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Fig. 1: Ci45/Ci60/Ci90 loudspeaker

passive

crossover

Fig. 2: Connector wiring

IMPORTANT!

Ci45/Ci60/Ci90 Manual

Ci45/Ci60/Ci90

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 .

CAUTION!

Only operate Ci45/Ci60/Ci90 loudspeakers with a d&b amplifier

configured correspondingly otherwise there is a risk of damage to the

loudspeaker components.

Connections

Since November 2004 the Ci45/Ci60/Ci90 cabinets are fitted with two

NL4 connectors. All pins of both connectors are wired in parallel using

the pin assignments 1+/1−. Using one connector as the input, the

second connector allows for direct connection to additional

loudspeakers.

The systems can be supplied with a fixed cable as an option (cable

H-07-RN-F 2 x 2.5 qmm/AWG 13 with a length of 5.5 m as standard or

length as required). Pin equivalents of NL4 connectors and fixed cable

option (PG) are listed in the table below.

Tab. 1: NL4 and fixed cable (PG) pin assignments

Operation with D12

Selecting Ci60, Ci90 or Ci45 mode in the D12 enables up to two

cabinets to be driven by the respective channel. In applications with low

continuous levels or low ambient temperatures up to three cabinets can

be connected.

(9.1E)

NL4

Brown (+)

1−

Blue (−)

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