Will 3/4" MFD be fine?
If given a choice between thick walls with little bracing, or thinner walls with more agressive bracing, which would be better?

thanks,
Gar.

When I've built sub boxes about that size, I've used 3/4" MDF, internal bracing and doubled up the baffle holding the driver. I'm not sure the last was acoustically necessary, assuming lots of bracing. It was more that, if the driver is inset into the baffle (which it was), you wind up having the driver screwed to not much MDF behind it unless you double up.

It's hard enough moving the #$%^$ things with one side doubled up. I can't imagine doubling up all six sides. Nor have I ever used MDF stock thicker than 3/4".

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• Tempest Construction Pix

I'm thinking 3/4" with good window bracing is all I need. Good point about the front panel. Once you cut for a flush mount, there's not much left to secure the driver.

I was surfing last night and saw some examples of extreme DIY cabinets. One guy built his speaker with three layers of 1/2" MDF. The middle layer was more of a spacer to allow him to fill the core with sand.

thanks,
Gar.

• 2 Pi Tower Construction Pix

Thanks.

Good point. and, the dribble that acompanies the use of "heavy, bigger, better" materials in place of workmanship is a never ending road of pure fiction.