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Allen Heath Pa20-cp User Manual

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Feb 16, 2019  Does a dLive user manual exist? I've just purchased a dLive system and I'm trying to understand how to use some of the features. I've got the 'Getting Started' guide, but it doesn't really give much detail. I've looked in the Allen & Heath 'Documents' section of their website for dLive but there's nothing there.

16

PA-CP User Guide

AUX SENDS

The PA Series has four auxiliary sends.

These provide independent mixes from the channels. They
have many applications, the most common being foldback
monitor and effects sends. They can also be used for
additional special feeds such as recording or clean feed.

FB1

Pre-fade aux send feeding the FB1 foldback monitor

output. Turn up the control to send the channel signal to the
mix, from fully off to a maximum +6dB boost. The unity 0dB
position is indicated. The send is pre-fader but post-EQ and
post-mute. This means that its level is not affected by the
channel fader but it is affected by any changes made to the
EQ. Pressing MUTE also turns off the FB1 send.

FB2

Pre-fade aux send feeding the FB2 foldback monitor

output. Similar to FB1 described above.

AUX

Post-fade aux send feeding the AUX output socket.

The AUX send is affected by the channel fader. The AUX mix
can be used for a variety of applications such as additional
effects send, independent speaker zone or recording feed.

FX

Post-fade aux send to the internal effects unit and also the

FX output socket. Turn up the control to feed a portion of the
channel signal to the effects unit where it is processed to create
effects such as reverb and delay. The FX sends let you adjust
how much effect you add to each signal in the mix.

Aux sends are referred to as ‘pre-fade' or ‘post-fade'.

This is because the signal that is routed to the send control is
sourced before (pre) or after (post) the channel fader. This is
illustrated in the BLOCK DIAGRAM in the Specification section
later in this user guide.

Effects sends are used to add effects such as

electronically simulated reverb or echo to the mix. Turning up
the FX control sends a portion of the channel signal to the
internal effects unit where it is processed before being returned
to the main mix through the FX channel. The processed ‘wet'
signal adds to the direct ‘dry' signal in the same way as the
listener would hear a direct sound followed by natural room
reverberation. The FX send is post-fader to ensure that the
balance between direct and effect signal is always the same
regardless of fader position.

Using more than one effects unit Use the AUX send to

feed another effects processor in addition to the internal effects
unit. You can also use the FX output with an external unit
instead of or mixing with the internal unit.

Foldback sends are used to provide individual or

groups of performers or backstage crew with their own monitor
mix, for example wedge speakers facing musicians on stage,
in-ear monitors, hotspot speakers, dressing room and lighting
position feeds. The mix is created by turning up the channel
FB sends according to the needs of the performers. It is not
affected by the faders which control what the audience hears.

Setting up a foldback monitor mix Start with all the

Allen & Heath Pa20-cp

channel sends turned fully down. Gradually turn up the sends
to add those sounds requested by the performers, typically the
vocals and a few lead instruments. Normal control position is
around 9 to 3'o'clock according to strength in the mix. Be
careful to avoid feedback between closely positioned mics and
speakers. Only add those sounds which are needed or
requested. Keep the mix as simple as possible and try to avoid
adding effects such as reverb which can muddy the sound on
stage and reduce the gain before feedback.

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PA-CP User Guide

5

Contents

Information

Phantom power........................13
Balanced and unbalanced connections .....13
The mic preamp ........................14
The HPF (high pass filter) ................14
The mono channel equaliser..............15
Pre and post-fade aux sends..............16
Effects sends..........................16
Foldback sends........................16
The dB fader scale ......................17
The dB explained .......................17
PFL explained .........................17
The stereo channel equaliser .............19
Wet and dry effects signals ...............20
Effects processing engines ...............22
AFL explained .........................24
Gain structure..........................24
Sub bass speakers .....................25
The amplifier design philosophy ...........26
Constant power explained................26
Front-of-house and foldback monitors......27
Different amplifier configurations...........27
Why the parametric output equaliser .......27
TRS jack ..............................28
Line level..............................28
Impedance balanced outputs .............28
SPDIF explained........................30

Tips for the user

Do not install near doors and windows that open to the outside, near fresh air vents, or anywhere that is drafty. Rapid air circulation from fans or fresh air from outside may affect the unit's alarm response time.Do not install this CO alarm in a switchor dimmer-controlled outlet.Do not install in areas where the temperature is colder than 40˚F (4.4˚C) or hotter than 100˚F (37.8˚C). Place the CO alarm where drapes, furniture or other objects do not block the flow of air to the vents.Do not install in dead air space, such as peaks of vaulted ceilings or gabled roofs, where carbon monoxide may not reach the sensor in time to provide early warning.Do not install in turbulent air from ceiling fans. Dust, grease or household chemicals can contaminate or coat the alarm's sensor, causing the unit not to operate properly.Do not obstruct the vents of the CO alarm. If you must install a Kidde CO alarm near a cooking or heating appliance, install at least 5 feet away from the appliance.Do not install in excessively dusty, dirty or greasy areas. Kidde kn-cob-lcb-a user manual.

Pa20-cp

Working with different channel sources.....13
Setting the channel gain.................13
Using the HPF (high pass filter) ...........14
Using the channel equaliser..............15
Using more than one effects unit ..........16
Setting up a foldback monitor mix .........16
Using channel pan......................17
Using the channel faders.................17
Using PFL.............................17
Using the stereo channels................18
Mixing two stereo signals into the channel...18
Sending ST1(3) direct to LR ..............18
Using the stereo channel equaliser.........19
Effects in the monitors ...................21
Using the FX channel PFL ................21
Using the effects .......................22
Checking the gain structure ..............24
Using PFL and AFL .....................25
Using the AB output equalisers............27
Using line level signals ..................28
Using balanced or unbalanced connections.28
Working with powered speakers...........29
Choosing headphones ..................29
Connecting SPDIF ......................30
Patching in speaker processors...........30
No amplifier output? ....................31
How to check speaker polarity............31

Main Topics

Important Safety Instructions ......3

Overview......................6

The PA Range..................7

Key Features...................7

Panel Layout...................8

Quick Start.....................9

Installing the Console...........10

Mains Power and Earthing .......11

Cable and Connector Information..12

Service repair manual download. The MONO Channel............13

The Mono Equaliser ............15

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The STEREO Channel...........18

The Stereo Equaliser............19

The EFFECTS Channel ..........20

MIDI and the Effects ............23

The MASTER Controls...........24

The AMPLIFIERS ...............26

Amplifier Source Select ..........27

AB Output Equaliser............27

The MASTER Connectors ........28

Specifications .................32

Allen & Heath Pa20-cp Manual

System Block Diagram..........33

Fitting the PA12-CP Rack Ears....34

Cue Sheet....................35

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