MixWizard Series WZ20S Stereo Audio Mixing Console USER GUIDE Publication AP3634
Limited One Year Warranty This product has been manufactured in the UK by ALLEN & HEATH and is warranted to be free from defects in materials or workmanship for period of one year from the date of purchase by the original owner. To ensure a high level of performance and reliability for which this equipment has been designed and manufactured, read this User Guide before operating.
Important Safety Instructions WARNINGS - Read the following before proceeding : CAUTION ATTENTION: RISQUE DE CHOC ELECTRIQUE –NE PAS OUVRIR Read instructions: Retain these safety and operating instructions for future reference. Adhere to all warnings printed here and on the console. Follow the operating instructions printed in this User Guide. Do not remove covers: Operate the console with its covers correctly fitted.
Important Mains plug wiring instructions. The console is supplied with a moulded mains plug fitted to the ac mains power lead. Follow the instructions below if the mains plug has to be replaced.
Introduction ALLEN & HEATH continues its commitment to provide high quality audio mixing equipment engineered to meet the exacting requirements of today’s audio business. The WZ20S compact stereo mixing console brings you the latest in high performance technology and offers the reassurance of over two decades of console manufacture and customer support. This user guide presents a quick reference to the function and application of the WZ20S. We recommend that you read this fully before starting.
Overview of the MIXWIZARD 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.
Front Panel Layout For clarity only the first two stereo channels are shown.
Rear Panel Layout MIX 2 L OUT MIX 1 STEREO INPUTS L L INSERT INSERT 19-20 IN R R R MIX2 MIX1 L L OUT OUT R R IN AUX 6 M 17-18 A 15-16 A IN 13-14 A IN IN MONO INPUTS 11-12 A IN 9-10 A IN A 7-8 IN A IN L L L L L L L R R R R R R R R B IN IN B IN B B IN IN B IN B IN B L/M L/M L/M L/M L/M L/M L/M L/M R R R R R R R R AUX 5 AUX 4 AUX 3 AUX 2 3 2 1 INSERT INSERT INSERT A L B 4 INSERT 5-6 IN IN IN IN 4 3 2
Specifications 0dBu = 0.775 Volts rms +4dBu = 1.23V rms 0dBV = 1 Volt rms -10dBV = 316mV rms Console Specifications Maximum output level Internal headroom XLR +26dBu into >2k ohm load TRS jack +21dBu into >2k ohm load Channels +21dB Mix to output +23dB Peak indicators Turn on 5dB before clipping Meters MIX 1,2 / MONITOR Peak reading 12 led 3 colour Frequency response +0/-1dB 20Hz to 50kHz Distortion < 0.
Installing the Console The MixWizard Series features the ALLEN & HEATH Quick Change Connector (QCC) system. The rear connector pod may be hinged and locked into either of two positions. Rear connectors allow desktop operation with the control panel sloped at a convenient 15 degrees. Underside connectors allow 19" rack mounting in a compact 10U space. The connector position can be easily changed at any time to fit your application.
Connecting Mains Power TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE. WARNING - THIS APPARATUS MUST BE EARTHED. SUPPLY VOLTAGE RANGE: CAUTION AC MAINS IN ~ 100 - 240V ~ 47-63Hz ~ 30W MAX OFF ON AVIS: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR. FUSE 100 - 240V~ T500mA 250V 20mm WARNING: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE REPLACE FUSE WITH SAME TYPE AND RATING ATTENTION: REMPLACER LE FUSIBLE AVEC UN DES MEMES CARACTERISTIQUES.
Plugging Up The System The MixWizard WZ20S uses professional grade 3 pin XLR, 1/4" TRS jack and RCA PHONO sockets. To ensure best performance, we recommend that you use high quality audio cables and connectors, and take time to check for reliable and accurate cable assembly. It is well known that most audio system failures are due to faulty interconnecting leads.
Connecting the Mono Channel 4 INSERT IN 4 DIR OUT 4 MIC 4 + 48V INPUT The input provides both an XLR and a TRS jack connector. The XLR is normalled through the jack connector. This means that plugging in a jack overrides the XLR source. Plug a microphone into the XLR socket leaving the jack unplugged. Plug a line level source into the jack socket and select the front panel PAD switch. For line level sources on XLR plug into the XLR leaving the jack unplugged and select PAD.
