those propagation times, the sound will appear to come from an area in between the
two systems for the listener shown.
Apron fill delay line setting = t downfill - t apron fill
Apron fill gain setting wrt downfill gain = 20log
10
(t downfill ÷ t apron fill) dB
A1.11 W8s as side clusters
A Wavefront Longthrow (See Section 2) centre cluster may be used with W8
downfills for efficient operatic and orchestral amplification. Velodrome side seats can
be some distance away (typically across a wide cycle track) so fairly powerful side
clusters may be required for good projection and intelligibility.
W8s blend in sonically without off-axis lobing and stage mic colouration.
Deep orchestral stage continues this way ñ
To avoid abrupt changes in timbre between the side and centre cluster, the side
downstage W8 axis should be aimed at the seating where the centre cluster is just
beginning to lack very high frequencies.
Controller output levels and delays should be adjusted so that the side and centre
clusters are at the same level and sychronised in the same area.
All material © 2007. Martin Audio Ltd. Subject to change without notice.
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