I came across this article the other day: http://www.prosoundweb.com/article/print/how_to_build_your_own_plate_rever
I haven't got space for a 2.5m long unit like the real thing, so I've
started trying to build a little one 1 by 0.5 meters. I've managed get it working and
sounding like a reverb.
The plate made a fairly cool sound recorded with the
piezo when I hung it in front of my drumkit, it was low end heavy, with nothing above
15kHz. I've driven it with the cannibalised speaker which sounded much better, but the
weight of the plate has deformed the cardboard the voice coil is wrapped around, so I'm
devising a more rigid driver, and a guy I know has offered to knock up a steel frame for
nothing (working in heavy industry has its perks), so I can get some tension involved.
Has anyone had experience with a real EMT 140? I guess they must have had a pretty
damn good reason for making them so big, but is there any reason a smaller one can't sound
I've canibalised an old speaker, and used a piezo from maplins for £1.50
or something like that and the steel for the frame isn't costing me anything. I should
have looked around for a cheaper/freer 'plate' but I was impatient so I just went in
B&Q and paid £20. Still a fairly cheap experiment!