Martin Audio WLXGS User Manual page 16

Array
In these examples "wide" means that there are no coverage nulls within the forward 180º at mid-bass
crossover frequencies. Wide coverage arrays have significant output beyond 180º making them more prone to
room colouration.
"Narrow" means that coverage will drop significantly before 180º coverage is reached at the mid-bass
crossover frequency.
General rules:
The larger the array the more directional it becomes
A larger, directional system will be less affected by the room
We get a 6dB far field sound pressure boost every time we double the
number of cabinets.
Stacking safety!
Stacked WLX or WLXGS subwoofers should always be blocked, strapped
and anchored from above by a qualified rigger.
All material © 2007. Martin Audio Ltd. Subject to change without notice.
Approx Boost
(wrt single unit)
-
+12dB
+12dB
+24dB
Horizontal Vertical
coverage coverage
Wide Wide
Wide Narrow
Narrow Wide
Narrow Narrow