Ta to User211 and Ali Tait for appreciation.N.B.Cousin Allens speakers were hand crafted with 2.5 cm sand filled plywood walls by the way-a key idea then.
I'd like to add that my hifi trail [and trial] has been for accurate music rendition from affordable items rather than accumulating big name gear that I could never afford.
The highlight of my journey was this March successful demo at Scalford with a system cheaply designed for 2 minute listens-ie short visit punters.
My audible range 20hz to 10Khz Yours?