View Full Version : Making sealed box for IDQ V2 D2, need some help :)

12-06-2009, 06:24 PM
Ok, this woofer needs 1 cu.ft of air space. I went and measured inside the trunk to see what I could fit. Here are my parameters.

16" W x 13" H x 12" D= Total external volume of box
Total internal volume of these measurements is 1.03 cu. ft inside the box.

Mounting diameter = 11", is this exactly where I should cut the circle in the center of the box?

Mounting depth = 5.75, so the magnet should clear about 4.7" in the internal volume. Speaker should fit with no problems.

3/4" MDF.

Is all of this correct? I wanna make sure the woofer has a proper enclosure for best performance!

12-06-2009, 06:54 PM
Sounds fine... after subtracting speaker displacement you'll be right around .95 ft^3. Within rec. specs.

12-06-2009, 06:54 PM
You should be fine,after displacement you're looking at .96cft. of space.If you wanna be **** you can experiment with some polyfill to get it to 1cft.As for the cutout,yes make it 11'' as recommended by ID.

12-06-2009, 07:11 PM
Yeah, I think .96 I wouldn't hear a sound difference?

12-06-2009, 07:50 PM
Actually I figured out how to get closer to 1.0 cu. ft.

15"W x 15" H x 11.5D = Inter Volume 1.05469 cu. ft.

1.05469 -.07 speaker displacement = 0.98 cu. ft.

Sound better? :)

12-06-2009, 08:25 PM
I doubt you will hear the difference between .96 and .98, but since you're making your own box, might as well get it as accurate as you can.

12-06-2009, 08:34 PM
What's a good size bit for pre-drilling the holes for the woofer screws?

12-06-2009, 10:40 PM
What's a good size bit for pre-drilling the holes for the woofer screws?

#6 bit w/countersink

Dr. Hertz
12-10-2009, 10:59 PM
Use the clutch on your drill, and don't over tighten, or you may as well not have predrilled your holes.

12-11-2009, 12:27 AM
get ready for a nice sounding sub:)