Connecting the Stereo Channel 19-20 A IN L R B IN L/M R INPUT A This provides a pair of RCA phono sockets for connection to stereo sources such as CD players, MiniDisc and record decks. The inputs are unbalanced and can accept line levels signals from as low as 2 –0dBu to a high +10dBu. The level is matched to the console using the front panel GAIN A control. The signal can be mixed with Input B if required by pressing both A and B ON switches together.
Connecting Mix 1 and Mix 2 Outputs MIX 2 L OUT R MIX 1 L L INSERT INSERT R R MIX2 MIX1 L L OUT OUT R R M INSERT Both MIX1 and MIX2 provide insert points for left and right channels. You do not need to plug anything into the insert socket for normal operation. It is a break point that lets you plug in an external signal processor such as a limiter or equaliser if required. Plugging in a jack breaks the signal path after the buss mix amp and before the master fader.
Connecting Auxiliary Outputs AUX 6 AUX 5 AUX 4 AUX 3 AUX 2 AUX 1 SENDS AUX 1-6 OUTPUTS Each of the six auxiliary sends is available on a 3 pole TRS jack socket. These are impedance balanced to reduce noise pickup on long cable runs. Connect to balanced or unbalanced equipment as shown above. Nominal operating level is 2 –dBu but gain is available using the send master control to drive +4dBu if required. Use pre-fade auxes to feed stage monitor, foldback and cue systems.
User Connector Options SYS-LINK OUT REMOTE (option) (user connections) SYS-LINK OUT REMOTE (option) (user connections) SYS-LINK OUTPUT The console is supplied with a blank plate fitted here. An optional kit of parts is available to install a 25 pin D-connector and circuit card which provides all console outputs on a single connector. This is convenient when connecting the WZ20S as an expander to another console.
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 6 –0dBu to 2 –0dBu with PAD switched off, and 3 –0dBu to +10dBu with PAD on.
AUXILIARY SENDS These controls route the channel signal to the AUX 1 to 6 mix. These are independent from the main mix and can therefore provide additional outputs for monitors, effects, zone, recording feeds and so on. PAD -30dB 40 30 GAIN 50 PAD - 10 20 60 30 100Hz 0 HF 12kHz -15 + 15 3kHz 1k 5k 700 7k 500Hz 15kHz 0 MF1 -15 + 15 180Hz 60 300 45 450 35Hz 1kHz 0 MF2 -15 + 15 AUX LEVEL Adjusts the level of the channel signal in each mix.
Stereo Input channel DUAL INPUTS A and B The stereo channel features two stereo inputs with independent gain control and on/off switching. One source may be selected at a time, or both may be mixed together further increasing the number of simultaneous inputs to the mix. This means that you can leave two stereo sources permanently connected to the console without the need to repatch or readjust the gain settings.
AUXILIARY SENDS These controls route the channel signal to the AUX 1 5 0 10 GAIN -5 15 -10 to 6 mix. These are independent from the main mix and can therefore provide additional outputs for monitors, effects, zone, recording feeds and so on. 20 ON 5 0 10 GAIN -5 15 -10 20 ON MONO 0 HF AUX LEVEL Adjusts the level of the channel signal in each mix. Turn fully anticlockwise to turn the signal off, fully clockwise for a maximum +6dB boost. The normal ‘0’ position is marked.
Master Section POWER ON Green LED lights when the console is powered. 1 POWER ON MIX1 MIX2 MIX2 EXT1 IN EXT2 IN 0 OO 0 + 6 OO + 6 PFL PRG + 16 + 16 + 9 + 9 + 6 + 6 + 3 + 3 0 0 -3 -3 -6 -6 -9 -9 -12 -12 -16 -16 -20 -20 -30 L SPLIT PFL WARNING Some headphones are more sensitive than others and can produce higher output levels.
AUXILIARY MASTERS These provide six independent mix outputs which can be used to provide foldback, cleanfeed and cue monitors, effects and recording sends, zone feeds and any other special mixes required. 1 POWER ON MIX1 MIX2 AUX 1-6 Adjust the output level of each auxiliary mix. Turning the control clockwise adjusts from fully off to +4dB boost. The normal ‘0’ position is marked.
