@timlub, have you ever considered using tiles to enforce a box? I'm just a hobbyist who likes tinkering and I wondered if including a ceramic or porcelain tile in the wall would make a big improvement without costing much since they're mass produced and available for low cost per unit. Say 3 layers of 1/4" mdf where there's a big square cut out of the middle layer that is filled with a super stiff ceramic floor tile. It'd add some time to construction but not much to materials and I'd think it eliminate almost all box flex in the low frequencies.
Showing 4 responses by jon_5912
If anyone was really curious about vibration control it'd be easy to add rigidity to a box. Go to Home Depot, but a pack of ceramic or porcelain floor tiles, and attach them to the flat spots on the speakers. Some double sided carpet tape might be enough to test with as long as the tile is completely flat. Those tiles are extremely stiff and would definitely take any flex out of the box when attached adequately. You could also embed metal in the MDF the way Merlin did to reduce box flex.
I've been working on a concrete baffle kit for a while, I posted about it a couple of weeks ago. I've got it to the point where there's something to show but it's not done yet, too many other higher priorities.
@cakyol - I think the cost of changing from MDF to something else is most likely of less benefit than making other changes so companies focus on improving drivers, etc. If you can make a 5% performance improvement by spending $40 more on drivers and can make a 2% performance improvement by spending $40 more on a box, it's not a hard decision. It's not that hard to understand. Cost is a factor for almost everyone. Sane buyers want the best return on their money. Is it sane to demand that manufacturers spend money inefficiently? (no)