ALLEN & HEATH iDR-4 Specifications download pdf (Page 10)

GR 2

6 Mic/Line Inputs with EQ

Balanced inputs are provided on terminal blocks

for convenient pre-wiring, with Mic 1 duplicated

on XLR for quick plug-and-play. Each input has

selectable +15V phantom power, protected mic/line

pads and gain trimmers. There is a mic priority

function for chairman or MC override, and a mic

mute. The mic also has dedicated EQ with swept

HPF, swept MF and shelving HF. An expander

input allows more mics to be added to the mix.

3 (or 4) Stereo Music Inputs

Music channels are provided on RCA inputs with

protected -10/+4 level settings. Mic/line 5/6 can

be configured as a stereo input providing a 4 mic,

4 stereo line system. Inputs may be configured

one at a time, or all together

FEATURES

Paging & Music Priority Override

GR2 offers a dedicated paging channel with

tailored EQ for speech intelligibility. The source

can be configured from Mic 1 and/or an external

input or alarm message and the zone program is

ducked when a page signal is detected. Music 1

may be configured as a priority input for jukebox

and pre-recorded message override.

Mono & Stereo Zone Outputs

Outputs are available on both RCA and terminal

blocks for pre-wiring or plug-and-play operation.

Stereo Zone 1 may be configured for music only

or music + mics, and mono Zone 2 can be

configured for mics, music or music + mics.

VCAs are provided for ducking, alarm override and

remote level control. Zone 1 features a 2-band EQ

and a mono switch.

Mono Aux Output

A versatile output for additional zone, mic expander,

paging distribution, sub bass and more is provided

on RCA and terminal block connectors. It is

configurable as page out, mic mix, follow Zone 1

or Zone 2, and has a switchable 100Hz LPF for

sub-bass feed.

Remote Control

The GR2 uses standard RJ45 CAT5 cable for

installation. ‘Zone remote’ allows remote level and

source selection for both zones over a single cable.

A 10V DC control input is provided for custom wired

switches or potentiometer, third party interface or

the ALLEN&HEATH PL-12 wall plate. The PL-5

hand-held IR controller is available for use with the

PL-12. ‘Utility remote’ allows remote mic priority

and mute switching, page selection and alarm override.

Configuration Protection

All settings are configured from the front panel.

Preset dip switches are letter coded, and trimmers

recessed for screwdriver access. A cover plate

protects the settings and provides space for fitting

a custom label. Any of the rotary knobs may be

removed and hole plugs fitted as required.

Technical Specifications

0dBu = 0.775 Volts rms, +4dBu = 1.23V rms, 0dBV = 1 Volt rms, -10dBV = 316mV rms:

MIC/LINE input

Balanced XLR (1), terminals Pad out = >2k ohm,

-60 to -20dBu

Pad in = >10k ohm,

-30 to +10dBu

Phantom power +15V DC

STEREO input

Dual RCA phono >10k ohm,

-10dBV or +4dBu

ZONE output

RCA, Z balanced terminals <75 ohm, 0dBu,

+20dBu max

EXPANDER input

Balanced terminals >10k ohm, 0dBu

PAGE input

Balanced terminals >10k ohm, 0dBu

Mic EQ

HPF 20-400Hz,

MF peak/dip +/-12dB @ 200Hz to 5kHz,

HF +/-12dB 10kHz shelf

Zone 1 EQ

LF +/-12dB 80Hz shelf,

HF +/-14dB 10kHz shelf

PL-12 Wall Plate

Part of the ALLEN&HEATH PL Series, this

intelligent wall plate provides remote level and

source selection for the GR2. Two may be

connected using a

single CAT5 cable,

one configured to

Zone 1, the other to

Zone 2. Additional

custom wiring

options are provided

for Zone 2 follow

Zone 1 room combiner

switching and a wall

plate disable function.

PL-5 IR Controller

This hand-held controller

works with the PL-12

IR sensor to

duplicate the

wall plate

controls and add

further functions

including source

mute and presets for

favourite level and source

selection settings.

The GR2 is a new 1U rack or desk mount 9-input, 4-output, analogue zone mixer for demanding but budget-

conscious installations requiring sound for live entertainment, paging, background music, conferences,

presentations and a diverse range of modern architectural applications. The GR2 offers the installer a host of

front panel preset switches and trimmers to meet each special requirement. After installation, the settings are

protected by a cover plate and unused controls may be blanked off to keep things simple for non-technical

operators. There is a combination of XLR/RCA and screw terminal connectors for pre-wired or plug-and-play

installation and extensive remote control capability using standard Cat5 cable.

Page EQ

HPF 150Hz, LPF 8kHz

Remote control

Level 0V = off +10V DC = max

Source select 1=2V, 2=4V, 3=6V, 4=8V

Ducking

Signal detect threshold -20dB

Music priority

Signal detect threshold -20dB

Release short = 2 sec,

long = 12 sec

Signal meters

2-colour LED signal = -14dBu,

peak = +14dBu

Power supply

100 to 230V 47-63Hz AC, universal mains input

25VA max

Mechanical specifications - Dimensions in mm

1U rack or desk mount (removable rack ears)

Width Height Depth

Desktop 482mm 44/49mm 235mm

(19”) (1.75”) (9.3”)

Weight 3.6kg (8 lb)

PL Remote Controllers

1 2 3 4 5 6 7 8 9 10

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ALLEN & HEATH iDR-4 Specifications Page 10

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