bracing inside box

[rain377 10+ year member]

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.

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[Rich B 5,000+ posts]

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+ year member]

But is box flex that dig of a deal? i've never dealt with it before, but what does it affect?

 

[Lakota 5,000+ posts]

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 5,000+ posts]

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+ year member]

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 5,000+ posts]

@ 40" wide, you definately want to brace that box.

 

[matrxx dude 5,000+ posts]

no doubt,and it is not that hard to do

 

[rain377 10+ year member]

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 5,000+ posts]

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 5,000+ posts]

On a panel that big I'd brace every 12-16" inches. Either strap or window braces...

 

[Lakota 5,000+ posts]

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.