Speaker out of phase dumb question?

[Pillsbury Dough Boy]

Hiya Folks

Can anyone answer this real real dumb question. I am using two mesa combos for a wet dry set up and I have a amp splitter box with a ground lift function but it has no speaker phase switching function. Now, currently both combo speakers are pushing out and in phase when played. My question is, will the phasing alter depending on the gig, or power supply depending on each gig venue or am I safe to use both in the confidence that the speakers will function correctly.

Can anyone answer this with certainty.

Thanks in advance,
PDB

 

[CoG]

You shouldn't have phasing issues at the speakers. You may still end up having audible phasing effects in a venue just because of how stage/room/rig are laid out. Put your combos side by side, like an inch apart, and if possible close mic them both and get your room volume from the PA instead of the amps.