My own reverb tank

[Death Super Mario]

I made reverb tank. I used door spring and metal cake mold.


I Have 2 piezos for pickups.
Piezo for getting sound to guitar amp was good.
Piezo for sending guitar sound in  reverb tank was to quiet.  Didn't sent.
I searched and found that I need amplification.
I don't know what amplifier is good for my reverb tank.
To be honest I don't know any amplifier besides guitar amplifiers.

[artifus]

http://www.nicolascollins.com/texts/TapeOpReverb.pdf

a simple 386 amp will work you can run the output thru a small audio transformer backwards to up the voltage/output of the piezo driver.

[KazooMan]

I think you will find that you spring is way too heavy for the job.  The springs in reverb tanks are very light weight. 

[gmoon]

Yep, a looser spring would be better.

Silvertone and Danelectro both had some piezo element reverbs. They sound kinda trashy, but they do work...

[Death Super Mario]

I bought spring from hardware store.
I would have bought better one if I could buy any other springs.
Even simple eye bolts I bought in special shop that dealing whit bolts.
Bolt store sells only 3 different eyebolts.

[artifus]

check out your local toy store/dollar store for a cheap echo mic for a spring.

the $2 spring reverb

[Top Top]

I made this out of huge, quite heavy springs. Not super tight though:

I've used little echo mic springs too, but the huge ones can have some huge decay. Experiment and see what sounds good. It's not always what everyone says will be best.

I used a little 386 amp to drive an "exciter" which is mechanically hooked to the springs. You can see photos in the video.

[petemoore]

  A big enough motor to 'jiggle' the spring, sufficient amplification to drive signal into/drive the motor.
   LM386 comes up as a good starting candidate [or something with greater supply voltage max/current drive, say .5 or 1watt, with 'correct' impedance to drive...
  Peizo's don't wiggle slow or far enough.
   Try a fixed magnet transducer [ie like a reverb driver or speaker], pretty much any speaker will have sufficient Xmax to wiggle the spring somewhat, how well depends on the speaker stats and the amplifiers ability to 'cleanly' drive it.
  Mechanically connecting the driver-coil to the spring is a challenge, the assemblage should be lightweight as possible and firmly attach the two components. Removing some cone made sense when I tried it.
   See 'transduce anything' thread...
   
  http://www.parts-express.com/pe/showdetl.cfm?Partnumber=309-150
   
  Is an example, the 'larger-dollar' ones are fun to play around with. But not a whole lot different than tearing up and fixing the spring to an old speaker cone...cutting large holes in the cone is an option [so the air doesn't dampen so much] includes the chance that the coil will start rubbing on the magnet, the heavy spring may cause induce instant or early 'cone sag'.
  Drivers can be 'spun' also, a stack of neodenym magnes for the fixed magnet..a coil [very thin wire [on a coil fomer and suspension is te tricky part. Something 'found' or bought is generally preferrable.