Eliminate phase problems!
30:10
Subwoofers (and the air itself!) are NOT in-phase with your mixer and amplifier.
19:49
Things you didn't realize about bass... until now.
8:36
Is doubling speakers +3dB or +6dB? What's parallel and series wiring?
8:20
Solving Stereo Problems In Live Sound With Dave Rat & L-Acoustics
8:53
Smaart - sub woofer alignment with Keith Morris
8:52
Phase alignment example
23:22
Speaker Placement Basics For Small Concerts, DJ's, and Portable Churches
8:01