Posted by Wayne Parham on August 21, 2002 at 00:22:46

In Reply to: Another 1 pi port question...... posted by crazychile on August 20, 2002 at 21:58:03:

That's exactly the tube your speakers were designed to use. It's a standard mailing tube having 2.5" OD and 0.060" wall thickness, which is then 2.38" ID. The total port length from entrance to exit should be 3.5".

I buy these mailing tubes in bulk at www.PaperMart.com.