ALLEN & HEATH GR2 Manual do Utilizador descarregar pdf

Allen & Heath Limited, Kernick Industrial Estate, Penryn, Cornwall TR10 9LU, UK

t: +44 1326 372070, f: +44 1326 377097, e: [email protected]

; www.allen-heath.com;

GR2 Architect’s Specification

The audio zone mixer shall be equipped with nine source inputs including six balanced mono microphone or

line inputs and a further three unbalanced stereo line music inputs. The inputs shall be configurable as six

mono mic/line plus three stereo music, or four mono mic/line plus four stereo music sources. The mixer shall

have four mix buses providing one stereo and one mono zone output as well as a configurable mono aux

output. The stereo zone shall be able to be switched for mono operation. The mic inputs shall be on

Phoenix type plug-in barrier strips, with Mic1 duplicated on XLR for standard cable connection. The stereo

line inputs shall be unbalanced on RCA female connectors. The zone and aux outputs shall be duplicated

on balanced plug-in barrier strips as well as unbalanced on RCA female connectors. Mating barrier strip

plugs shall be provided for installation pre-wiring. The outputs shall operate at 0dBu with drive capability of

+20dBu into 600 ohms and a residual output noise lower than -88dBu.

The mixer shall include a dedicated paging channel capable of using the Mic1 input or an external page or

alarm source connected to a balanced line level page input on plug-in barrier strip. A page EQ shall provide

150Hz low cut and 8kHz high cut filtering for speech intelligibility. The paging channel shall be configurable

to independently duck the zone outputs by 20dB for voiceover announcements, or mute the zone sources

when an alarm is triggered. The page signal shall not be affected by the zone source or level settings. A

separate microphone mix channel shall be configurable to provide front panel or remote priority override of

non-priority microphone sources, panel switch or remote microphone muting, and a balanced line level input

to mix in an external source. The microphone mix channel shall be independently configurable as a source

to each zone. It shall be possible to link units to expand the number of microphone inputs in multiples of six.

Each of the nine sources and two zones shall have a front panel rotary level control and two-colour led meter

to display signal presence and peak indication 4dB below clipping. The rotary knob shall be removable and

pluggable to make the setting tamperproof during normal operation as required. Switches shall be provided

to independently select the music sources for each zone. Front panel leds shall indicate which source is

selected to each zone. An option to mix all sources rather than select one at a time shall be provided. A

front panel music mute switch shall be included. Zone level and/or source selection for each zone shall be

configurable for local or remote control using 10V logic to interface with wall plates, third party controllers

such as AMX or Crestron, and other custom equipment. Two RJ45 connectors shall be provided to interface

with remote equipment using standard CAT5 cable. The Zone Remote shall allow daisy chain connection to

wall plates or other controllers from both zones, while the Utility Remote shall allow custom wiring for remote

page select, microphone mute and priority override, and fire alarm trigger.

A standard, single gang wall plate remote controller shall be available as an option. This shall be able to

control music source selection and/or zone level. The controller shall be an ‘intelligent’ type with built-in

memory and a menu of configuration settings to determine its operation. One plate may be used to control a

single or both zones simultaneously, or two plates may be daisy chained for separate control of each zone.

The plate shall provide the following additional functionality: Zone 2 follow zone 1 switch wiring option for

room combining, switch wiring option to disable the controller functions, and a built-in infra-red sensor to

work with an optional hand held remote controller. The IR remote shall add a mute function and the ability to

store and recall up to four source selection / level presets. Menu options shall be available to disable the

recall and/or store preset functions, and to configure the controller power up default for off, last settings or a

selected preset.

All installation settings shall be on recessed front panel trimmers and switches protected behind a removable

face plate. It shall be possible to replace the control knobs with blanking plugs to protect their function. It

shall not be necessary to remove the mixer from its furniture or to remove its cover to configure its settings.

The face plate shall provide a means of securing an application specific custom label. Trimmers shall be

provided to adjust the mono input gain over a 70dB range from -10 to +60dB, and set the stereo line inputs

for -10dBV or +4dBu sensitivity. Trimmers shall adjust a dedicated microphone mix EQ providing swept 20

to 400Hz high pass filter, swept 200Hz to 5kHz +/-12dB mid control, and shelving +/-12dB high frequency

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Allen & Heath Limited, Kernick Industrial Estate, Penryn, Cornwall TR10 9LU, UK t: +44 1326 372070, f: +44 1326 377097, e: support@allen-heath

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Allen & Heath Limited, Kernick Industrial Estate, Penryn, Cornwall TR10 9LU, UK t: +44 1326 372070, f: +44 1326 377097, e: support@allen-heath

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