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U.420d 4-Channel Mic/Line Mixer with FireWire and DJ Features

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1. The FireWire input from your audio software such as Tracktion could be individual instrument tracks a mix of tracks or processed tracks 34 FW LOOP OUT In addition to a mix of channels 1 to 4 the FireWire output to the computer can contain the FireWire input signal if this switch is down The mains and phones are not affected by the switch and always provide a full mix of channels 1 to 4 and the 2 channel FireWire inputs e If disengaged out the FireWire output to your computer will just be the main mix from channels 1 to 4 This is a good position for overdubbing as any playback from your com puter can be played in your main speakers and headphones while you play along with a guitar and record only the guitar via FireWire 1 2 3 4 tals FireWire recording channels 1 4 only e If pressed in the FireWire output to your computer will be the mix of channels 1 to 4 including any FireWire audio coming in from your computer This is a good position to record live where your complete main performance including any input from the computer can be recorded via FireWire PRESS IN TO MAKE THIS CONNECTION FireWire recording channels 1 5 and FireWire in 35 PHONES LEVEL This controls the volume of the headphones output from off to maximum gain P signed to drive any standard headphones to a loud level t can cause permanent hearing damage Even intermediate levels may be painfully lou
2. U 4200 4 Channel Mic Line Mixer with FireWire and DJ Features OWNER S MANUAL MACKIE U 420d POWER 48V oO a 8 R R R R R EOR J N l o A I o L O O N o Important Safety Instructions Read these instructions Keep these instructions Heed all warnings Follow all instructions Do not use this apparatus near water Clean only with a dry cloth oO Ww FP P Do not block any ventilation openings Install in accordance with the manufacturer s instructions 8 Do not install near any heat sources such as radiators heat registers stoves or other apparatus including amplifiers that produce heat 9 Do not defeat the safety purpose of the polarized or grounding type plug A polarized plug has two blades with one wider than the other A grounding type plug has two blades and a third grounding prong The wide blade or the third prong are provided for your safety If the provided plug does not fit into your outlet consult an electrician for replacement of the obsolete outlet 10 Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the apparatus 11 Only use attachments accessories specified by the manufacturer PORTABLE CART WARNING Carts and stands The Component should be used only with a cart or stand that is recommended by the man
3. CROSSFADER The crossfader is used to fade between channel 3 and 4 in the main mix bus It has no effect on the aux bus or the headphones when cue is enabled When the crossfader moves left then channel 8 in creases in volume in the main outputs while channel 4 decreases in volume When the crossfader moves to the right channel 4 increases while channel 3 decreases With two turntables connected to channels 3 and 4 the crossfader allows you to set up and run a nice DJ system The characteristics of how the crossfader affects the audio signal are determined by the curve switch 26 Owner s Manual MACKIE U 420d POWER 48V Qv O L R O 7 O 0 Q 4 Q 10 Control Section 28 POWER LED This will light whenever the external power supply is connected to the mixer and Is supplying the correct DC voltage The mixer does not have a power switch so as long as the external power supply is connected and operating the mixer is powered up and this LED should be on 29 48V LED This LED will light when the 48V switch 52 is en gaged It acts as a reminder that 48 VDC phantom power is supplied by the mixer to any microphones connected to the mic inputs 1 U 420d 4 Channel Mic Line Mixer 30 METERS These meters have 8 LEDs each ranging from 20 to 13 5 OL They indicate the stereo signal strength of the main mix after the main level control 96 Typically you
4. Purchased at Date of purchase BEEN UO La U 420d 4 Channel Mic Line Mixer e Separate FireWire modes for live performance or overdubbing e Ultra compact design with functional and ergonomic controls e Stereo channels have a crossfader with a choice of contour curves e Faders on mono channels e 3 Band EQ on each channel with kill position on stereo channels and sweepable Mid fre quency on the mono channels e Mic preamplifier on each mono channel with phantom power selection e Phono preamplifiers on each stereo channel e nstrument level input option on channel 1 e Stereo aux bus allows a separate mix to be sent to stage monitors or external processors e TRS stereo main outputs e TRS stereo headphone out e TRS stereo aux bus outputs e Stereo main meters with overload lights e Cue system for cueing each channel in the headphones e Large easy to use main level control e External universal power supply e Includes Tracktion our professional easy to use totally amazing music production software HOW TO USE THIS MANUAL Please read the safety instructions on page 2 first The getting started guide on page 5 will help you get the mixer set up fast so you can start using it right away Right after that are the ever popular hook up diagrams that show you some typical setups The features section describes every knob button and connection point on the mixer roughly following th
