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rain377
10-09-2007, 08:52 PM
I've heard a lot of pros and cons to common and seperate chambers but it always seems to get back to bracing. Is bracing really that important? wont a little bit of box flex help the sound out? I've always used bracing because i was told it was the right thing to do but i'm just wondering.

Rich B
10-09-2007, 08:56 PM
Whether you need bracing or not depends on the thickness of the wood the box is made of and the size the box will be.

Thick & small = no bracing usually

Thick & large = bracing would be advised

Thin & large = brace that muther!

rain377
10-09-2007, 08:57 PM
But is box flex that dig of a deal? i've never dealt with it before, but what does it affect?

Lakota
10-09-2007, 09:00 PM
But is box flex that dig of a deal? i've never dealt with it before, but what does it affect?

It can affect your score and possibly damage the box or equipment.

Rich B
10-09-2007, 09:02 PM
But is box flex that dig of a deal? i've never dealt with it before, but what does it affect?


It can be if you're using high xmax subs with high powered amps.

The box wants to act like a sub's cone, it will naturally want to vibrate with the low frequencies (where the larger box will make this even more noticable) , so if you can add bracing it might be a good idea.

rain377
10-09-2007, 09:05 PM
So if i build a box of 3/4" mdf 40" wide i would want to brace it so the box wont fall apart? or will it effect the frequency output of the sub? i know if you brace the box it should get tighter response just from the sturdier box.

Rich B
10-09-2007, 09:09 PM
@ 40" wide, you definately want to brace that box.

matrxx dude
10-09-2007, 09:12 PM
no doubt,and it is not that hard to do

rain377
10-09-2007, 09:12 PM
Would you recommend 3or4" braces going across or basically putting in a divider with the center cut out. meaning taking a piece of mdf and sizing it for a divider but just using the outside 4 inces all the way around? a pic would be easier but i hope you know what i mean.

matrxx dude
10-09-2007, 09:13 PM
like for me i brace for weigt purposes and box flex,just think the top of my box is supporting 240lb's of subs.

mlstrass
10-09-2007, 09:31 PM
On a panel that big I'd brace every 12-16" inches. Either strap or window braces...

Lakota
10-09-2007, 10:12 PM
On a panel that big I'd brace every 12-16" inches. Either strap or window braces...

Even better is threaded rod. It has high tensile strength and doesn't cause as much turbulence because it takes up less room.