what can i do if my subwoofer doesnt fit in the box?

Question

i have just bought some 12" subs and boxes but the subs stick out less than half an inch my friend said just sand down the back of the box a little bit so they fit.....my question is can i just put some foam or something around the gap so i dont have to sand it down?

Answer 1

You can do the job right, or you can do it wrong. If you want the best results, do a quality job rather than just a "rig".

Answer 2

Subwoofer Spacers

Answer 3

Well honestly if your sub does not fit in without hitting the back are you sure it is the right size box? i mean if the cu ft. is off you can severly damage the sub, maybe ruin it completely. with that said, i would recomend doing the following.

revove the carpet around the opening say 2"
then cut a round spacer the same size out of 3/4" MDF
then glue/clamp ontop of the opening. let dry then mount the sub to that ring, will give you the cleance and the sub should cover most of the damage you did, but there will be some exposed new wood, you could paint it to closly match, or carpet the fron, just be sure where you glue it it is only wood on wood.

Answer 4

If you absolutely must go with the boxes you have, the only way to effectively correct this is to make yourself some spacer rings out of MDF (Medium Density Fiberboard). It's the same stuff the box is made of....looks like sawdust pressed into a board. What you'll have to do is buy a piece of 3/4" MDF and cut a hole in the board so your sub fits and then cut an outer profile of your liking. A square, circle, octagon, whatever you please....make this profile so that your end result will have at least 1 1/2" of material on each side around the perimeter. Next, evenly space pilot holes with countersinks (at least 8 of them for 12" speakers) around and through the "spacer" just big enough so a coarse drywall screw's threads barely "catch" and the head of the screw sits flush. Then, if your existing box has carpet on it, you'll need to remove the carpet in a 1/2" ring around the existing hole in order to prevent air leaking later. Next, test fit the piece you made. Once pleased with the fit, apply a bead of latex caulking to the ring of "bare" box that you made by cutting away the carpet. Then align your new "spacer ring" and press it onto the box, being sure the speaker hole in your spacer and the speaker hole in the original box line up AND THAT YOUR SPEAKER MOUNTING SCREW HOLES ARE NOT GOING TO HIT WHERE YOUR SPACER SCREW HOLES ARE!. Next, run 1" coarse thread drywall screws in snug with a drill and finish tightening them by hand in a caddy-corner pattern to evenly press down the ring onto the box. Ta-Da! You're done, your speakers now fit and you have no air leaks! Hope this helps!

P.S.- If you're going to carpet your new "spacers", I'd recommend putting on the carpet before you screw it to the box. Be sure you only apply enough carpet to just barely wrap to the bottom of the spacer on the outside edges or you'll have an air leak. NO carpet on the inside diameter where the sub goes!

Answer 5

You could invert the subs -mount them facing inwards.