Interview with FOH sound engineer Sean Sullivan about having a solid backup plan for every link in the signal chain and using virtual playback for sound system calibration.
How to Set Subwoofer Delay (6 top brands agree)
You don’t need expensive equipment or a PHD to learn how to set subwoofer delay time. L-Acoustics, d&b audiotechnik, Coda Audio, RCF, Funktion-One and dB Technologies all recommend the same subwoofer phase alignment method.
For the Best Concert Sound, Keep the LF Reverb Time Low
The control of low frequencies is critical to the success of a concert. Use directional subwoofer arrays and LF absorption.