Cloud CX261 I Manuel d'utilisateur télécharger pdf (Page 6)

Clearly better sound

E&OEIssue_1.0

Architect’s and Engineer’s Specication

The mixer shall be equipped with six unbalanced stereo music inputs

on rear panel phono sockets (RCA jacks) and two electronically

balanced microphone inputs on rear panel Euroblock connectors. It

shall be possible to select an alternative front panel 3.5 mm stereo

jack socket as the input connector for one line input; selection of this

input shall be made by a rear panel push-button switch, with front

panel LED indication of its selection. The alternative input shall have

a dedicated front panel level control and three LEDs indicating signal

levels of -20 dBu (green), -4 dBu (yellow) and 0 dBu (red).

The music input to be used shall be selected by a 6-position front

panel rotary switch. It shall be possible to control the level of the

music source independently of the microphone levels.

The two microphone inputs shall be mixed and summed with the

selected music input. Each microphone input shall have its own front

panel level control. Each music input and each microphone input shall

also have a rear panel sensitivity control; the microphone inputs shall

have a bi-colour LED (green/red) to aid adjustment. Independent

2-band equalisation adjustment shall be provided on the rear panel

for i) the selected music source and ii) summed microphone inputs.

Phantom power shall be available at either or both microphone

inputs when selected by internal jumpers.

It shall be possible to congure one microphone input to accept a

line-level input directly from a telephone system by a rear panel push-

button switch. In this conguration, the input shall be galvanically

isolated from the source by an internal transformer, and independent

gain control shall be provided.

Control inputs shall be provided to activate either microphone

input by external contact closure; it shall be possible to congure

the mixer such that this function is overridden and either or both

microphone inputs are always active. It shall be possible to congure

the mixer to perform the following additional functions: i) when

activated by its control input, MIC 1 will take priority over MIC 2; ii)

detection of a signal on either microphone input will automatically

reduce the music level by 30 dB, iii) one line input will automatically

override all others when a signal is present, even if unselected, and a

choice of three release times of up to 12 seconds shall be available

to restore the original input.

Optional remote control plates shall be available to permit control

of music level only or music level and input selection; it shall be

possible to retrot these to the mixer at any time. The remote

control plates shall connect via a rear panel Euroblock connector.

A push-button switch shall be provided to activate this connector; a

front panel LED will conrm activation and the corresponding front

panel controls will be disabled. When remote control of music level

only is required, it shall be possible to retain front panel control of

source selection by moving an internal jumper. An external control

input shall be provided to allow muting of the music source by a re

alarm or other external emergency system via isolated, ‘volt-free’

contacts, and this input shall be congurable to respond to either a

short or open external circuit.

The mixer shall have three outputs: main L & R stereo and a mono

auxiliary music output. It shall be possible to congure the mixer

by internal jumper to combine the L and R signals for mono output

operation. The main outputs shall be electronically balanced and

the auxiliary output shall be transformer balanced and galvanically

isolated so as to be suitable for connection to a telephone system as

a Music On Hold source. All outputs shall be on rear panel Euroblock

connectors. The auxiliary output shall be congurable internally to

either follow the selected music source, or to be permanently fed

with a mono sum of one line input; this line input will not be the

same one that can be set to have priority over the other line inputs.

The microphone inputs shall have no signal path to the auxiliary

output. It shall be possible to set the level at the auxiliary output

independently of the main outputs with a rear panel control.

A range of optional EQ cards shall be available to optimise the

mixer for use with popular installation loudspeakers from various

manufacturers. It shall be possible to t these in either of the

channels of the main output.

The mixer shall be built in a 1U steel chassis for mounting in a

standard 19” rack. The mixer will be tted with a front-panel power

switch with LED indication. The mixer shall be powered by 230 V AC

mains, connected via a detachable IEC cable. An optional, external

115/230 V transformer shall be available to allow the mixer to

operate on a 115 V mains supply.

The mixer shall be the Cloud CX261; the optional remote control

plates shall be the Cloud RSL-6 Series (music level and source

selection) and the Cloud RL-1 Series (music level only).

Cloud Electronics Limited

140 Staniforth Road, Shefeld, S9 3HF. England.

Telephone: +44 (0)114 244 7051 Fax: +44 (0)114 242 5462

Web: www.cloud.co.uk E-mail: [email protected]

Cloud Electronics USA

2065 Sidewinder Drive, Suite 200, Park City,

Utah 84060. United States of America.

Toll Free: 0855 810 0161

Web: www.cloudusa.pro E-mail: [email protected]

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Cloud CX261 I Manuel d'utilisateur Page 6

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