5. The internal FireWire interface will allow the left and right main mix to be recorded on a Mac or PC computer It also allows two channels of audio from the computer to be added to the main mix PRESS IN TO MAKE THIS CONNECTION The mains and phones outputs are not af fected by the switch and always provide a full mix of channels 1 to 4 and the 2 channel FireWire input VERY IMPORTANT FireWire stream from computer The analog audio from the mixer is converted to digi The following table shows the outputs from your com tal signals by the FireWire interface s A D converters puter to the mixer s FireWire interface The following table shows the outputs to your com puter from the mixer s FireWire interface Computer output 1 Computer output 2 Computer input 1 Left mix of channels 1 to 4 with FW input switch down or without FW in switch up The 2 channel digital stream from the computer enters the mixer through the FireWire connector and is Computer input 2 Right mix of channels 1 to 4 converted to analog audio with FW input switch down or without FW in switch up The audio level can be adjusted using the FW in control 33 Here are two examples of using the FW loop out Beware of a possible feedback loop if you are EUN P feeding the main mix back into the mixer Studio Overdub Tracktion playback is coming into the mixer on FireWire inputs and routing through the mains phones for you to he
6. 1 MIC LINE Input These Neutrik combo input connectors for channels and 2 accept either balanced male XLR connectors or 1 4 TRS balanced or TS unbalanced connectors e Ifyou are using a microphone use the XLR input Professional mics usually have XLR con nectors while consumer or semi pro mics often have 1 4 connectors e Ifyou are connecting line level sources such as CD or MP3 players use the 1 4 input Input 1 can also accept direct instrument level signals such as from guitars without the need for a DI box For this to work use the 1 4 input and press channel 1 s instrument switch 11 Channel 1 and 2 are mono and the signals are equally split to the left and right of the main mix bus If your microphone is a condenser design it probably requires phantom power to operate Push in the 48V switch 32 to supply 48 VDC to pins 2 and 8 of both XLR microphone connectors Do not use phantom power with ribbon microphones 2 LINE Inputs Channel 3 and 4 have stereo line level inputs that accept either 1 4 TRS balanced or TS unbalanced con nectors You can connect stereo line level sources such as CD players MP3 players keyboards drum machines tape players and all manner of line level goodies You may need to purchase some adapters from RCA to 1 4 mono depending upon your source component These adapters are readily available at your local music or electronics store These are stereo inputs t
7. i Found New Hardware x Loud Technologies Inc U 420 10 You will get another impertinent warning this time about installing the hardware It s okay Click Continue Anyway Hardware Installation A The software you are installing for this hardware LI 420 Audio has nat passed Windows Logo testing to verify its compatibility with Windows P Tell me why this testing is important Continuing your installation of this software may impair or destabilize the correct operation of your system either immediately or in the future Microsoft strongly recommends that you stop this installation now and contact the hardware vendor for software that has passed Windows Logo testing Continue Anyway STOP Installation 11 The drivers and control panel will be installed on your computer 12 A window will pop up to let you know that the installation was successful Click Finish JMackie U 420 Installer J 215 x You may now enjoy your Mackie WAZO U 420 Installation of all elements was successful Click Finish to exit the installer Now you are ready to use the FireWire capabili ties of your U 420d Console PC only You should adjust the sample rate and latency from within your audio software application for example in Tracktion s settings tab If this is not an option in your software then use this console instead If you do this from within your software ap P plication do no
8. singers 17 AUX These controls allow you to adjust how much of the channel signal is added to the aux bus The aux bus contains the sum of all channels whose aux controls 17 or 24 are set to more than minimum For the mono channels 1 and 2 the aux signals are split and sent to both left and right aux bus The aux bus feeds the aux outputs 5 typically out to an external processor e The aux output is affected by the gain EQ and aux level of each channel e The aux output is not affected by the fader level control of each channel and it is independent of the main mix bus For an example of using the aux bus you could set up a stage monitor for the guitar player Connect an ampli fier or a powered monitor to the aux outputs 5 Set all aux level controls to minimum then turn up the guitar channel s aux level to suit his tone deaf hearing Any adjustments of the faders 19 or main level 96 will not affect the stage monitor level so your guitar player will be happy 18 CUE Normally what you hear in your headphones is the main mix If you press cue then your headphones are switched internally to listen to the channel that is cued This gives you the chance to listen to a source before you turn up its fader 19 and add it to the main mix The cue switches do not affect the main mix Just the headphones Turn down the phones level 35 before you press cue as this will protect your hearing if you have a loud so
