Peavey Mark III Series Speakers FH-1, MB-2, MFX-1 and Peavey XR1200 Powered Mixer

[Jazz P Bass]

https://assets.peavey.com/literature...s/80370355.pdf

[Guitarman67]

I'm using the first diagram shown in the different ways to hook it up. This is the one I get a hum in. It calls it stock set up.