Spring Tank Reverb Driver Version 2

Reverb Tank Utility

Spring Tank Reverb is a Eurorack driver module for use with a variety of spring tanks. Features a CV control of the wet/dry mix. 4HP, Added Feedback pot, Drive is now a set-and-forget trimmer on the PCB. Version 2-1 and after has a jumper setting for easily optimizing tank size (short, medium, long).
FEATURES
Pots: Tone, Feedback, CV of wet/dry amount, Initial Wet/Dry amount. Drive trimmer for accommodating various spring tanks. Signal strength LED indicator. RCA jacks on the back of the module for mounting tank internally in the case.
CHOOSING A TANK
GROUNDING CONNECTORS (5TH character in tank model #) Type A or C is best. SIZE & NUMBER OF SPRINGS | Short length and Medium Length is best. Long length (approx. 16”) – version 2.0 may need resistor R8 decreased to 100-ohms for a boost in power. 2 or 3 number of springs are known to work well. INPUT IMPEDANCE | (2ND character in tank model #) | any except “F” (1475 ohms, has not been tested). OUTPUT IMPEDANCE | (3RD character in tank model #) |“B” known to work best, all others untested. TANKS THAT WERE TESTED AND KNOWN TO WORK WELL | Vintage Folded Line, Medium size, 3-spring, as those used in a Roland Space Echo | Accutronics BAB3C1B Medium size, as taken from a Fender Sidekick Amp | | Accutronics 4AB3C1B Long size 16”, 2-spring (version 2: R8 to be changed to 100-ohms for best performance). MOST RECOMMENDED | Ruby Tubes 2EB2C1B short size 9”, 2-spring, has plenty of drip and feedback with a size to fit many different case scenarios.

Check my Reverb Store for availability and other cool modules I make.