I have a Lakeland JO 5 with the LH-3 preamp. Last night at church I had a terrible hum/noise. We were able to eq and gate the hum so I could use the bass. Are the single coil hanson p/u's hum-cancelling or not., especially with both on. I want to make sure of this before I begin looking at ground loops and other causes. I used my 55-94 with no problem this morning.