Bracing Inside Sealed Boxes?

i have a verication question.... i m planning to build a sealed sw box in my back seatwell of my 2001 mustand...its gonna be fiberglass/mdf box.... just wondering if i can have like panels inside the box (like a mdf piece to form a frame to brace the box)?    wouldn't that just add volume to the box? would it effect the sound of the bass? will that cause ne standing wave problems?

all that would do is split the subs into 2 different chambers and it should sound better---- 1996 Chevy S10 ----

1 Lightning Audio S2.600.2 Amp

2 Lightning Audio 12" Subs

1 Lightning Audio 1 Farad Cap

Your enclosure SHOULD have braces inside to help keep it rigid.  As long as the braces have openings in them, they do not divide the enclosure into two chambers.  Be sure you take the volume of your braces into account when calculating the total sealed enclosure volume as you do not want to undersize (or oversize) the enclosure by more than 10% off the "optimum" for your sub.  And yes, the shape of your enclosure can affect the sound quality, but with subs the effect is minimal.  A good strong well-braced enclosure that will not flex and that has the proper internal volume (cu ft) is much more important than the internal or external shape of the box.

Good replies from DYohn, an mdf master I imagine. I take mdf a step further, it is extremely porous and needs to be sealed. I spray paint the inside of the box with a minimum of two coats to help seal the box, if you r fibreglassing, then you can also use the leftover resin to accomplish the same thing.Top Secret, I can tell you but then my wife will kill me.

thanx for all the good info.... forbidden - i was thinking of using like a laytex paint...but wat do u recommend? would the resin be beter then the paint?

We use spray bombs, they work great, if you have left over resin though, use it,and put some extra glass along the seams of the box while your at it.Top Secret, I can tell you but then my wife will kill me.

cools..thanx for the advice.