Wayne Parham Messages: 18756 Registered: January 2001
Illuminati (33rd Degree)
Most plywood products are made without any attention paid to the possibility of having voids between plies. It's not usually a problem when making furniture. But for speakers, a void is often (usually) fatal. Because where there's a void, there's usually debris in the void. And even if there's no debris at the time of manufacturing, some will material will likely break free when subjected to the vibrations of sound.