How to modify speaker box design if panel width is changed?

Hi,

I'm trying to build a speaker enclosure using Fenlon 7 design (https://www.markaudio.com/wp-content/uploads/2021/08/Fenlon-70.png) where the panel width is 15mm.
The standard width of MDF that I can get where I live are 6 / 9 / 12 / 16 / 18 / 25 mm.
If I use 16mm panel instead of 15mm, what changes should I make?
FYI, I'm going to use Mark Audio Pluvia 7.2 HD driver with the enclosure.
Any advice would be greatly appreciated.
Thanks.
 
It shouldn’t make any difference, except your speaker will be just slightly larger. If you start with those 15cm cuts, the internal width and depth will be according to plan. The final sections should be cut based on the actual measurements of your partially finished box anyway, not the plans. They will be slightly larger.
 
Agreed it is too insignificant to make it worth concerning yourself. If it were critical you could go a couple mm thicker, then bore out some material with a spade on inner planels to displace that extra material.

You must monitor the sawdust to know when it arrives on spec. Kidding. If you don't note that theres always one who takes all literally.
 
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