9. want to see these meters bouncing between the 0 and the 4 LEDs It is okay if the OL LEDs light occasionally but if they light frequently or continuously turn down the main level control until the OL LEDs blink occasionally or not at all 31 CUE LED This large LED will light whenever a cue switch 18 is engaged This acts as a reminder that in your head phones you are listening to those channels whose cue switch is engaged and not the main mix 32 48V If your microphone is a condenser design it probably requires phantom power to operate Push in this switch to supply 48 VDC to pins 2 and 3 of the XLR microphone connector Dynamic microphones like Shure s SM57 and SM58 do not require phantom power However phantom power will not harm most dynamic microphones should you accidentally plug one in while the phantom power is turned on Do not use phantom power with ribbon microphones as they may be damaged Check your microphone s user s manual if you are not sure whether your microphone needs phantom power z amp E gt 33 FW IN This control lets you adjust the signal level of the two FireWire channels coming in from your computer relative to the mix of channels 1 to 4 Adjust it carefully to achieve the desired mix with the other channels If the mono channel faders 19 or stereo channel level controls 25 are turned down then the meters will show the level of the FireWire input only
10. 15 dB to 15 dB 80 Hz Mid Level 15 dB to 15 dB Mid Frequency 100 Hz to 8 kHz High 15 dB to 15 dB 12 kHz Channels 3 and 4 Low Off to 10 dB 300 Hz Mid Off to 10 dB 1 kHz High Off to 10 dB 4 kHz FireWire Sample rates 44 1 kHz 48 kHz 88 2 kHz 96 kHz Resolution 24 bit VU Meters 8 segment post Main Level meters OL 13 10 7 4 0 4 10 20 dBu Level Set LED Sensitivity 0 dBu AC Power Requirements Power Consumption 8 0 watts Universal AC Power Supply 100 VAC 240 VAC 50 60 Hz Physical Dimensions and Weight Height 10 0 in 254 mm Width 9 4 in 239 mm Depth 3 7 in 04 mm Weight 3 0 Ib 1 36 kg See the lovely dimensions drawing on the previous page LOUD Technologies Inc is always striving to improve our products by incorporating new and improved materials components and manu facturing methods Therefore we reserve the right to change these specifications at any time without notice Mackie and the Running Man are registered trademarks of LOUD Technologies Inc All other brand names mentioned are trademarks or registered trademarks of their respective holders and are hereby acknowledged Owner s Manual 23 US ASS 40 12 40 uonisod 1n0 1nejep eui Ul UMOUS 81 seuoMS ILON Hino xny MS n E lt a yp jouueuyD 184 TT Tino xny Ad J9peJ SS019 ne 7 i J9peJ SsoJ2 dujeeud Popup iU
11. T mono OUT our T L LINE DA pid O xe OS e oA Ch POWER J de I BONO Keyboards LL as un 82 SRM350 Fowered Stage Monitors Electronic Drum Kit This diagram shows an electric acoustic guitar connected to input 1 s 1 4 input a vocal microphone connected to channel 2 s XLR input a keyboard connected to input 3 and an electronic drum kit con nected to channel 4 s line input The main outputs are fed to a pair of Mackie SRM450s and subwoofers for the audience s listening pleasure The mixer s Big Knob controls their volume Use the left aux send to connect to 4 SRM350s for stage monitoring The mixer automatically sums the stereo signal to mono if you use the left channel output only A laptop is connected via FireWire The mixer provides stereo mains to the computer for recording with most DAW applications like Tracktion Cubase or Sonar Perfect for recording your set Any playback software applications like iTunes or Tracktor can be used for break music by utilizing the FireWire stereo return with its own mix level control into the mains Music Performance System U 420d 4 Channel Mic Line Mixer PA eo eo v9 Guest MC DJ REY Oy SRM350 Mic Mic Fowered SRM450 Speakers N N Fowered 96 9 Speakers Headphones M L AUX Vo OIC f t LE SE C Le Turntable with phono level output Turntable wit
12. a level where you can hear the previously recorded track comfortably e Arm anew track in the DAW software and mute that same DAW channel and record the new track on your DAW e While recording the new track you will hear the previously recorded tracks coming into the mixer s FireWire input while you simultane ously hear the current track you are recording directly through the mixer hardware e Repeat these steps until you have built up all the tracks of your recording In Tracktion it is not necessary to mute the output of the track you are overdubbing on Instead select the input to the track it will be highlighted in red and dis able the end to end function Wave Audi FILII o Dapat O treat as stereo channel pair O enable end to end You ll hear existing tracks playing back via the FireWire in and you ll be monitoring the track you are recording through the U 420d s headphones or main out When you play back the recording you ll hear the track you ve just overdubbed without un muting anything Other tips e If recording with a microphone turn down the large volume knob 86 while recording and listen through the headphones instead e f recording direct sources such as an electric guitar or a turntable you can listen with speak ers as there is no microphone present to worry about the speaker s sound leaking in e One drawback of using direct hardware moni toring vs through DAW monito
13. ar A guitar plugged into channel 1 is being recorded via the FireWire output while you listen and play along to the Tracktion playback The FW loop out switch is up so the FireWire out put contains all playing channels except the FireWire playback E F4 gt Live Performance Computer playback software like Ableton Live is being mixed to the mains with other stereo sources such as synths sam plers turntables and CD DJ players The FW loop out switch is down so everything will be fed to the FireWire out for recording an entire set Owner s Manual L25 Recording with FireWire The U 420d s built in FireWire connection allows overdub style recording to a Mac or PC digital audio workstation DAW through the FireWire cable Here are some steps showing how to record a first track and then record additional tracks while monitor ing ones that have already been recorded 1 Connect the sound source you wish to record to your audio software for example e A microphone for a voice or instrument e A line level source such as an electronic keyboard e Aturntable connected to the phono inputs e Aninstrument connected directly to the instrument input 1 with the instrument switch 11 pressed in 2 Make sure the FW loop out switch 34 is not pressed in This will ensure that during each recording pass the audio software only receives the track in progress as an audio signal and not the pre existing
