HK Audio CDR 210 F - Manual (Page 27)

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5 Determining the
Curving Angle between
Two COHEDRA
® Mid/
High Enclosures
The curving angle between two enclosures is set
by simply adjusting one pin. One person can easily
carry out the entire process of curving cabinets.
The maximum adjustable angle depends on how
the mid/high range enclosures are configured in a
flown stacked array. Two different housing designs
are available for optimizing the gap between two
mid/high range enclosures, the straight variant
CDR 208 S (S stands for straight) and the slanted
variant CDR 208 T ( T is short for trapezoidal).
Both COHEDRA
® mid/high enclosures (the
CDR 208 T and the CDR 208 S) are labeled uniform-
ly to provide information on the adjustable angle:
The left side of the connector panel designates the
angle if the top enclosure is a CDR 208 S. On the
right is designated the angle if the top enclosure is
a CDR 208 T (see Figure 8 a, b).
If two CDR 208 S enclosures are configured in a
flown stacked array, your only option is 0°.
If one CDR 208 S and one CDR 208 T enclosure
each are configured in a flown stacked array, you
can opt for 0 °, 1.5°, 3 °, or 4.5 °.
If two CDR 208 T enclosures are configured in a
flown stacked array, you can opt for 4.5°, 6°, 7.5°
or 9 °. This variant is an excellent choice when you
want to configure sharply curving down-fills.
The rigging equipment is designed so that the cur-
ving angle can still be adjusted when COHEDRA
®
mid/high arrays are flown (see Fig. 9).
How is this done?
The pin that determines the curving angle (the top
pin on the mid/high unit) is merely a predefined
stop for the flexible connector component when
the entire COHEDRA
® mid/high array is pulled
together accordion-style and thereby adjusted using
a lashing strap, chain hoist or motor attached at
the back. If no force is exerted, the entire mid/high
array is suspended at a 0° angle, meaning that the
pin is easily repositioned!
Important notes on safety when curving the array
with lashing straps and chain hoists: When tighte-
ning the lashing strap or using a chain hoist, ensure
that just enough force is exerted to curve the array
to the desired extent along the rear of the housings.
Use a chain hoist with a maximum load of 250 kg
(8 m in length). This also suffices for configurations
with up to 24 Mid / High units. If possible, choose
a pick-point for the chain hoist shackle near the top
rigging frame’s rear connector.
Do not use powerful chain hoists with low gear
ratios (that is, a powerful force action and a long
lashing strap)! A chain hoist that exerts too much
force relieves the load on the rigging system’s rear
pick-point, which means the pick-point’s force ac-
tion is distributed unfavorably across the full length
of the rigging frame. This can permanently warp the
rigging frame, thereby voiding the operating permit
Never place or use motors between the rigging
frames for this purpose! This will overload the top
flight frame and impair operating safety!
Important note: If you first mount a CDR 208 S
enclosure to the top rigging frame - that is, confi-
gure two CDR 208 S mid/high enclosures in a flown
stacked array - you must insert the back pin into
both the eyelet labeled 0° and through the connec-
tor component's slot (see Fig. 10)! Otherwise, the
angle will be set incorrectly and you will not be able
to curve the array as desired!
For every other configuration, do not insert the pin
into the slot!
6 Preparations
The following section describes how to set up a basic
mid/high array. Use the COHEDRA
® CAPS soft-
ware to select on the top rigging frame pick points
for determining the angles between the mid/high
enclosures.
Move the open case with the four mid/high
enclosures in position.
Rigging and Curving COHEDRA ® System
Figure 9: Setting the curving angle on a flown array
Figure 10: Connector component attached o the top
rigging frame for a 0 ° curving angle
Figure 8: The curvature between two COHEDRA®
mid/high enclosures