Bracing?

[ggerla]

Hi all
I'm ready to start to buid my project but I have a critical doubt. I need bracing?

My cabine is in MDF 0.75". External dimensions are: height is 13,5", width 11,5" and depth 9.5"

 

[Sonce]

Looks like you are building a subwoofer enclosure for a 8" woofer, so bracing is a good idea.

 

[ggerla]

Looks like you are building a subwoofer enclosure for a 8" woofer, so bracing is a good idea.

Sorry I forgot to say that it is a 2 way project with a 6" woofer...
But yes, dimension are like a subwoofer enclosure.

 

[Ron E]

Make a brace full of holes from a sheet 12x10 and glue it to the walls just over halfway back from the baffle It will be very well braced. If you want, you can glue a 1.5" high rib on the back panel just off center...

 

[ggerla]

Make a brace full of holes from a sheet 12x10 and glue it to the walls just over halfway back from the baffle It will be very well braced. If you want, you can glue a 1.5" high rib on the back panel just off center...

So it is a vertical panel (with hole) parallel to buffle.
Thanks

 

[JShadzi]

Here is a cabinet I'm working on currently, this is a high amount of bracing obviously but if you did one or two elements like this you'd be fine. Ron E's suggestion is a good one.

Key is to reduce and dampen cabinet wall resonances as much as possible.


Sent from my iPhone using Tapatalk

 

[DickHertz]

Cabinet construction

If you haven't already built the cabinets, some design software might be helpful.

Jeff Bagby's Software Page

The Woofer Box & Cabinet Designer and Baffle Diffraction programs will be especially helpful. I'd use at least on brace, placed vertically about 2/3rds of the way back from the front, that would amount to one sheet of 1/2" MDF or Baltic Birch with a large oval cutout in the center. Leave about 1" all the way around so there's contact with the sides, top, and bottom of the enclosure.

 

[JShadzi]

I'd use at least on brace, placed vertically about 2/3rds of the way back from the front, that would amount to one sheet of 1/2" MDF or Baltic Birch with a large oval cutout in the center. Leave about 1" all the way around so there's contact with the sides, top, and bottom of the enclosure.

Dick great advice, i'd add to keep a central strut across the approx middle of the opening to add a substantial amount of dampening vs. a complete opening.

Can easily be located between the woofer and tweeter. Two large circular cutouts in the bracing panel is also a great way to go.