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Floor! what floor? I was going to suspend them on a magnetic field,it would only need 32,510 x 0.25inc dia magnets each. To stand just 5mm of the floor, but I had second thoughts, I live to close to London City Airport, and could not get Jumbo Jets in the garden, unless Mrs W. let me take washing line down.
Women fickle crits she said get a hobby but she will not allow me to take up close observation plane spotting.
NVA P90sa - NVA A60 MK1 - DIY Cubettes - SSC - LS2
DIY concrete open baffles in progress
Dr Bunsen Honeydew wrote: ↑Sat Mar 30, 2019 1:17 pmI only did one, based on a Wharfedale Kit 5 in 1970, it was chipboard box with lots of nails part hammered in inside to give key and quick setting concrete poured in to line each panel. Worked for bass solidity but as said you needed a forklift to move them, sold them to a friend. Commercially didn't Townsend do one that involved metal, concrete and carpets
Myself and a good friend also did this in the early seventies except we robbed the drive units from his mother's speakers. She had a Dynatron system and the speakers had Dalesford units iirc. We cast the cabs by making a box within a box and used stiff wire as reinforcing. There were bloody heavy and sounded great to a pair of bass freak teenagers. Wasn't there someone called Faraday or a company or something that made concrete speakers?
Anyway I wish the OP well with his project.