Voodoo Lab

Can the Pedal Power AC be used to power a Mackie Mix5 that has a draw of 18vac 600mA using a PPAY or PPY cable?

The manual does not say weather or not the voltage or current doubling cables can be used with this unit.

No, the voltage doubler cable/adapter is for use exclusively with DC power and cannot be used with Pedal Power AC, sorry.

Note, you could however power it from the AC courtesy outlet (rear panel) with its adapter/wall-wart.