Manual Allen-Heath MixWizard Series WZ20S (page 18 of 32) (English)

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18 WZ20S User Guide

Mono Input Channel

PAD Affects both the XLR (if no TRS jack is plugged in) and the TRS jack

input to attenuate the input signal by 30dB. Press PAD when plugging in line

level sources, or when the signal is too high with the GAIN control turned down.

GAIN Adjusts the input sensitivity to match the connected source to the

console 0dB operating level. This provides a wide 70dB range with continuous

adjustment for signals from –60dBu to –20dBu with PAD switched off, and –30dBu

to +10dBu with PAD on. Use the PFL system to correctly set the gain using the

console meters.

100HZ FILTER Switches in the high pass filter to cut frequencies below 100Hz

with a slope of 12dB/octave. Use this to clean up vocals by reducing

microphone proximity popping and low frequency ambient pickup, and to filter

out hum and rumble. The filter is post-insert and pre-EQ so that it affects the

signal returned from any inserted equipment by removing the unwanted low

frequencies before equalisation.

EQUALISER The channel equaliser is a powerful tool to creatively tailor the

sound within the mix, or to deal with source problems such as poor microphone

characteristics, noise and feedback. Start with the EQ controls set to their mid

(flat) position and make sure you have chosen the best type and position of

microphone for the source. Then adjust the EQ to achieve the sound you want.

Take time to experiment with the controls so you get to learn the effect the

equaliser can have on the sound.

The WZ20S mono channel provides separate tone control over four frequency

bands including two swept frequency (parametric) mids. The frequencies in

each band may be boosted or cut by up to 15dB. The centre flat position is

detented for quick resetting.

HF Turn this control clockwise to boost and anticlockwise to cut the high

(treble) frequencies. This has a shelving response with all frequencies above

the 12kHz turning point affected. Note that frequencies below 12kHz are

affected by a decreasing amount. Use HF boost to brighten up the sound by

adding sparkle, and cut to reduce source hiss or ambient high frequency mic

pickup.

MF1 Turn the +/- control clockwise to boost and anticlockwise to cut the higher

mid frequencies. This has a bell shaped peak/dip response that has maximum

boost or cut at the selected frequency. Use the upper control to select this

centre frequency between 500Hz and 15kHz. Boosting around 3kHz can

enhance the intelligibility of vocals helping them to cut through the mix. Cutting

to notch out a ringing frequency can help to increase the gain before feedback.

MF2 This is similar to MF1 but affects the lower mid frequencies selectable

from 35Hz to 1kHz. Boosting can enhance the warmth of the sound while

cutting can reduce the effect of resonant or boomy frequencies.

LF Turn this control clockwise to boost and anticlockwise to cut the low (bass)

frequencies. This has a shelving response with all frequencies below the 60Hz

turning point affected. Note that frequencies above 60Hz are affected but by a

decreasing amount. Use LF boost to enhance low end punch, and cut to further

reduce source hum and rumble.

EQ IN Switches the equaliser in or out of the signal path. Use this to check the

effect of the control settings by comparing the equalised and unequalised

signals.

-15

60Hz

MF2

35Hz

-15

MF1

500Hz

700

-15

12kHz

GAIN

- 10

PAD

+15

1kHz

450

+15

300

180Hz

15kHz

+15

3kHz

100Hz

3060

-30dB

PAD

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Allen-Heath MixWizard Series WZ20S Manual

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