ALLEN & HEATH ZED 420 User Manual
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ALLEN & HEATH ZED 420 User Manual

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USER GUIDE
Publication AP7028 Issue 2

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Summary of Contents for ALLEN & HEATH ZED 420

  • Page 1 USER GUIDE Publication AP7028 Issue 2...
  • Page 2 Allen & Heath ZED-4 BUS User Guide...

  • Page 3: Warranty

    Limited One Year Manufacturer’s Warranty Allen & Heath warrants the Allen &Heath -branded hardware product and accessories contained in the original packaging ("Allen & Heath Product”) against defects in materials and workmanship when used in accordance with Allen & Heath's user manuals, technical specifications and other Allen & Heath product published guidelines for a period of ONE (1) YEAR from the date of original purchase by the end-user purchaser ("Warranty Period").

  • Page 4: Packed Items

    PACKED ITEMS Check that you have received the following: DIR O UT DIR O UT DIR O UT DIR O UT DIR O UT DIR O UT DIR O UT DIR O UT DIR O UT DIR O UT DIR O UT DIR O UT DIR O UT DIR O UT...

  • Page 5: Safety Instructions

    SAFETY INSTRUCTIONS WARNINGS Read the following before proceeding : CAUTION ATTENTION: RISQUE DE CHOC ELECTRIQUE – NE PAS OUVRIR AC MAINS IN ~ FUSE T Y PE AC SUPPLY 47-63H 320VA MAX T 3.15A 20mm 220 - 240V~ 300W MAX T 5.0A 20mm 100 - 120V~ Read instructions: Retain these safety and operating instructions for future reference.
  • Page 6 SAFETY INSTRUCTIONS 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. The wires in the mains lead are coloured in accordance with the following code: TERMINAL WIRE COLOUR...

  • Page 7: Table Of Contents

    CONTENTS Thank you for purchasing your Allen & Heath ZED mixer. To ensure that you get the maximum benefit from the unit please spare a few minutes familiarizing yourself with the controls and setup procedures outlined in this user guide. For further information please refer to the additional information available on our web site, or contact our technical support team.

  • Page 8: Panel Drawings

    PANEL DRAWINGS—ZED420 This device complies with Part 15 of the FCC Rules. CAUTION Operation is subject to the following two conditions: ALLEN&HEATH RISK O F ELECTRIC SHO CK (1) this device may not cause harmful interference, and FUSE DO NOT O PEN (2) this device must accept any interference received, T1.6A L 250V 20mm including interference that may cause undesired operation.
  • Page 9 This device complies with Part 15 of the FCC Rules. CAUTION ALLEN&HEATH Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and RISK OF ELECTRIC SHO CK DO NOT O PEN (2) this device must accept any interference received, including interference that may cause undesired operation.
  • Page 10 This device complies with Part 15 of the FCC Rules. CAUTION ALLEN&HEATH Operation is subject to the following two conditions: RISK O F ELECTRIC SHO CK (1) this device may not cause harmful interference, and DO NOT OPEN (2) this device must accept any interference received, including interference that may cause undesired operation.

  • Page 11: Introduction To Zed

    INTRODUCTION TO THE ZED-4 BUS MIXERS A Technical Overview: The Allen & Heath ZED-4 mixer has been carefully and lovingly designed in the beautiful county of Cornwall in the UK and is manufactured alongside a wide range of professional audio mixing consoles. Many of the components used in ZED are exactly the same as in the larger Allen &...

  • Page 12: Specifications

    SPECIFICATIONS Operating Levels Inputs +6 to –63dBu for nominal (+17dBu in max) Mono channel (XLR) Input +10 to –26dBu (+30dBu maximum) Mono channel Line Input (Jack socket) Insert point (TRS Jack socket) 0dBu nominal +21dBu maximum Stereo Input (Jack sockets) 0dBu nominal (control = Off to +10dB) Stereo input (phono sockets) 0dBu nominal (control = Off to +10dB)

  • Page 13: Dimensions

    Dimensions DIR O UT DIR O UT DIR O UT DIR O UT DIR O UT DIR O UT DIR O UT DIR O UT DIR O UT DIR O UT DIR O UT DIR O UT DIR O UT DIR O UT DIR O UT DIR O UT...

  • Page 14: Block Diagram

    ZED-4 BLOCK DIAGRAM MIX BUSES PHANTOM POWER SWITCH +48V MONO CHANNEL MAIN OUT MAIN LR MUTE L INSERT TIP SEND BALANCED GAIN +4dBu NOMINAL +10dB LEFT MUTE 4 BAND EQUALISER FADER R INSERT MUTE LINE IN TIP SEND INSERT 100Hz RIGHT MIC IN M INSERT...