14. ced signals and stereo headphones SLEEVE TIP SLEEVE TIP RCA Unbalanced Wiring Sleeve Shield Balanced Mono Tip Hot jii paris SLEEVE RING TIP 1 4 TRS Balanced Mono Wiring Sleeve Shield Tip Hot ae woe Dimensions Stereo Headphones in pras SLEEVE RING TIP WEIGHT 3 0 Ib 1 36 ka SLEEVE 10 0 in 254mm 1 4 TRS Stereo Unbalanced Wiring Sleeve Shield Tip Left Ring Right D ia GG oe WO P TIT hb l ET U 420d 4 Channel Mic Line Mixer Appendix C Technical Info Specifications Frequency Response 20 Hz to 20 kHz Mic input to any output 20 dBu in 30 dB gain 10 dBu out 0 0 5 dB Line input to any output 0 0 5 dB Phono input to any output 0 5 dB of RIAA EQ curve FireWire Output to FireWire Input 0 0 5 dB Distortion THD N Main Outputs 20 Hz to 20 kHz 1 kHz input signal Mic input 20 dBu in 30 dB gain 10 dBu out Better than 0 00496 Ch 1 and 2 line input at unity gain 4 dBu input signal Better than 0 00596 Ch 3 and 4 line input at unity gain 4 dBu input signal via cross fader VCA to main outs Better than 0 15096 Phono input at unity gain 30 dBu input signal via crossfader VCA to main outs Better than 0 15096 FireWire output to FireWire input Better than 0 00596 Aux Outputs 20 Hz to 20 kHz 1 kHz input signal Mic input 20 dBu in 30 dB gain 10
15. d goes off when you stop As a rough guide adjust the gain until the LED is on for about half the time of your performance The LED indicates that the signal level is 0 dBu 9 Repeat for the other channels if you want to Instant Mixing 1 To get sound out of the speakers turn up the channel s fader or level and slowly rotate the main control to a comfortable listening level 2 sing and play You re a star Bring in the other channels play with the crossfader and generally have fun FireWire 1 See Appendix D page 25 for details of getting started with FireWire 2 There is a nice section about recording with FireWire on page 26 Other Nuggets of Wisdom e Always turn down the main level knob and phone knob before making any connections e When you shut down your equipment turn off the amplifiers first When powering up turn on the amplifiers last Owner s Manual Hu Hookup Diagrams Acoustic Guitar and Mic HR824 Fowered Monitors lt q Studio Vocal Headphones Mic Bi Ll d Electric Guitar ep e Synth workstation miai Amplifier AT USB Combo keys pads Controller This diagram shows an acoustic guitar microphone attached to channel 1 s XLR input a vocal condens er microphone connected to channel 2 s XLR input a guitar and amp modeler like a Line 6 Pod con nected to channel 3 and a s
16. d with some headphones Be careful Warning The headphone amplifier is de z 2 E gt Always start with the phones level control turned all the way down before connecting headphones or making any connections Keep it down until you ve put on the head phones and turn it down first whenever you press cue 36 MAIN LEVEL This conveniently large knob adjusts the main mix output level at the main outputs 6 The meters will also be affected by this control It does not adjust the levels to your headphones FireWire outputs or the aux outputs Owner s Manual Appendix A Service Information If you think your U 420d has a problem please check out the following troubleshooting tips and do your best to confirm the problem Visit the support section of our website www mackie com support where you will find lots of useful information such as FAQs documentation and user forums You may find the answer to the prob lem without having to send your U 420d away These may sound obvious to you but here are some things you ean check Read on Troubleshooting No Power e Make sure the external power supply is securely seated in the DC input 8 and plugged all the way into the AC outlet e Make sure the AC outlet is live check with a tester or lamp e Is the power LED 28 illuminated If not make sure the AC outlet is live e Are all the lights out in your town If so contact your local power company
17. dBu out Better than 0 00496 Ch 1 and 2 line input at unity gain 4 dBu input signal Better than 0 00596 Ch 3 and 4 line input at unity gain 4 dBu input signal pre cross fader VCA to aux outs Better than 0 00596 Phono input at unity gain 30 dBu input signal pre crossfader VCA Better than 0 03096 Phones output 20 Hz to 20 kHz 4 dBu input signal Ch 1 or 2 line input at unity gain Better than 0 01596 Common Mode Rejection Ratio Mic input maximum gain 1 kHz Better than 60 dB Attenuation Crosstalk 1 kHz 20 Hz to 20 kHz Channel Attenuation Main level at unity gain signal placed on any channel with gain knob at unity and level knob or fader at minimum Main outs measured Better than 85 dBu Crosstalk Main Level at unity gain signal placed on any channel with gain knob at unity and level knob at minimum main outs measured with any other channel gain knob at unity and level knob at unity Better than 85 dBu Crossfader attenuation Main level at unity gain signal placed on chan nel 3 or 4 gain knob at unity level knob at unity crossfader moved to opposite channel Better than 00 dBu Noise Characteristics Equivalent Input Noise EIN 20 Hz to 20 kHz max gain Mic input 150 O source impedance Better than 7125 dBu Signal to Noise Ratio 20 Hz to 20 kHz ref 4 dBu Main Outputs Main out at unity all channel gain knobs at minimum Better than 90 dBu Line Main out at unity all channel
