The importance of thin-wall cabinets for small speakers, any solutions?

[ojg]

That's great 🙄. Saves you the trouble of buying cheap plywood with voids.

Not quite the same, as the voids would need to be open to the inside in order to count towards the box volume.

I took a piece of 3/4" MDF and made a grid of blind flat bottom plunge cuts on it

This is probably a better idea. A quick calculation shows that 20mm diameter holes on 25mm centers would remove 50% of the material. So 6mm deep cuts in 10mm boards would result in the equivalent internal volume of using 7mm boards.

There's a theory that a flaccid panel at rest vibrates easily but pulled into tension it's much stiffer.

That was the point I was trying to make in an earlier post about prestressing the boards.

The matrix style bracing is probably one of the best methods, and it should be possible to combine all three to create a stiff cabinet with thin materials.

It helps that small 2-way speakers will have limited bass extension and therefore less inside air pressure. This doesn't apply to small subs with longthrow drivers ofcourse but that's a different discussion.

 

[sreten]

Hi,

Clever wall construction and clever bracing is the ultimate for maximizing
the external volume to effective internal volume ratio for small speakers.

If your really clever you can get this beyond 1, with optimal stuffing.

rgds, sreten.

All small hifi speakers should be built sealed ........