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RE: Loudspeaker cabinet material and sound of each . Cabinet builder ??

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In Reply to: RE: Loudspeaker cabinet material and sound of each . Cabinet builder ?? posted by Klassenfahrt on November 18, 2012 at 17:37:00

resonating and inert are, of course, two opposites.

I'd agree, in general, about MDF being awful stuff. Everyone who reframes their panels with real wood reports improvement over the MDF which comes stock.
IMO, clever design trumps sheer mass. By that I mean....Sure, you could use 90mm of birch ply or whatever floats your boat. However, I'm reasonably certain I could design and execute a panel of equal stiffness with far less material and weight.

I'm also personally not a fan of resonating box enclosures. At least when the box itself resonates...not the contained volume. It would seem to impart a coloration at the resonant frequency. For a one-off? Maybe...just maybe, you could get away with it. For a production speaker? Problematic.
Too much is never enough

Follow Ups:

RE: Loudspeaker cabinet material and sound of each . Cabinet builder ?? - Klassenfahrt 15:02:00 11/19/12 (0)
Hi, I am absolutely with you. Just using mass to cure everything is plain stupid and a game of luck. I didn't use the 90mm parts for rigidity. I did some "acoustic room tuning" to the inside of the enclosure that works much better with my speakers than furious attacks of wadding. With stacking of wood sheets in some areas a wall thickness got to 90mm.

If I want the ultimate stiff, non-resonant enclosure I'd use an engineering trick and tension the cabinet walls. Say use 32mm ply, drill some holes through parallel walls, stick a threaded rod through and tighten the rods. Tight.
For a shelf speaker I'd use 2 10mm rods through the sidewalls and one 10mm rod through top/bottom.

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