Bedienungsanleitung Allen-Heath GL2800 (Seite 24 von 42) (Englisch)

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24 GL2800 User Guide

TALKBACK and SIGNAL GENERATOR

TALKBACK

Individually assignable talkback is available to all the

main outputs. Plug in a suitable cable or gooseneck microphone. A

good quality dynamic or condenser vocal microphone is

recommended. Note that +48V phantom power is available at the

XLR as standard. If you prefer, this can be disabled by repositioning

an internal jumper link.

WARNING: Do not connect unbalanced sources or cables to

inputs with phantom power selected. To avoid loud clicks do not

press the TALK switch when plugging or unplugging the talkback

microphone.

TALKBACK enable First select the source you wish to talk to.

You can select the auxes in logical groups, useful for communicating

with the performers on stage. The matrix can be enabled in pairs,

ideal for working with stereo in-ear monitors or communicating with an

outside broadcast facility. You can also talk to LR and M, typically

used for announcements to the audience. Once selected, press and

hold TALK to route the mic to the required destination. Adjust the

talkback level using the TRIM control below the TB mic XLR. Pressing

TALK automatically dims the level of the signal generator if it is turned

on.

TALK latch mode Press this switch to permanently activate the

TALK switch. This is useful when using a handheld microphone with

built-in switch for talkback. It means you do not need to press the

TALK switch to talk to your enabled destinations. Simply use the

switch on the microphone. The latch switch is recessed to prevent

accidental operation. Use a pointed object to change its setting.

SIGNAL GENERATOR / PINK NOISE

Press to select either

pink noise (up position) or a 1kHz sine wave tone as the test source.

Start with the trim control turned fully down. The generator ON switch

is recessed to prevent accidental operation. Press this with a pen or

pointed object. The green indicator lights to warn that the generator is

enabled.

The generator signal is routed to any source selected on the switch

bank above the TALK switch. Use the signal to test the loudspeaker

system and line up connected equipment. Pink noise is useful for

quickly testing the full range frequency operation and phasing/polarity

of loudspeakers. The 1kHz tone is better suited to lining up

equipment with its steady reading on the meters.

WARNING: We recommend you turn off the signal generator

once you have finished using it to test and line up your system.

This will prevent accidental operation during the show.

POWER

-3

-12

-16

-30

-20

-9

-6

+16

+10

2TRK

TO LR

2TRK REPLAY

1-2

AUX

3-4

AUX

5-8

AUX

9-10

AUX

MTX3-4

MTX1-2

LATCH

L-R

MAXMIN

TALKBACK

OSC/NOISE

TALK

L-R

9-10

MONITOR

2TRK

AUX

MTX4

MTX3

MTX2

MTX1

100

PFL/AFL

MONITOR

STEREO

+10OO

9-10

AUX

1kHz OSC

PINK NOISE

PHONES

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Allen-Heath GL2800 Seite 24

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