CONSOLE MONITOR SYSTEM PFL PRG SPLIT PFL + 16 +9 The WZ20S provides extensive console monitoring facilities to satisfy a wide range of applications including broadcast and club mixing. Every signal can be monitored individually or within any mix. Two systems are provided, headphones and local monitor. Two sets of headphones may be connected at the same time. The local monitor can be used to feed a stereo booth, stage or studio speaker system.
1 POWER ON MIX1 MIX2 MIX2 EXT1 IN EXT2 IN 0 0 + 6 OO + 6 OO PFL PRG + 16 + 16 + 9 + 9 + 6 + 6 + 3 + 3 0 0 -3 -3 -6 -6 -9 -9 -12 -12 -16 -16 -20 -20 -30 L SPLIT PFL -30 R L MIX1 R MONITOR PFL 4 5 6 3 8 1 9 0 OO 0 PFL ENABLE With this underpanel switch in its down position PFL automatically overrides the selected source in the local monitor output. The switch is tamperproof to prevent accidental operation.
Application Notes The WZ20S is well suited to many high performance live, recording and installed sound applications including multi source stereo mixing, dual output submixing, club systems, low end broadcast, production mixing… and more. The following notes present suggestions for these applications. Of course, you may find different or better ways to suit the particular requirements of your application.
Dual Output Submixing The WZ20S provides a versatile 4 mono, 8 dual stereo format for submixing a wide variety of sources. Typical applications include on-stage stereo keyboard mixing, and submixing effects returns to the main FOH console. Balanced inputs Use the stereo B input TRS jacks when connecting to long stage cable runs. This reduces interference pickup. Select +48V for any microphones that require phantom power.
Broadcast Installation The WZ20S provides an affordable yet professional broadcast console for community, hospital and other small radio stations. It offers broadcast specific features without the huge cost of dedicated broadcast consoles. Mono Inputs Plug in the presenter and guest microphones. These can also be used as telephone channels fed from suitable hybrid units. Select the PAD switch for any line level sources.
Club Installation The WZ20S versatility and number of source inputs makes it ideal as a high performance installed club console. Hybrid application The console provides facilities for dance/DJ and live/cabaret mixing. As a ‘house’ mixer it would be expected to alternate between performance DJ’ing, house DJ, live acts, cabaret, karaoke and background music. Dance/DJ Plug the music sources such as CD and record decks into the stereo channels.
Options The WZ20S is designed to offer the utmost flexibility to satisfy your application without modification. However, the following internal options are provided to allow customisation to satisfy the more specialist applications. This work requires access to the internal assemblies and resoldering of circuit card links and should be carried out by competent technical personnel only.
WZ20S CUE SHEET M ixW izard 5 0 -5 PAD PAD PAD -30dB -30dB -30dB 40 30 40 30 GAIN 50 PAD 50 50 - 10 20 60 30 -5 20 60 30 -15 60 30 100Hz + 15 5 0 5 0 10 -5 7k -15 15kHz 0 MF1 + 15 5k 7k -15 500Hz 0 10 GAIN 5k 7k 500Hz + 15 + 15 -15 180Hz 0 -15 300 45 450 300 45 450 1kHz 0 35Hz -15 + 15 0 LF 1kHz 0 MF2 + 15 0 -15 -15 450 35Hz 1kHz 0 20 -10 20 -10 10 GAIN -5 5 0 10 GAIN -5 10 GAIN -5 15 5 0 10 GAIN -5 10 GAIN -5 15 15 M
WZ20S User Guide TIP= + 2= + RING= - TIP= + RING= RETURN + - GAIN TIP= SEND -30dBu PAD +48V GAIN GAIN RIAA OPTION + - + - BALANCED INPUT R TIP= + -10dBV TIP= + - + ON ON - + +4dBu OPTION EXT INPUT x2 INPUT A L/MONO R L R INPUT B L/M - - MONO - LF MF2 MF1 HF LEVEL LF MF2 MF1 HF L R PEAK PRE-EQ ON 1 PRE-ON POST-ON PRE-ON 2 MONO 2 PFL POST-ON 1 TO MONITOR AUX POST-EQ PRE-EQ POST-EQ POST-FADE PRE-EQ FADER PFL POST-EQ PEAK AUX EQ IN
