Replacing a speaker in my buddies Aguilar DB810 and he didn't pay attention to how the speaker was wired up when he removed the old one. I've tried a few configurations on the new speaker, but each confuguration makes one of the speakers much louder than the others. That one speaker ends up sounding flabby and annoying. Not sure if this is normal but I want to make sure I do it the right way regardless. Does anyone know how this cab is supposed to be wired up? I looked up a few diagrams but I'm not sure if it's parallel or series. I'm also generally pretty unknowledgeable when it comes to current flow. Thanks in advance.