WAMPLER TUMNUS DELUXE Popping

Footswitch Replacement Daughter Board

The manufacturer identified a batch-specific issue where the switching logic or mechanical integrity of the footswitch causes audible transients. This daughter board replaces the original switching interface to ensure proper grounding and signal shunting during the transition between bypass and active states. It specifically addresses the discharge of accumulated DC voltage that results in the 'popping' sound.

3PDT Soft-Touch Footswitch

Physical degradation of the internal mechanical contacts can cause excessive 'bounce' or arcing during the electrical connection. In a high-gain circuit like the Tumnus Deluxe, any mechanical instability during the switch throw is amplified through the output stage as a sharp impulse. Replacing the mechanical component restores a clean, rapid transition between the signal paths.

1M Ohm Pull-Down Resistor

A failure in the pull-down resistor (either via a cold solder joint or component drift) prevents the input coupling capacitors from bleeding off static DC charge to ground. When the switch is engaged, this stored energy has no path but the audio output, resulting in a single loud pop. This is a fundamental physics failure in the signal-clamping stage of the pedal's input.