Posted by Wayne Parham on September 17, 2001 at 21:55:06

In Reply to: Where to source port for Theatre 4's? posted by Till E. on September 17, 2001 at 16:08:52:

The port is 4" dia. and 4" long. The material I use is cardboard mailing tube. It is available at any drafting or office supply shop. The outside diameter is 4", inside diameter is 3.84". It's perfect.