Bedienungsanleitung Allen-Heath MixWizard WZ4-16 (Seite 15 von 32) (Englisch)

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Allen & Heath 15 WZ

16:2 and 12:2 User Guide

The MONO Input Channel

+48V Switches +48VDC to the channel input XLR for powering micro-

phones or DI boxes that need phantom power. The power is current

limited through 6k8 ohm resistors to pins 2 and 3.

WARNING: Do not connect unbalanced sources or ca-

bles to inputs with phantom power selected. To avoid loud

clicks always mute the channel before switching +48V on or off

and when plugging or unplugging microphones.

PAD (LINE) Press this switch to select the channel TRS jack LINE in-

put. Release the switch to select the XLR MIC input. The XLR normals

through the TRS socket. With nothing plugged into the line input the

switch therefore becomes a PAD for the mic XLR. It attenuates the input

signal by 20dB for connection to high level microphone or line sources.

GAIN Adjusts the input sensitivity to match the connected source to

the internal 0dBu operating level of the channel. Provides a variable 50dB

range from +10 to +60dB gain (mic), or -10 to +40dB (line, pad selected).

The gain should be set using PFL so that the console meters average ‘0’

with loudest moments lighting ‘+6’. Reduce gain if the red peak indicator

lights.

HPF Switches in the channel high pass filter. This attenuates frequencies

below 80Hz by 12dB per octave. The filter is pre-insert, pre-EQ. Select

the HPF to reduce low frequency noise such as microphone popping, stage

noise and tape transport rumble.

EQ A 4-band semi parametric EQ provides independent control of four

frequency bands. HF and LF are shelving filters which affect high frequen-

cies above 12kHz, and low frequencies below 80Hz respectively. HM and

LM are bell shaped peak/dip filters which affect frequencies around a cen-

tre point which can be swept from 500Hz to 15kHz and 35Hz to 1kHz

respectively. These have a width (Q) of 1.8. All bands can be boosted or

cut by up to 15dB and have a centre detent 0dB position.

Check for the best microphone selection and placement before using the

EQ. Start with the EQ set flat and apply only as much boost or cut as is

really needed. The EQ IN button can be used to compare the EQ with a

flat response. When dealing with problem frequencies cut rather than

boost where possible.

180

35Hz

400

250

(LINE)

700

500Hz

15k

HPF

+48V

PAD

SIG

AUX

PRE

PFL

MUTE

AUX

PAN

PK!

POST

10- 10

GAIN

4060

EQ IN

20k10k5k2k1k5002001005020

-20

-15

-10

-5

0dB

+10

+15

+20 +20

+15

+10

0dB

-5

-10

-15

-20

20 50 100 200 500 1k 2k 5k 10k 20k

10k5k2k1k500200100502010

-40

-35

-30

-25

-20

-15

-10

-5

0dB

20k10k5k2k1k5002001005020

-20

-15

-10

-5

0dB

+10

+15

+20

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Allen-Heath MixWizard WZ4-16 Seite 15

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