The Spring Thing

Doug Tymofichuk (The Electronic Peasant) has come up with a great design for a slinky spring reverb. A stereo version is being explored for a new Wiard module. Here are some notes on experiments and developements.

The Orginal Design

Dougs original designed used modified speakers as drivers and pickups
http://www.angelfire.com/electronic/epeasant/projects/springs/springs.html

New Motor Tranducers

Doug proposed the use of motor tranducers for improved durability

The Stereo Version

I asked Doug if he could think along the lines of stereo. He responded with this brilliant design.

Drivers:

Rotary transducer for right and left spring drive

Pickups:

Right Channel motor pickup

Trembler Pickup Experiment

I felt that the motor pickups might produce excessive damping on the spring and wanted to try "trembler" pickups based on typical spring reverbs. Here are the results of testing.

Left and right channel trembler pickups, magnets are motor stator magnets attached to spring with Epoxy glue.