18. deadlines 0 25 or less Loudest parts at a rock concert WARNING To reduce the risk of fire or electric shock do not expose this apparatus fo rain or moisture Table of Contents IMPORTANT SAFETY INSTRUCTIONS 2 INTRODUCTION M 4 GETTING STARTED sn 5 HOOKUP DIAGRAMSS 6 REAR PANEL FEATURES 11 1 MIC LINE INPUT 11 Z UNE INPUTS aii vti ERE PERO IPSE 11 3 PHONO INPULS ss 11 4 GND TERMINAL 11 2 AUX QU IP UNS sisi 12 6 MAIN OU TS 12 7 HEADPHONES OUTPUT 12 Ge DC INP 12 9 FIREWIRE CONNECTION 13 TOP PANEL FEATURES scssssssssssssosissvasssnscossonsesseusores 14 CHANNEL 1 AND 2 CONTROLS 14 10 LEVEL SET LED iios ioter ertt eroe s 14 11 INSTRUMENT SWITCH 14 pu 14 S BAND EQ 14 EM e 15 14 MID EQ 15 I5 MID FREQ icona oriri ba EI iti ERR 15 I6 LOW EU iiic o rnt SOEUR 15 LE AUK 15 10 CUE s 15 19 FADER 9 15 CHANNEL 3 AND 4 CONTROLS 16 20 GAIN RM 16 21 HIGH EQ rene 16 22 MID EQ cee tee aie 16 23 LOW EQ esccssssccssssscnsssccssscecsssccssss
19. e U 420 is NOT yet physically connected to your computer We will tell you when to connect it During this installation process you will be told this software has not passed Windows Logo Testing Do not be alarmed there is nothing wrong with your system or this software Microsoft Corporation charges a fee For this service and we think they already have enough money and you deserve to keep more of yours When you get the above warning click CONTINUE ANYWAY to proceed Click Continue to proceed with the installer or Cancel to exit the installation lt Back Cancel You may get a warning about running the installer because it hasn t passed Windows Logo testing It s okay We ve tested it and it is compatible with Windows XP Click Continue Anyway A The software pou are installing has not passed Windows Logo testing to verify its compatibility with Windows P Tell me why this testing is important Continuing your installation of this software may impair or destabilize the correct operation of your system either immediately or in the future Microsoft strongly recommends that you stop this installation now and contact the software vendor for software that has passed Windows Logo testing Continue Anyway STOP Installation Now it is time to connect your U 420d FireWire connection to your computer Follow the in structions and then click Next Mackie U 420 Installer i j j xl P
20. e signal flow through the mixer from top to bottom For more information about a feature locate its number in the appropriate illustration and find it in the nearby paragraphs This icon marks information that is critically important or unique to the mixer For your own good read them and remember them VERY IMPORTANT This 1con leads you to in depth explanations of features and practical tips They usually have some valuable nuggets of information S Q es 3 lt This icon marks information that was dreamed up while the technical writer was curled up asleep under his desk Appendix shows service and repair information Appendix B is a section on connectors Appendix C shows the specs and a block diagram Appendix D shows details of the FireWire interface Getting Started READ THIS PAGEI Even if you never read manuals please read and digest the safety instructions on page 2 and this page before you begin using your mixer Zero the Controls 1 Unplug the mixer s external power supply from the mixer 2 Turn down all the gain aux and level controls and center all the EQ controls 9 Set all push button switches to their out positions 4 Inthe center section turn down the large level knob FW in knob and phones level knob 5 Set the program faders fully down and center the crossfader Connections If you already know how you want to connect the mixer go ahead and connect t
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22. g damage Even intermedi ate levels may be painfully loud with some headphones Be careful z amp E gt Always start with the phones level control turned all the way down before connecting headphones or making any connections Keep it down until you ve put on the head phones and turn it down whenever you press cue 8 DC Input This DC input connector is used to supply power to the mixer Connect the supplied external power supply here and plug the other end of the power supply into the AC mains The power LED 28 will joyfully illumi nate indicating that the mixer is powered on and ready for action The universal external power supply that comes with your mixer can accept any AC voltage from 100 VAC to 240 VAC 9 FireWire Connection FireWire IEEE 1394 is a high speed serial I O inter face for connecting digital devices The mixer has one FireWire connector for transferring digital audio to and from your computer The FireWire interface provides two audio outputs to your computer e Main mix output left and right These output signals are independent of any adjustments made to the main level control 36 This al lows you to easily record your live performance directly to your laptop e The FireWire loop out switch 34 lets you choose if you want the FireWire input to be connected to the FireWire output for recording See page 19 for more details of this switch The FireWire interface also le
