5.3" long (~11.6" major axis) half-ellipse tube based size-wise on Zintz's product is easy in 1" ID pvc and a good player with 'natural' spatial fieldK-builder Carl's extended X15 type aluminum tube (1.875"ID, 9" long) has diameter transition(s), makes funky graph but sounds pretty good - - (was K trying to put "reverb" into that tube? - or scatter the field?)
x15 4.2cf coupler -- -------------------------------8cf coupler with 18"
before filing & sanding
~pattern when scaled for 5.3-5.5" half-ellipse length
Edits: 08/19/07
This post is made possible by the generous support of people like you and our sponsors:
Topic - K-slotted tube waveguides 10 cents of pvc should make one - freddyi 09:28:41 08/19/07 (0)