REVERB TANK AND CABLE NOT INCLUDED
The Stoel Music Systems Spring Reverb in Dark Mode is a flexible spring reverb module with extended features. In addition to standard level, wet/dry mix, and tone emphasis controls, the feedback control re-introduces the reverb signal back at the input. At low settings, this increases the density of the reverb. At high settings, it will cause oscillation. The level at which oscillation occurs will depend on the reverb tank used. In addition, a 100% wet output and a feedback input jack allow for external feedback signal processing. For example, by sending the feedback signal through a filter, unique reverb textures can be created, and the feedback control can be further exploited for sound design.
Reverb tanks use electromechanical technology dating back to the 1940s, so some noise is expected, even under ideal conditions. If the case is moved while the reverb is turned up, the user may hear a loud “crash” sound. This is caused by the springs hitting the sides of its metal enclosure. This behavior is normal. When locating the reverb tank in the case, place it as far away from the power supply as possible to avoid picking up hum and noise. A switching power supply is generally quieter than one that uses large transformers. Some level of hum and noise is expected in any installation due to the nature of the electromechanical reverb spring and magnetic pickups. Experimenting with the placement and orientation of the reverb tank may be necessary to achieve the best results. Mechanical noise can be minimized by using the included mounting grommets and mounting the reverb tank away from vibration sources such as speakers or drum pads. High signal levels will also reduce the signal-to-noise ratio, resulting in better sound quality.
The red RCA jack goes to the output of the reverb tank, and the white RCA jack goes to the input. Reversing these connections may cause unexpected results or no sound. Other reverb tanks may be experimented with as well. Compatible tanks will have an 800-ohm input impedance and 2575-ohm output impedance. Different impedances may work, but results may vary. We recommend the following (reverb tank not included):
9.25” long reverb tanks