23. gain knobs at unity dummy plugs in Ch 3 and 4 TRS inputs so Phono is disengaged Better than 88 dB Aux Outputs All channel aux knobs at unity with all channel gain knobs at unity dummy plugs in Ch 3 and 4 TRS inputs so Phono is disengaged Better than 00 dB Phono Main Out at unity Ch 1 and 2 at minimum Ch 3 and 4 Phono at unity gain no TRS plugs in Channel 3 or 4 Better than 74 dB FireWire Main Out at unity all channel gain knobs at minimum FireWire input level at unity Better than 87 dB Maximum Input Levels rated at 176 THD 12 dBu 415 dBu 77 mV rms 1 kHz Mic Inputs preamp gain min 3 dB Line Inputs unity gain Phono Input Input Output Characteristics Input gain control range Ch 1 and 2 input gain knob XLR 3 dB to 50 dB Ch 1 and 2 input gain knob TRS 22 dB to 25 dB Ch 1 and 2 level faders Off to 10 dB FireWire Input Level knob Off to 10 dB Ch 3 and 4 Input Gain knob 14 to 14 dB Ch 3 and 4 Input Level knob Off to 10 dB Output gain control range measured with 100 k Main Level knob Off to 10 dB Channel Aux knob Off to 10 dB Phones Level Off to 10 dB Input Impedance Mic Input 1 7 kQ balanced Line Input 50 k balanced Phono Input 47 5 kO shunted with 200 pF Maximum Output Levels Main Out 15 dBu Aux Out 15 dBu Phones 1 5 Vrms into 329 70 mW Output Impedance Main Out 120 Q Aux Out 120 Q Phones 50 Q Equalization Channels 1 and 2 Low
24. h phono level output Laptop This diagram shows two microphones connected to channel 1 and 2 and two turntables connected to channel 3 and 4 s phono inputs The main outputs are fed to a pair of Mackie SRM450s for the audience s listening pleasure The mix er s mighty Big Knob controls their volume Use the stereo aux send to connect 2 SRM350s for the booth A laptop is connected via FireWire The U 420d provides stereo mains to the computer for recording with most DAW applications like Tracktion Cubase or Sonar Perfect for recording your set Any play back software applications like Ableton Live or Tracktor can easily be part of your performance by utilizing the FireWire stereo return that has its own mix level control into the mains The FireWire loop through switch on the top of the mixer allows you to send your FireWire return through the FireWire output for recording So use Ableton Live and your analog inputs to perform and record it all at the same time on Tracktion or your DAW of choice The switch should be pressed in to al low loop through of the FireWire return to the FireWire record output DJ Performance System Owner s Manual 91 To on air feed Broadcast Microphones Ng A NN p SRM450 Fowered Speakers 4 Location PA Headphones Telephone Fatch Hybrid Interface EN Ou Broadcast Playback Device Incoming dedication of the next song to your gi
25. he details to justify an extra page or two 20 GAIN This knob adjusts the gain of the stereo preamp Signals from the line level input jacks 2 go straight to the preamp and this control Phono level signals enter ing the phono inputs 9 are first passed through an RIAA phono preamplifier to become line level The gain ranges from 14 dB to 14 dB and it should be adjusted so that the level set LEDs 10 are on for about half the time during your performance This gives you the best signal to noise ratio for the preamp U 420d 4 Channel Mic Line Mixer 21 HIGH EQ This knob gives your channel signal up to 10 dB of boost at 4 kHz and above In the Kill position the high frequency range above 4 kHz are muted In the center position the high EQ has no effect on the signal If all three EQ controls are set to kill then the channel is effectively muted 22 MID EQ This knob gives you up to 10 dB of boost at 1 KHz In the kill position the mid frequency range around 1 kHz is muted At the center position the mid EQ has no ef fect on the signal 23 LOW EQ This knob gives you up to 10 dB of boost at 300 Hz and below In the kill position the low frequency range below 300 Hz is muted At the center position the low EQ has no effect on the signal 24 AUX These stereo controls allow you to adjust how much of the channel signal is added to the aux bus The aux bus contains the sum of all channels whose aux cont
26. he inputs and outputs the way you want them If you just want to get sound through the mixer follow these steps 1 Plug a signal source into the mixer This could be a e Microphone into an XLR mic input e Turntable into a phono input e ine level source such as a CD player into a TRS line level input e lt A guitar connected to the input 1 with the instrument switch pressed in 2 Connect cords from the main outputs to the line level inputs of your powered speakers or amplifier 9 Pluginthe mixer s external power supply and con nect it to a live AC outlet to turn on the mixer 4 If you have powered speakers turn them on Other wise hook up your speakers to your amp and turn it on Adjust your powered speaker or amplifier level controls to however the manufacturer recommends This is usually all the way up Set the Levels To set the gain controls it s not even necessary to hear what you re doing at the outputs of the mixer If you want to listen while you work plug headphones into the phones jack on the front panel press the cue switch on that channel then set the phones knob up a little Play something into the selected input Be sure that the volume of the input source is the same as it would be during normal use If it isn t you might have to readjust these levels during the middle of a set 2 Adjust the channel s rotary gain control so that the level set LED comes on while you are playing an
27. he left signals appear on the left main mix bus and the right signals appear on the right main mix bus If you have a turntable with a phono level output use the phono RCA inputs 8 instead 3 PHONO Inputs These RCA jacks for channels 3 and 4 accept stereo phono level signals from turntables Check that your turntable has a phono level output and a moving mag net cartridge Turntables usually have a ground wire that needs to be connected to the ground terminal 4 The turntable s stereo phono level signals are re equalized and converted to line level by the fine RIAA preamplifiers inside the mixer The phono inputs are internally disconnected if anything is plugged into the same channel s line inputs Do not connect line level sources to these inputs because the phono preamplifiers will be overloaded Use the line level inputs 2 m D VERY IMPORTANT VERY IMPORTANT ot CD e 4 GND Terminal This terminal is provided to connect a ground wire from your turntable s to the mixer Most turntables provide a ground wire for the purpose of eliminating hum in the audio signal Rotate this terminal counter clockwise to loosen it wrap the end of the turntable s ground wire clockwise around the terminal and hand tighten the terminal for a secure ground connection Owner s Manual ni MAIN AUX UT MONO OUT 5 AUX Outputs These 1 4 TRS outputs provide stereo line level output signals from
