Yes, if one or more of the speakers is "out of phase", it will cancel out a lot of the sound. Out of phase means one or more of the speakers is wired differently than the others. So, the speakers should be wired + to +, - to -. But if you have one of them wired + to -, it is out of phase and will cancel out all of the duplicate information from its partner speaker if they are pointed toward each other.
I would check your wiring from the amp outputs to the speakers very closely. If one is incorrect, that is your problem.
Enjoy,
TIC
I would check your wiring from the amp outputs to the speakers very closely. If one is incorrect, that is your problem.
Enjoy,
TIC