Still got your Mosfet/Spring Reverb ?
No.
Good to here you got it working. Thanks for the tips.
N/P.
Think i've got the design figured out, i just need to decide if i should use the marshall tray i've got, get a low impedance one (like a fender one),or use a transformer with the existing tray.
The trick with that is to figure out what the transducer impedance is. Easiest way, if possible, is to find information on the tank, I got lucky and figure out it's an Accutronics, probably I picked the right tank by size, number of springs...I talked to Accutronics service, and read every mark on the unit, trying to identify the data sheet for the unit I have. Must have been an older tank or whatever, none of the numbers were deemed usable, they thought I was messin' with them for a minute, they made it sound like I have the worlds only unmarked tank from them...who knows, I'm pretty good at reading markings...BTAIMay.
Decisions, decisions.
You're not kiddin', there's tons of decisions when you say 'I just wanna hook up my reverb tank', but I don't really wanna build a tube amp and have it dedicated to it.
How much wattage did your driver put out?
I read [I think at accutronics] to drive the tank hard, I put 5w tube amp driver on the input transducer, but it sounded best when turned down, probably a watt or less.
Did you get a good boing?
Yo're askin' about the mosfet driver?
Yes it boinged really goodly.
I think I can hear the driver circuit through the spring, but it sounds like 'it' [sound] is going through a spring, differences in what circuit drives the input transducer...it's kind of like...what color pepper do you put on your peppersteak?
The resonant qualities of the spring tend to dictate their own freq's to a fair extent, most of the driver differences seem to be noticable in the attack portion, while the transducer is 'whippin up' the spring vibrations from a state of greater stillness, am I gettin' rambly yet?
How well the driver maintains excursion control can make a smoother/rougher sounding reverb...
By the time I talk this or that, the impedances and tank type have changed, decisions decisions indeed.
Try an LM386 amp through a speaker, then try a more substantial amp with same speaker, note differences, try to imagine that going through a spring...to make a long story short.
Then just choose. Easier said than done.
Pick a tank first, then figure out you'll need something else to really drive it.
Pick a chip and power supply, then realize the tank you want doesn't work that way, or the headroom avialble doesn't lend itself to catering to your 'boosta-fuzz-boosted' tendancies that you want reverbed.
Then just figure out you don't need surf-verb, build one with a shorter decay, and rock.