Cloud CX163 Instalasi dan Panduan Pengguna - Halaman 10

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Microphone inputs

MIC 1 input is intended for the direct connection of a

microphone. It is electronically balanced and transformerless

with an input impedance of greater than 2 kohms and

optimised for use with microphones of 200 to 600 ohms

impedance. The screw terminal input connector should be

wired thus:

CONNECTION

Screen

Signal '-' (cold)

Signal '+' (hot)

Unbalanced microphones may be used by connecting pin 2

to pin 1 (cable screen) in the mating (male) screw-terminal

connector. 12 V phantom power is available, see "Phantom

Power" on page 12.

The mic input may be routed to Zone 1, Zone 2 and the

Utility Output, at any level in each zone. All microphone

announcements automatically reduce the music level in that

zone while the announcement is in progress (see "Microphone

priority" on page 14 for full details.)

Zone Outputs

Connect the inputs of the power amplifiers feeding the

loudspeakers for each zone to the Z1 OUTPUTS (L & R)

and Z2 OUTPUTS (L & R) connectors. Note that these

outputs are stereo but may be reconfigured to operate in

mono by moving internal PCB jumpers J7 (Zone 2) and/or

J8 (Zone 1); see "PCB jumper location and settings" on page

17 for locations). The outputs are balanced and will drive

input impedances down to 600 ohms. The connector pinout

is as follows:

CONNECTION

Screen

Signal '-' (cold)

Signal '+' (hot)

Nominal output level is 0 dBu (775 mV). The output is

designed to drive professional/industrial power amplifiers

with balanced inputs (typically on XLRs). In this case, wire

as the diagram in the next column. Note that the screen can

be left unconnected at the source end if earth loops are a

problem.

CX163 Installation and User Guide v1.1

CX163 Balanced output:

pin 1 ground

pin 2 cold

pin 3 hot

SCN

The screen connection at the

zone end may be omitted if it

helps reduce earth loops

Amplifiers with unbalanced inputs:

If audio amplifiers with unbalanced inputs are being used

(e.g., hi-fi amplifiers), the following wiring should be adopted:

CX163 Balanced output:

pin 1 ground

pin 2 cold

pin 3 hot

SCN

When using single-core cable,

don't connect 'cold' at the

CX163

CX163 Balanced output:

pin 1 ground

pin 2 cold

pin 3 hot

SCN

Utility Output

The mono Utility Output provides most of the functionality

of Zones 1 and 2, but has no front panel controls and the

output level cannot be controlled remotely. It is however

useful for, e.g., routing background music to secondary areas

such as corridors and circulatory areas, or toilets, etc.

The Utility Output is balanced, uses the same connector

type and pinout as Zones 1 and 2, and has the same electrical

characteristics. The music source at the Utility Output may be

configured by moving internal jumper J6; see "Utility Output"

on page 10 for full details and "PCB jumper location and

settings" on page 17 for jumper locations.

Balanced inputs

(XLRs):

pin 1 ground

pin 2 hot

pin 3 cold

Unbalanced input (e.g., phono)

When using twin-and-screen

cable, don't connect the screen

at the amplifier end.

Unbalanced input (e.g., phono)