.....well, I just received an email from Ron Stimpson as he burns the midnight oil at SVS/Denver.....
"We prefer "wood pulp based, extreme high density, ultra low air content,
compressed fiber cylinder, laminated under extreme pressure, polymer
wrapped and CNC cut proprietary tubing." About .25" thick they
have been shipped all over the world, in thousands, and not one, not ONE
has ever been damaged in shipping or in subsequent use.
If someone say's "hey your sub is made out of cardboard"... just reply
"yeah some people would be misinformed enough to say that, but at least it's
not made out of 'sawdust and glue' (MDF)".
You malign what you don't understand in life we've learned at SVS."