is .25 cu. ft. too big ok for a 12 inch sealed?

[randyman78596]

setting up a 12" infinity 1262w , already have a 1.5 cu. ft. sealed box after displacement for it..recommended size is 1.25 cu. ft. ...i also have enough wood to build a 1.05 cu. ft. box after displacement...what would you do? its gonna be running off a 300 rms amp, infinity 1300a to be exact

[never knows best]

honestly I dont think you'll have any issues with the 1.5cuft with that little power.... could always throw in some polyfill....

and making a preexisting box smaller is easy... making it larger is the problem-

[Facekicker]

Polyfill makes the box "bigger" not smaller.

Your easiest solution is displace some air volume with something solid, like a few cut pieces of 2x4 or stacked & glued blocks of MDF and wood glue them down.

[never knows best]

Polyfill makes the box "bigger" not smaller.

Your easiest solution is displace some air volume with something solid, like a few cut pieces of 2x4 or stacked & glued blocks of MDF and wood glue them down.

lol @polyfill making the box bigger....

[Ahmed Johnson]

Polyfill DOES make the subs act as if it's in a bigger box so that is not good to add in your situation. Get some 2x4's or any spare wood. I've used books before without a problem so you should be good with anything solid.

[Ahmed Johnson]

Polyfill makes the box "bigger" not smaller.

Your easiest solution is displace some air volume with something solid, like a few cut pieces of 2x4 or stacked & glued blocks of MDF and wood glue them down.

lol @polyfill making the box bigger....

What is funny about this?

[OrionStang]

LULZ

[never knows best]

If you're using only a mild to moderate amount of filling, the enclosure volume will actually be reduced by the volume of filling used-

stuffing the enclosure in higher densities affects the thermal properties. At some point (~1lb/ cu ft for polyfill) the system becomes approximately isothermal as the filling absorbs and releases heat. This results in an apparent increase in enclosure volume because pressure is related to temperature and volume.

[never knows best]

another option would be to lining the interior with egg-crate/pyramid acoustical foam, effectively shrinking the box while also providing the benefits (although minimal at low freq) of the foam-

http://www.usafoam.com/acousticfoam/acousticfoam.html

[randyman78596]

i went ahead and built another enclosure that is 1.05 cubic feet after displacement so its .20 cu ft smaller than recommended..i picked up a 16 ounce bag of poly fil from walmart for damn 3.45$...do i just put it all in the box and call it a day?