Wayne Parham Messages: 18752 Registered: January 2001
Illuminati (33rd Degree)
I like MDF, but humidity makes it swell and standing water turns it to mush. Baltic birch is much better structurally.
I use MDF where humidity isn't an issue and where the speaker will rarely be moved. I use baltic birch for speakers that will be moved a lot and/or those that might be subjected to the elements.
Those are the only two wood products I'll use to build speakers. For home hi-fi, I generally cover the cabinet with a fine wood veneer but for prosound I use Duratex.