Re: Endfire sub array under a stage
Yes, putting a steered array under a stage will affect it's coverage pattern, in addition to stage vibration problems. Excellent paper on the topic here:
AES E-Library » Subwoofer Positioning, Orientation, and Calibration for Large-Scale Sound Reinforcement
The conclusion: steered subs need open space around them to work the way they should.
Hopefully I don't get in trouble for quoting a copyrighted article, but this really sums it up well:
"...it is evident that subwoofer placement directly underneath the stage can almost eliminate any advantages gained with cardioid polar patterns; the low-frequency SPL on the stage is virtually identical to that in the audience (Figure 22). Moving the subwoofers two meters forward so that they are not underneath the stage results in much lower SPL on stage while preserving the audience area response (Figure 21)." Page 10.
