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Craig Anderton's reverb unit that appeared in the September 1976 Guitar Player magazine. The layout is for a TL074 op amp type pinout instead of the RC4136 op amp originally specified. This circuit is powered by bipolar power supply, I have included a wiring diagram with a charge pump to allow power from a single nine-volt battery without sacrificing any headroom.

• General Build Instructions
• Stage Center Reverb Bill of Materials Text
• Stage Center Reverb Schematic
• The old Stage Center Reverb Schematic
• Stage Center Reverb Parts Layout (simple wiring)
• Stage Center Reverb Parts Layout (True bypass wiring)
• Stage Center Reverb Parts Layout (with charge pump wiring)
• Stage Center Reverb Ready-For-Transfer Printed Circuit Board Layout

Would you like a Ready to Solder Circuit Board for this project?

Here's some more information about Spring Reverb

• Accutronics Tank Information
  
  
• Spring Reverb Info Page - Great information here.
  
  
• Forrest Cook's Electronic Circuits - Guitar Reverb Pedal
  
  
• Robin Tomtlund's Reverb Driver/Receiver - Near the top of the schematic list.

Here's some photos of my Stage Center Reverb. I used a charge pump board to power this with a normal 9v battery/dc jack. The charge pump board is mounted on the side, opposite the RCA (tank) jacks.