  • Page 15: Mono Input Channel

    MONO INPUT CHANNEL Direct Output Socket DIR OUT Standard 1/4” (6.25mm) Jack socket. Wired Tip=Hot(+), Ring=cold (-), Sleeve=Chassis. For recording individual channels, factory default is prefade signal (post mute). The nominal level is 0dBu and the output is impedance balanced. Microphone Input Socket Standard 3-Pin XLR socket wired as Pin 1=Chassis, Pin 2=hot (+), Pin 3=Cold (-).
  • Page 16 MONO INPUT CHANNEL HF EQ The HF (High Frequency) equaliser affects the frequency response of the higher audible frequencies. The corner frequency of 12kHz is around 3dB from the maximum cut or boost of the circuit. ZED4 HF EQ 20.00 + 15 15.00 10.00...
  • Page 17 MONO INPUT CHANNEL LF EQ The LF (Low Frequency) equaliser affects the response at the low end of the audio range. The graph shows the response of the LF EQ at maximum cut and boost. The corner frequency is 80Hz. ZED4 LF EQ 80Hz 20.00...
  • Page 18 MONO INPUT CHANNEL The pan control adjusts how the signal from the mono input channel is shared between the left and right buses and subsequently the main stereo outputs, similarly to pairs of Groups. Set to the mid position, equal amounts of signal are fed to left and right, with pan set to L, none is sent to the Right EVEN bus.

  • Page 19: Stereo Input Channel

    STEREO INPUT CHANNEL ST1 (& ST3) Phono sockets These are stereo inputs additional to the main stereo channel in- puts (below). The gain is varied by the ST1 (& ST3) level control and these inputs can be sent to either the stereo channels or straight to the L R main bus, depending on the setting of the under- panel switch.
  • Page 20 STEREO INPUT CHANNEL STEREO Channel EQ The EQ on the stereo Channel is 4 band, fixed frequency and com- prises a shelving high frequency section, a shelving low frequency section and two fixed mid frequency controls. STEREO HF EQ ZED4 STEREO HF EQ + 15 20.00 15.00...
  • Page 21 STEREO INPUT CHANNEL Auxes 1 & 2 AUX1 Auxes 1 & 2 send a mono sum of the stereo channel left & right signals sourced from pre-fader. AUX2 Auxes 3 & 4 AUX3 Again, a mono sum of the stereo channel left & right signals, the source be- ing switchable pre or post fader.

  • Page 22: Matrix Outputs & Aux Masters

    MATRIX OUTPUTS & AUX MASTERS Matrix Outputs There are two matrix sub-mix sections in ZED-4. The send controls (black & red knobs) take the post-fade signals from the Group, Left, Right and Mono mix paths and send them to the Matrix output. Matrix outputs 1 &...

  • Page 23: Group Masters

    GROUP MASTERS Group Fader The Group fader is fed with the Group mix signal via the Group Insert point. The fader has 100mm of travel and there is +10dB of gain at its maximum position. Group AFL The AFL switch allows monitoring of the Group signal after the fader but before the Mute switch.

  • Page 24: L R & M Masters & Headphones

    L R & M MASTERS and HEADPHONES Main Mix Fader PHONES LEVEL The L, R & M faders follow the mix insert points. The faders have 100mm of travel and 10dB of gain at the top. Main Mix Mute Cuts the signal from the main mix output. Illuminates red when cut.

  • Page 25: Main Meters And Talkback

    MAIN METERS & TALKBACK Main Meters PHONES The main Left & Right meters will show the signal level at the main LR mix outputs or the main M mix output depending on the selector switch below the Phones Level control. If any PFL or AFL switch is pressed the meters will show that signal level.

  • Page 26: Usb Selection And Playback

    USB SECTION & PLAYBACK USB Send Source Selection The USB source selection switches determine which signals are sent out on the USB interface. If all the switches are up the RETURN SEND main LR mix post-fade signal is sent. Other sources available are the pre-fade main LR mix, Auxes 5&6, Auxes 1&2 and Matrix 1&2.

  • Page 27: Usb Connection

    USB CONNECTION AUX OUT MAIN OUT INSERT GROUP OUT 2TRK IN INSERT INSERT INSERT INSERT INSERT 2TRK OUT INSERT MATRIX RETURN SEND STEREO INPUTS PHONES ST3 INPUT SOURCE ST3 IN 2TRK PLAYBACK SOURCE To LR To LR TB MIC To CH To CH LEVEL USB SEND SOURCE...

  • Page 28: Using Usb For Effects

    INSERT INSERT INSERT USING USB FOR EFFECTS 2TRK OUT INSERT MATRIX RETURN SEND PHONES ST3 INPUT SOURCE ST3 IN 2TRK PLAYBACK SOURCE TB MIC LEVEL USB SEND SOURCE Tal to AUX 1-4 Tal to LRM POWER pre-fade + 15 All up = LR post EQ IN Use post fade Aux 5 &...

  • Page 29: Wiring Notes

    WIRING NOTES PROCESSOR Insert cable wiring RETURN INSERT SEND GROUND RETURN SEND LINK RING TO SLEEVE TO UNBALANCE Y-Adapter Y-Adapter 2 Outputs to 1 Input RCA phono jacks adapter 1 Output to 2 Inputs RCA PHONO CABLE UNBALANCED No ! INSTRUMENT CABLE UNBALANCED UNBALANCED...
  • Page 30 Allen & Heath ZED-4 BUS User Guide...
  • Page 31 Allen & Heath ZED-4 BUS User Guide...
  • Page 32 Allen & Heath ZED-4 BUS User Guide...

This manual is also suitable for:

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