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WZ20S
User Guide
Overview of the
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WZ20S
WZ20S
The WZ20S is a compact audio mixing console with many stereo inputs. It is well suited
to mixing stereo sources such as keyboards, voice modules and effects returns, or for
recording or stage submixing. With its additional mic inputs it is also equipped for low end
broadcast, club installation and production mixing. The WZ20S complements the
MixWizard range which also includes the multi mic input WZ12DX and WZ16DX with built
in effects processors, and the WZ14:4:2+ which is dual function 4 buss live mixer.
The WZ20S has 12 input channel strips. Four mono channels accept any signal, mic or
line, on either jack or XLR. Eight stereo strips feature dual A and B inputs so that one of
two stereo sources can be selected, or they can be mixed together with individual control
of gain. This allows permanent connection of 16 stereo sources. Inputs A are on phono
pin jacks and inputs B on TRS jacks. An optional RIAA card can be fitted to the phono
inputs. The jack inputs are balanced and normalled for use with stereo or mono sources.
An additional two stereo external inputs are available and can be configured as returns to
the mix or as external inputs for monitoring only.
The mono channels provide 4 band EQ with shelving high and low, and two parametric
mid bands. The stereo channels provide 4 band EQ with shelving high and low, and two
fixed frequency mid bands. All equalisers include in/out switching.
The WZ20S provides two independently assignable stereo mix busses MIX1 and MIX2.
Each feeds a pair of balanced XLR outputs together with inserts and metering. In
addition, MIX2 includes a second stereo output on TRS jacks and a summing mono
output on balanced XLR. Mix1 can be assigned to feed MIX2 to provide a stereo
subgroup if required. 6 independent aux outputs on TRS jacks include pre/post switching
in groups of two and four. This flexible output scheme satisfies many applications
including dual stereo submixing, stereo and mono broadcast and amplifier feeds,
cleanfeed sends, zone and recording feeds.
A unique combination of monitoring features is provided to satisfy the specific
requirements of live mixing, broadcast and club install. Dedicated headphones and local
monitor outputs include separate level control. A large switch bank lets you select any
output for monitoring, automatically overriden by channel PFL selection. Two headphones
can be connected, one on the top panel, one on the rear, for example in a presenter/guest
situation. The local monitor feeds separate TRS jacks and includes mute (internally
configurable for 20dB dim) and PFL enable facilities. Split PFL can be selected to keep
the output program in the right ear while monitoring the PFL channel in the left, ideal for
broadcast or club booth monitoring. A switch allows instant checking of the stereo signal
for mono compatibility.
In keeping with the rest of the range, the WZ20S offers the QCC (Quick Change
Connector) rotating pod which can be set for 8U high 19” rack or rear connector desktop
operation. 100mm faders and professional build quality using individual channels with
nutted pots and all steel chassis provide solid reliability and easy servicing. The internal
power unit is an efficient switched mode design which allows universal connection to the
most common world wide mains voltages.
The layout is simple and intuitive and includes tamperproof underpanel switches for
configurable functions, important for broadcast and club applications.
There are several internal configuration options to further customise the console for more
specialist applications. These include aux pre/post and mono/stereo links, SYS-LINK
expander output card, RIAA preamp cards, optional switched faders for remote start/stop,
local monitor auto dim from fader or switch, and custom wiring to 25pin D connector.
These options should be configured by competent service or installation personnel. For
further details please contact your ALLEN & HEATH agent.
Finally, in keeping with the ALLEN & HEATH design philosophy, the WZ20S carries
forward the sonic purity of analog MSP (Minimum Signal Path) engineering to ensure the
very best audio performance.
