HK Audio CDR 210 F - Manual (Page 33)

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Figure 24: CDR 210 sub cluster in blocks
11.2 Bass Cluster/ Stacking
In the classic right/left stacked configuration, one
half of the bass bins is arrayed to the right of the
stage, the other to the left.
Advantages:
The stacked bass bin configuration depicted above
is a conventional and widely accepted option.
It is very easy to deal with (short cables and
walking distances).
Disadvantages:
Massive comb filtering effects sweep from right
to left, creating peaks and valleys in frequency
amplitude and typical low end drop-outs.
11.3 Bass Clusters in Blocks
If you want to deploy many bass bins, arraying them
in blocks is a good option. Note that it is important
to maintain varying distances between individual
blocks.
Advantages:
Different frequencies are cancelled or boosted. The
sum of the comb filters creates a relatively uniform
soundscape. This setup's horizontal directivity is
quite wide, as is typical for bass signals.
Disadvantages:
Though slight, comb filtering effects remain a
problem. Cables and walking distances are longer
than for right/left stacked configurations.
Rigging and Curving COHEDRA ® System