The Reverb is a simple device with a single section of controls.

Reverb controls
Figure 7.20.1: The Reverb's controls.

  1. Active: This indicator lights up when the pedal’s effect is active.
  2. Feedback: This knob sets the level at which the echo signal is fed back into the reverb effect, which defines the amount of echoes from one at minimum to approximately 25 at maximum. Note: When “Pre-delay” is at maximum, the amount drops to approximately 14. Also, when the input signal is panned in the stereo field, each successive echo is panned to the opposite and original point in the stereo field consecutively, creating a stereo delay effect with a soft attack.
  3. Damp: This knob models the high frequency absorption of the acoustic space by setting the end cutoff frequency of a low pass filter applied to each echo from no filtering at minimum to approximately 100 Hz at maximum. Note: The filtering follows a fast descending envelope of approximately half a second.
  4. Room size: This knob models the size of the acoustic space and its absorption of sound by setting the duration of each echo from 170 milliseconds at minimum to approximately 11,3 seconds at maximum. Note: The decay of the echo’s level is linear.
  5. Pre-delay: This knob sets the amount of time elapsed between each echo from 8 milliseconds at minimum to half a second at maximum. Note: “Feedback” must be more than minimum for “Pre-delay” to have an effect. Depending on the value of “Room size”, under a threshold of 30 to 100 milliseconds, individual echoes are indistinguishable from each other and perceived as one.
  6. Level: This knob sets the ratio of dry to wet signal linearly from dry signal only at minimum through equal parts dry and wet signal at center to wet signal only at maximum.
  7. Active: This switch activates the pedal’s effect. When this switch is off, the input signal bypasses the effect and is output unaltered.


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