Cloud CX163 Instalasi dan Panduan Pengguna - Halaman 13

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Zone selection is made using the MIC 1 ACCESS connector

([11] at "Description of rear panel" on page 8). This is a

4-pin 5 mm-pitch screw terminal connector with pinout as

follows:

LABEL

UTL

To enable the microphone input for paging, pin 2, 3 or 4

(or any combination thereof) should be connected to pin 1

(0 V). When the CX163 is shipped from the factory, the

access contacts are bypassed by internal PCB jumpers;

in order for the access port to operate correctly, these

jumpers need to be removed. The jumpers are: J1 (Zone 1),

J2 (Zone 2) and J3 (Utility Output); see "PCB jumper

location and settings" on page 17 for their locations. It is

recommended that when removed, the jumpers are stored

on one pin of the PCB header in case the unit needs to be

reconfigured in the future.

See also the manual section "Priorities" (page 14) for

further information regarding configuring the CX163 for use

with a paging microphone.

Mic EQ

Two-band equalisation adjustment is provided for the

microphone signal; these are pre-set controls on the rear

panel ([5] at "Description of rear panel" on page 8). The

equalisation is optimised for the tonal correction of speech

signals: the HF controls provide ±10 dB at 5 kHz whilst the LF

controls provide ±10 dB at 100 Hz.

To achieve a "flat" response for either microphone input, set

the controls for that input to 0 dB (the '12 o'clock' position).

High-pass filter

The mic input has a fixed 100 Hz high-pass filter to remove

the lowest frequencies. This helps to reduce the effects of

breath blasts and microphone handling noise. The filter is

always in circuit.

FUNCTION

0 V

Enable Paging to Zone 1

Enable Paging to Zone 2

Enable Paging to Utility Output

Zone Outputs

In normal operation, the music level in each zone will be set by

the front panel MUSIC LEVEL control ([2] at "Description

of front panel" on page 7), or by a corresponding control

on a remote plate. Follow the procedure described previously

("Gain & level" on page 12) to adjust the music level in each

zone.

Stereo and mono operation

Zone 1 and Zone 2 in the CX163 are stereo, with separate left

and right channels and output connectors. Stereo programme

material from sources connected to the music inputs will be

reproduced in stereo in these Zones.

If a mono mix of stereo mix is required – as might be the

case if loudspeaker locations within the zones make effective

stereo imaging impractical – the outputs may be converted to

mono operation by moving internal PCB jumpers J8 (Zone 1)

and/or J7 (Zone 2) from the factory default STEREO position

to MONO. With mono mode selected in a zone, the left and

right outputs carry identical signals (but see "Connecting an

RL-1 Series remote control plate" on page 11 regarding the

use of dual RL-1 remote control plates)

Zone EQ

The various zones in a building often have different acoustic

properties, and may also have different models of loudspeaker

installed. The CX163 is fitted with HF and LF EQ adjustments

([7] on "Description of rear panel" on page 8) for the

music signal at each zone output, to enable the audio

frequency response to be best matched to each zone. The

controls should be adjusted by listening; up to 10 dB of cut or

boost at 10 kHz (HF) and 50 Hz (LF) is available. Note that

these EQ adjustments do not affect the frequency response

of microphones or paging.

CX163 Installation and User Guide v1.1