28. ice U 420 ASIO Driver CEE audio v enabled U 420 Out L U 420 Out R output 7 Utilities folder v enabled U 420 InL 4 U 420 In R input pe 2 Double click Audio MIDI Setup ales E ses Se 9 Play a source into the U 420d and verify that qv System Settings your software is receiving the signals correctly Default input Wb Quilt in Audio Default Output Built in Audio z a n EE 4 Record audio and play it back to verifiy every LV Pepe Fon en ue B 2 thing is working nicely Clack Source lpgenal Cinch E Configure speakers Audio Input Audio Output Source t 1 H8 Source Headphones 1 WE J Format 4006 0 Hs be 2ch 2abix n Format AKOUD D Ha ich 24b Mj V lum der Value ag Mule Thru Ch volume aider Value dE Mute id F 5 M 1 p qae hun 12 de C O Ds 47111 E a D s 33 13 puri LEDO 3 Click the Audio Devices tab and select U 420 in the Properties For drop down box Note that it says U 420 and not U 420d that s all OK aoe Audio MIDI Setup SRE WIC Devices System Settings Default Input ak Built in Audio WW Default Output amp Built in Audio cm iet eaten Output Properties For s Built in Audio Chek fusurcm Configure Speakers Audio Input Audio Output Soe he Loree br Format 480000 Hz Tih 24hit rmat aso 0 Hz Ich 24hit i Ch Volume Sider Value dB Mute Thing Ch Volume Slider LIIS d Mute M 4 Hereyou can see the set
29. l inputs The phono inputs are disconnected internally when a 1 4 connector is plugged into the same channel e Only line level sources should be connected to the line level inputs 2 of channels 3 and 4 e f possible listen to the signal with headphones plugged into the input source device If it sounds bad there it s not the mixer causing the problem Bad Output e Is the associated level control if any turned up e fa left output is presumed dead switch the left and right cords at the mixer end If the problem stays on the left side it s not the mixer Noise Hum e Check that your turntable s audio ground wire is connected to the ground terminals 4 e Turn down each channel one by one If the noise disappears it s coming from whatever is plugged into that channel Check your whatever e Check the signal cables between the input sources and the mixer Disconnect them one by one When the noise goes away you ll know which input source is causing the problem e Sometimes it helps to plug all the audio equipment into the same AC circuit so they share a common ground e Hungry Try the all you can eat lunchtime buffet at the Bombay Palace in downtown Woodinville Repair For warranty repair or replacement refer to the war ranty information on page 81 Non warranty repair for Mackie products is available at a factory authorized service center To locate your nearest service center visit www mackie com c
30. lease plug in your Mackie U 420 now U 420 Connect the included FireWire cable between your U 420 and computer and make sure the unit is turned on IMPORTANT DO NOT SKIP THIS PARTI Count your fingers and toes or do anything meaningless for the next 10 seconds then NOTE When you plug in the U 420 Windows will present a Found New Hardware dialog box Please cancel out of this Windows dialog box and then click Next to proceed with installation 9 Wait until the Found New Hardware Wizard pops up Do not select any options just click Cancel to continue If the same screen comes back up click Cancel again Found New Hardware Wizard Welcome to the Found New ey Hardware Wizard Windows will search for current and updated software by looking on your computer on the hardware installation CD or on the Windows Update Web site with your permission Can Windows connect to Windows Update to search for software C Yes this time only Yes now and every time connect a device C No not this time Click Next to continue Do not worry about the various popup warnings even the one that says a problem occurred Pay no attention to the man behind the curtain i Found New Hardware x AVIC Subunit ecycle Bin i Found New Hardware 4 problem occurred during hardware installation Your new ecycle Bin hardware might not work properly 4 MEO 2 22PM Ld
31. left signals are summed together to provide a mono output If you plug a cable into the left main output z 2 E gt In U 420d 4 Channel Mic Line Mixer MIC LINE MIC LINE CR KT SZ NZ w I2 Balanced 1 4 TRS connections offer better 4 ea immunity to external noise specifically hum and buzz than 1 4 TS unbalanced connec tions Because of this it is the preferred interconnect method especially in cases where very long lengths of cable are being used A long unbalanced cable carries with it more opportunity for noise to get into the system having balanced cables means very little noise will enter the system If you must use an unbalanced connection keep the cable length to 10 feet or less 3 meters 7 HEADPHONES Output This 1 4 TRS stereo jack is where you plug in your stereo headphones The headphone volume is controlled by the phones level control 35 It is not affected by the main level control 36 The headphones output is either the main mix taken just before the main level control or if a cue button 15 is pressed the headphones play back the cue bus instead This allows you to cue up a source in the head phones before turning up its fader and adding it to the main mix The cue light 81 reminds you if any channel has its cue button engaged Warning The headphone amp may drive the headphones to a loud level It can cause permanent hearin
