Two Pre-amps into one Poweramp... signal drain problems..

[MEGA DAVE]

So I'm having this problem where I'm getting serious volume drops in my rig now that i'm running two pre-amps into one power-amp... When I connect just one pre-amp I get all the volume back.. How do I prevent this?

Here's my setup...

ENGL E530
Guitar-A/B< >Y cable-Carvin poweramp-cabinet
Digitech 2120

The power amp is a standard solid state pa power amp unfortunately...

 

[Wolfeman]

What model poweramp exactly? I'm going to assume it has something to do with the way you have that setup.

Wait, can you draw out your routing? the way you have the a/b y stuff wrote out is confusing.