Loud hiss when soloing bridge or neck p/u, disappears when blended 50/50

[SleepGetsYourGhost]

Hey all - I have a bass with Delano single coils and an Audere preamp, and I'm getting a lot of hiss when I favor either neck or the bridge pickup. When the pickups are blended 50/50, there is no hiss at all.

Any ideas? The bass is fully shielded, could it be a bad solder joint somewhere or a grounding issue?

Thank you!

 

[line6man]

Sounds like 60Hz hum. If so, that's the nature of the beast, with single coils.

 

[4StringTheorist]

Sounds like 60Hz hum. If so, that's the nature of the beast, with single coils.

When people use a word like "hiss" they're often talking about frequencies way up above 60Hz?

Hey all - I have a bass with Delano single coils and an Audere preamp, and I'm getting a lot of hiss when I favor either neck or the bridge pickup. When the pickups are blended 50/50, there is no hiss at all.

Any ideas? The bass is fully shielded, could it be a bad solder joint somewhere or a grounding issue?

Thank you!

How low down in the bass range or up into the treble range does the hiss sound? Is it a consistent note, or staticky/noisy sounding?