Oh, my god... That made me laugh.
Nuuska, you must be a rock to be able to handle equipment like that.
Hello
Like I wrote - they came FROM an installation - they were originally built into ceiling of Tampere-talo -
https://tampere-talo.fi/en/ - which is a congress etc building in my hometown. They were useless from beginning, while the rest of the ceiling was not built to take the vibrations. They had two spare elements, which I spotted and traded to a spool of about 350 meters of 24-multicore - with a deal that they eventually give me the built-in speakers, too. So in July 2011 they finally came down. I had waited about four years for that, but the only way to get them down was to build a scaffold into the room between seats etc - and you do not make that any day - considering the ceiling is about 15 meters/45feet high. But then in summer 2011 they had other reasons to build the scaffold - and down these came. After having them for couple weeks I took the elements out and donated the boxes to someone, who needed heavy plywood.
Speaking of plywood - we have really high-grade plywoood available here in any lumberyard. 10-ply half-inch birch is common. My next speaker project will be made of 3mm 3-ply double glued curved stagemonitor. And I have a sample sheet of 1mm 3-ply - and they say they have even 0,4mm 3-ply available. Not exactly cheap - but to think of the vast possibilities of that material.
So - after getting rid of the cabinets I stored the elements - waiting for something to pop out. I called FANE - they are in England - and they provided me with Thiele-Small parameters so I can calculate possible cabinets. They also said there will be no spare parts or other support whatsoever, so I decided to not use them in my own pa-rig. Of originally total 8 elements two are gone - two are going to Belarus within next couple months. Four will wait... If you write Fane colossus 24 in Google you will find interesting things that some individuals have done.
chaztmo - I am in pretty good physical shape probably, because I have done roadie work for decades - but always minding my back - rather take two trips with lighter loads ( being wimpy ) than one trip with all of it "Hey - I´m a man - I can do this" ( being a bully ) - and like I wrote some time ago - always face the load directly. The heaviest cabinets I ever had in my rig were 6 JBL woofers at 75kg / 165lb each.