Martin Audio WAVEFRONT COMPACT - APPLICATIONS GUIDE Application Manual page 109

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CONTENTS
4.7.1 Array shapes vs coverage
WSXs may be stacked and arrayed to increase sound pressure and tailor coverage.
The sound pressure increase is intuitive but the significance of subwoofer array
shapes and sizes is often overlooked.
The following table shows the sound pressure boost and coverage provided by a
variety of flat fronted arrays:
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 WSXs should always be blocked, strapped and anchored from above by
a qualified rigger.
MARTIN AUDIO - APPLICATIONS GUIDE, WAVEFRONT COMPACT SERIES
ENGLISH ONLY
Array Approx Boost
(wrt single unit)
All material © 2007. Martin Audio Ltd. Subject to change without notice.
Horizontal
coverage
- Wide
+12dB Wide
+12dB Narrow
+24dB Narrow
GUIDES
Vertical
coverage
Wide
Narrow
Wide
Narrow
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