Spring reverb tanks are used to create a unique reverberation effect in guitar amps and organs. The reverberation effect is created when an audio signal created by a transducer is sent through one or more springs, the movement of the springs is then converted back into an audio signal by another transducer at the other end, creating the unique sound. Not sure which tank you're looking for or what a 4AB3C1B is? Check out our spring reverb calculator to help you determine what these tank designations mean!
AccutronicsAccutronics reverb tanks were originally manufactured as a division of Hammond Organ, and became popular in the guitar industry through their inclusion in the famous Fender Twin Reverb. In 2009, Accutronics reverb was sold to Belton who now makes Accutronics reverb tanks as Accu-Bell Sound Inc.
Long (2 Spring) tank, long decay, 8Ω in / 2,250Ω out. Input insulated/output grounded connectors. Horizontal/open side up mounting.
Short (3 Spring) tank, medium decay, 10Ω in / 2,575Ω out. Input grounded/output insulated connectors. Horizontal/open side down mounting.
Accutronics mini-size spring reverb tank. Long decay, 2-spring, 600Ω input impedance, 1500Ω output impedance. 4.88" x 1.73" mounting centers.