HK Audio CDR 210 F - Manual (Page 11)

11
B
1 COHEDRA
®
Loudspeakers
1.1 CDR 208 S and CDR 208 T
Mid/High Enclosures
Design and Construction of the Mid/High Enclosures
Two types of housings are available, the purpose of
the different design being to optimize the typical "J"
form of mid/high arrays. The CDR 208 S is housed
in a straight rather than slanted cabinet. The CDR
208 T (T is short of trapezoidal) enclosure's top
and bottom are slanted at 4.5° angles, a design that
enables the configuration of sharply curving down-fills.
CDR 208 S and CDR 208 T enclosures are made of
19 mm, 13-ply birch plywood and coated with water-
repellent, black acrylic enamel. The baffle board
cover consists of a metal grille that also serves as
a compression chamber and a horn channel for
the 1.4" driver.
The CDR 208 S and CDR 208 T weigh 30 kg.
They are 65 cm wide, 25.5 and 24 cm high, respectively,
and 60 cm deep (including rigging attachments).
Two slot grips have been routed into the side panels
for easy transport and set-up.
Serving to fly the enclosures are fully integrated
rigging attachments comprising four quick-release
pins and three rigging connectors, two mounted on
the sides and one in the rear.
Electrical and Acoustical Data
CDR 208 S (T) enclosures feature two horn-loaded
8" cone chassis speakers and a 1.4" B&C high fre-
quency driver with a front-mounted acoustic lens in
a CD horn configuration. Aligned in a tri-axial array,
the drivers are addressed via an internal passive
crossover with a separating frequency of 800 hertz.
CDR 208 S (T) enclosures' nominal electrical
power-handling capacity is 500 watts RMS at 8 ohms
impedance. They produce a sound pressure level of
108 dB (1W@1m), measured under half-space con-
ditions. Maximum SPL measured under the same
conditions at a distance of one meter is 139 dB
at 10% THD.
The CDR 208 S (T) enclosures' horizontal dispersion
pattern is 80°. Frequency response ranges from
88 Hz to 16 kHz (±3 dB). The CDR 208 S (T) enclo-
sures are thus able to provide sound reinforcement
public address applications calling speech only
without requiring a subwoofer.
Connections
The connector panel on the rear of CDR 208 S (T)
enclosures is recessed to protect the ports from
harm. On these enclosures, you'll find two Speakon
NL 4 connectors. Both ports' four pins are wired in
parallel. Pin assignments are:
pin 1+ = mid/high +, 1- = mid/high -,
2+ = sub +, 2- = sub 2-.
CDR 208 S and CDR 208 T Enclosures'
Technical Data
Power handling (RMS): 500 watts
Power handling (program): 1,000 watts
Impedance: 8 ohms
Chassis: 2x 8" / 1.4" B&C
Frequency range (±3 dB): 88 Hz to 16 kHz
Frequency range (-10 dB): 75 Hz to 19 kHz
SPL (1W / 1m, half-space): 108 dB
SPL (maximum, half-space) *): 139 dB @ 10 % THD
SPL (peak, half-space) *): 146 dB
Crossover frequency: 800 Hz
Horizontal dispersion: 80°, constant directivity
Vertical dispersion: Depends on the no. of stacked
enclosures and curving configuration
Connections
Ports: 2 Speakon NL 4 ports, wired in parallel
Pin assignments: 1+ = mid/high +, 1- = mid/high,
2+ = sub +, 2- = sub 2-
Housing
Material: 19-mm, 13-ply birch plywood
Coating: Black acrylic enamel
Handles: Two slot grips on the sides
Rigging hardware: Integrated side and rear rigging
attachments with quick-release pins.
Weight:
CDR 208 T
30 kg 66 lbs.
CDR 208 S 30 kg 66 lbs.
Dimensions (W x H x D):
CDR 208 T: 65 x 25.5 x 60 [cm]
25 10/16" x 10 1/16" x 23 10/16" [inch]
CDR 208 S: 65 x 24 x 60 [cm]
25 10/16" x 9 8/16" x 23 10/16" [inch]
*) Specifications refer to a cluster of four Cohedra
components.
The COHEDRA ® Loudspeakers
Figure 1: Cohedra CDR 208 T
Figure 2: Cohedra CDR 208 S