ALLEN & HEATH GL 2000 User Manual download pdf (Page 3)

ENGINEERS’ TOOLBOX

GL2200 is equipped with comprehensive afl/pfl

monitoring facilities, input, output and master

metering, engineer’s headphones, talkback to

monitors or audience, and signal generators for

equipment calibration and loudspeaker setup.

Oscillator and pink noise generator.

A 1kHz signal can be routed through level

control and meters to 2-track recorders or other

equipment for level alignments. GL2200 also has

its own pink noise generator so you can check

frequency response and phase connections for

the loudspeaker arrays, perhaps compensating

for auditorium acoustics or speaker

characteristics by using graphic equalisers

connected to the group/L-R inserts.

Pink noise gives equal energy per octave over the

audio band. It closely simulates human hearing

characteristics and the kind of signals the sound

system will actually be required to reproduce.

Inputs

MONO MIC/LINE INPUT CHANNELS

Wide range, low distortion input preamps

characterise the quiet, convenient

professionalism of the GL2200. Comfortably

dealing with signals from -60 to +10dBu, the

balanced XLR mic/line input accepts both

microphone and line signals.A separate

balanced 1/4”TRS jack connector is also

provided for line inputs from -40 to +10dBu.

Input phase reversal and lo-cut filter are

available pre-insert, on each channel, prior to

routing to EQ.

4 band EQ

Allen & Heath’s designers have a reputation for

creating the best in British EQ.

GL2200 has 4 EQ bands with swept frequency

controls for the two mids.The HF control used

in conjunction with the Hi Mid sweep enables

presence to be added to vocals or sibilance

removed.The silky high-end characteristics of

the HF band can soften the most iron clad

cymbals.

The Lo Mid band can eliminate booming, muddy

“proximity effects” inherent in microphones

when close miking, and the lo-cut filter works in

conjunction with the LF control to give a bass

end boost whilst cutting stage rumble and vocal

popping.

STEREO INPUTS AND RETURNS

Two stereo inputs and two stereo fx returns are

included in every frame size, together

amounting to eight further inputs to the mix.

Stereo inputs

Each stereo input has the same wide range

preamp as the mono channels, a 4-band EQ and

6 aux sends (sending the mono sum of left and

right signals).

GL2200’s stereo channels can also be used as

mic channels, giving you maximum flexibility.

And you can use the stereo Line inputs as

additional stereo returns at the same time, so

nothing is wasted.The mic/line switch selects

the signal to be routed through the main

channel path: if mic is selected then pressing

the line to lr switch routes the stereo input

source direct to the L-R mix buss.

The mic input on the right hand stereo channel

acts as the talkback mic input when the main

channel source is selected as line.A bright green

l.e.d. indicates when this routing is set.

Stereo returns.

Stereo fx returns are handled by two channels in

the master section, each providing sends to

auxes 1 and 2 (for, say, adding reverb or fx to

monitors as well as L-R) 2-band EQ, mute and

PFL. Balance controls set the stereo position in

the output, routed via fader control to the L-R

mix or a pair of su/jointfilesconvert/274509/bgroups, as required.

MADE FOR THE PROFESSIONAL

Built to the same reliable and easily serviced

standard as the input channels, the master

section has vertically mounted circuit boards

and clear, uncluttered controls.

The six aux master controls, colour coded to

match the channel sends, have AFL buttons with

l.e.d. indicators.The outputs are impedance

balanced on TRS jacks for long feeds.

MASTER METERING

The 12-segment master L-R bargraph at the top

of the section follows the L-R mix, PFL/AFL or

2-track signals.

Any AFL or PFL selection on the console

overrides the L-R mix monitor, and is warned by

a big red l.e.d. in the master section as well as

individual l.e.d.s on the channels. Depressing

the L-R/2-track button also overrides the

monitor mix, for listening to tape input replay.

Headphone output, with a separate level

control, follows the master bargraph signal.An

engineers’ wedge monitor may be connected to

the L-R Mono output, which has a separate level

control and can be set by its mode switch to

follow the AFL/PFL buss.

All input channels, group and L-R (or aux

masters) have individual 4-segment l.e.d. meters.

2-TRACK SEND AND RETURN

Phono connectors are provided for easy

connection of analogue or digital recorders, CD

or other intermission music sources. Send and

return level controls are provided and a green

l.e.d. warns when replay is being routed to the

L-R mix.

Use the output to record sound checks or for

performers’ recordings of the gig. Setting levels

for the recorder is made easy by the 1kHz

oscillator when routed to the L-R mix.

MF2 SWEEP

MF1 SWEEP

LF HF

0 100 1K 10K 30K

FEATURES AND FLEXIBILITY

Six auxes, switchable pre or post fade for fx and

monitors, large channel mute buttons with clear

leds, pan and routing controls to L-R and groups,

PFL with warning leds, individual channel

metering and phantom power switching, full

length 100mm faders and intelligent panel

layout and colour coding give you the intuitive

control you need for accurate and efficient

productions every time.

Internal links give even more options to set the

console to your preferred way of working.

Mono and stereo inputs

SYS-LINK

EXPANDABILITY

Sys-link

is Allen & Heath’s buss

interconnection option that allows a console to

be connected to any other Sys-link

-compatible

mixer within seconds.A single multi-way cable

joining any two consoles in the system is all that

is required.

As Sys-link

is an electronic standard there are

no mechanical or physical constraints on

connection to other consoles.The GL2200 is at

home working alongside an 8-buss GL4000 or a

GR1 3 zone mixer, or any number or

combination of Sys-Linked Allen & Heath

consoles.

nd outputs

10 100 1k 10k 20k

Frequency (Hz)

-20

Signal level ( dB )

50 500

2200

200

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ALLEN & HEATH GL 2000 User Manual Page 3

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