On 29/03/2018 19:18, Brian Gaff wrote:
All sounds a bit expensive to me.
Nothing off the shelf that will suit? Some time ago I got some made out of
wrought iron cheaper than that but the guy retired.
Brian

Back in the days of diy radios (1940's, 50's) my Grandfather
installed his loudspeaker in a concrete pipe.

Grandma not amused.