V1.22
Owners Manual SP20-Linex™
- 10 -
Horizontal coverage affairs…………
In some cases it might be necessary to use more than one array per side in order to achieve
more horizontal coverage or to be used as in-fills. An important rule applies when this situation
occurs. Instead of placing an array directly besides the first one, the proper approach would be
to fly a second array, focused on another portion of the audience. This second array should best
be spaced 6-7 meters (approximately 20 ft) away from the first array.
Given this separation, interference only occurs in the low frequency range. Hence there are no
audible intelligibility losses. The first major cancellation is shifted lower in frequency band. and
tends to be masked or filled in by room reverberation (example, 28 Hz for 2 arrays of the same
size, spaced 6 metres). Additionally, focussing the arrays at different panning angles will reduce
comb filtering interaction since the overlap region is reduced. Last but not least, the ear cannot
resolve tightly spaced comb filtering notches at higher frequencies throughout the overlap
region.
