Salvation Module switch pop

MTS module area including module modifications

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Posts: 46
Joined: Fri Sep 27, 2019 1:57 am

Salvation Module switch pop

Post by lebobl » Thu Oct 24, 2019 1:59 pm

Hey, guys! Just acquired my first Salvation Module, the Antisaint. It sounds killer but there is a very loud pop when I toggle the Deep switch and the GEQ switch.

Is this common with Salvation modules or is there an issue with mine? Thanks so much!
Egnater Mod 100 with Winged C 6550s
Tech 21 Midi Moongoose footswitch
Mesa 2x12 Recto Cabinet w/ Celestion V30s
Modules: Jaded Faith VX30, Salvation Antisaint, Mr. Scary, Salvation Loneclean

Jaded Faith
Posts: 2718
Joined: Sat Jul 14, 2007 10:25 pm
Location: Hamilton, NJ

Re: Salvation Module switch pop

Post by Jaded Faith » Sat Nov 02, 2019 7:13 am

I have never seen the module in question, however switch pops are always due to the circuit design. Whenever something something being toggled by a switch pops, you are hearing the rapid charging of something being connected to ground that did not have any previous electrical reference. There are several better ways to design such a circuit. to prevent audible pops. The most common being to shunt a very high impedance ground reference. This prevents an immediate complete charge by providing a slight current path while the switch is off. An example of this in a stock module would be the Bright (or Gain Boost) found on every module in it's stock form. A 10M resistor prevents any sudden charge that could potentially cause a pop. NOt so much of an issue on a Bright circuit, but the potential is there is a Gain Boost is present.

Hope that helps,
Authorized Service Center for US Music and Egnater
Authorized Reseller for Celestion, Scumback & Mercury Magnetics

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