+1 for these units. I have a 242a? I know a few others that have them as well.
One thing I am surprised to see, is that nobody is mentioning the Walter Sear trick of crimping the coils in random increments. Maybe I missed it, I dunno.
It's in an article @ the Searsound web site. That guy has done a lotta heavy stuff of course, and he states he uses springs all the time.
The mod thing though...
It is subtle, so you can crimp with needle nose-> listen, crimp, listen and when you have tamed the

, STOP, because there's no going back.
On the plus side though, if the unit uses accutronics, these are easy to get your hands on new, or even just gut an old transistor /cheapo guitar amp for one, if you screw it up beyond use.
If it is a stereo unit, crimp the other side at different intervals. Even though the chances of you getting the exact same sound with them crimped EXACTLY in the same places is next to nothing, I would still shoot for wildy different spacing for the crimps, for a more dramatic stereo effect.
If you want it to sound a bit more like a plate, crimp it up, but remember to not over do it... listen as you go, and be sure.
Also, I really wanted to reduce the decay of one side, so I got some very small lead fishing sinkers, and crimped two on one side's spring. No

, more like a short plate. Kinda like a really damped plate of some kind....maybe.
After I did this to mine, the only thing that can make it "

" now, is a REALLY hard drum hit, and I don't typically use these for drums. I think maybe twice, and with very little return in the mix. Once was a brushes track, with very little hard transient "whack", and it worked pretty nicely.
I built my own plate too, which hangs in a seperate room, and I use both it and the spring equally as much.
They sound a
little more similar after the spring mod, but still each do their own thing. There is no substitute for a real plate though, even a ghetto one. Whomever mentioned building that DIY plate, is right on target.
Even if you don't coax EMT fidelity out of your DIY plate, it is still going to be very useful from time to time, on a lotta things. Even if it is not "reality", it's still a cool effect.
Maybe somebody will find this useful....
Peace,
J