

well i would try 3 cf@40hz, port that is 10"t by 3"w will need to be 11.75" long, hope this helps!

[jer 0]

thank you very much, tomorrow i get the subs, and start building

[jer 0]

its normal?