Voodoo Lab

I’ve got a Voodoo Lab Mondo and trying to figure out how I can power my EHX Q-Tron. I want to make sure before I try it so I don’t damage the pedal.

I purchased the 2.1 mm Straight Barrel Standard Center Negative Voltage Doubler Adapter, but now I’m thinking I purchased the wrong cable, and that I should have gotten the Voltage Doubler Cable with Center Positive polarity. Or can I just use this Standard doubler adapter and plug a red-barreled cable (that came with the power supply) into it?

Also, I believe I should be using outputs 1 and 3, or 2 and 4, both set to 12V, is that correct?

Thanks for the help!

Indeed, reverse polarity (center positive) is required and 2.5mm too.

To power the Q-Tron (24VDC) with Pedal Power Mondo, use a Voltage Doubler Cable (reverse polarity, 2.5/2.1mm), part# PPEH24 in any two of the (right-side) outputs labeled 1-4, DIP switches in the 12V (away from normal) setting.

Cheers!