Ci45/Ci60/Ci90
Fig. 1: Ci45/Ci60/Ci90 loudspeaker
C45i0, Ci60 and Ci90 cabinets are full range, two-way bass-reflex
enclosures each fitted with a 12" LF driver passively crossed over to a
1.4“ HF compression driver coupled to a CD horn with 45° x 45° (Ci45),
65° x 40° (Ci60) or 90° x 40° (Ci90) coverage pattern. The cabinets are
designed to allow the horn flares to be rotated through 90° allowing
greater flexibility in placement for a given dispersion.
The cabinets are constructed from marine plywood and have an impact
resistant paint finish. The front is protected by a rigid metal grill fitted
with an acoustically transparent foam. M10 threaded inserts are
provided on the top and bottom, and on the sides of each cabinet, for
mounting rigging accessories. A recess at the top of the rear panel,
which also serves as a handle, is fitted with two Speakon NL4 input
connectors.
Ci45/Ci60/Ci90 systems are designed specifically for permanent
installation. In the standard, upright operating position the CD horn is
positioned below the LF driver so the HF dispersion is less likely to be
influenced by reflections from walls, ceilings or other equipment
mounted nearby. This arrangement improves the headroom before
feedback when systems are flown above the stage.
The frequency response of the systems extends from 18 kHz down to
55 Hz enabling use in most applications without a subwoofer. Where
higher SPLs with an extended bass response are required the Ci systems
can be combined with d&b active subwoofer systems .
NOTICE:
Only operate Ci45/Ci60/Ci90 loudspeakers with a correctly configured
d&b amplifier, otherwise there is a risk of damaging the loudspeaker
components.
Weather resistant (WR) option
NOTICE:
The WR option enables operation of loudspeakers in changing ambient
conditions, however it is not intended to enable permanent, unprotected
operation of loudspeakers outdoors.
- Provide an additional cover over the loudspeakers.
- Aim the cabinets either horizontally or with a downward tilt.
Cabinet design
Component
Description
Cabinet
Plywood to DIN 68705 Part III.
Equivalent to flame spread class 3.
Temperature range from –200° C to +100° C.
Wood joints
Bonded waterproof to stress class D4.
Cabinet paint
Two component PU paint
(seaworthy, chemical resistant and temperature
resistant to 110° C).
Screws
Stainless steel (VA).
Driver cones
Impregnated with silicone spray or coated.
Driver components/
Crossover network
The coil and pole plate are also treated with
silicone. The crossovers are sprayed with
silicone on both the solder and component
sides.
Ci45/Ci60/Ci90 Manual
(9.2 EN)
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