32. lick Support and select Locate a Service Center Service for Mackie products living outside the United States can be obtained through local dealers or distributors If you do not have access to our website you can call our Tech Support department at 1 800 898 3211 Monday Friday 7 am to 5 pm Pacific Time to explain the problem Tech Support will tell you where the nearest factory authorized service center is located in your area Owner s Manual EI Appendix B Connections gt XLR Connectors 1 4 TS Phone Plugs and Jacks The mixer s combo inputs accept 8 pin male XLR con TS stands for Tip Sleeve the two connection points nectors These are wired as follows according to stan available on a mono 1 4 phone jack or plug They are dards specified by the AES Audio Engineering Society used for unbalanced signals SLEEVE 1 4 TS Unbalanced Wiring Sleeve Shield U COLD Tip Hot s s s 0 XLR Balanced Wiring Pin 1 Shield Pin 2 Hot 4 RCA Plugs and Jacks Pin 3 Cold RCA type plugs also known as phono plugs and jacks are often used in home stereo and video equipment and TRS Phone Plugs and Jacks in many other applications They are unbalanced and electrically equivalent to a 1 4 TS phone plug TRS stands for Tip Ring Sleeve the three connection points available on a stereo 1 4 or balanced phone jack or plug TRS jacks and plugs are used for balan
33. mber Have your Mackie product s serial number ready You must have a Service Request Number before you can obtain factory authorized service e Pack the product in its original shipping carton Also include a note explaining exactly how to duplicate the problem a copy of the sales receipt with price and date showing your daytime phone number and return street address no P O boxes or route numbers please and the Service Request Number If we cannot duplicate the problem or establish the starting date of your Limited Warranty we may at our option charge for service time and parts e Ship the product in its original shipping carton freight prepaid to the authorized service center Write the Service Request Number in BIG PRINT on top of the box The address of your closest authorized service center will be given to you by Technical Support or it may be obtained from our website Once it s repaired the authorized service center will ship it back by ground shipping pre paid if it qualified as a warranty repair Note Under the terms of the warranty you must ship or drop off the unit to an authorized service center The return ground shipment is covered for those units deemed by us to be under warranty Note You must have a sales receipt from an authorized Mackie dealer for your unit to be considered for warranty repair IMPORTANT Make sure that the Service Request Number is plainly written on the shipping carton No receipt
34. mix from the computer as well 9 Set the gain knob 12 at the top of the channel you are using to an appropriate level for the source being recorded using the level set LED 10 as a guide Once the gain has been set set the channel fader 19 to unity 0 dB The signals going out to your computer are not affected by the main volume knob 36 or the phones knob 35 4 Ifyou are recording an acoustic source through a microphone monitor it through headphones not through speakers This will prevent sound from the speakers from leaking into the micro phone If working in this fashion turn down the main volume knob 36 and instead turn up the phones knob 85 for safe listening levels in the headphones Monitoring When recording to computer software there are two ways to monitor the track you are recording 1 Direct hardware monitoring Listen to the track you are recording directly off of your mixer while also listening to previously recorded tracks on your DAW software as they are fed back into the mixer 2 Through the DAW monitoring where you monitor the track you are recording after its round trip through the computer software along with any previously recorded tracks U 420d 4 Channel Mic Line Mixer Direct hardware monitoring When in performance or live set recording mode many professional audio interfaces 3 go to significant lengths to simulate direct hardware monitoring by incorpo
35. mmunications ATTENTION Le pr sent appareil num rique n met pas de bruits radio lectriques d passant las limites applicables aux appareils num riques de class A de class B selon le cas prescrites dans le r glement sur le brouillage radio lectrique dict par les ministere des communications du Canada 19 Exposure to extremely high noise levels may cause permanent hearing loss Individuals vary considerably in susceptibility to noise induced hearing loss but nearly everyone will lose some hearing if exposed to sufficiently intense noise for a period of time The U S Government s Occupational Safety and Health Administration OSHA has specified the permissible noise level exposures shown in the following chart According to OSHA any exposure in excess of these permissible limits could result in some hearing loss To ensure against potentially danger ous exposure to high sound pressure levels it is recommended that all persons exposed to equipment capable of producing high sound pres sure levels use hearing protectors while the equipment is in operation Ear plugs or protectors in the ear canals or over the ears must be worn when operating the equipment in order to prevent permanent hearing loss if exposure is in excess of the limits set forth here Sound Level dBA Slow Response Duration Per Day In Hours Typical Example Duo in small club Subway Train Very loud classical music Dave screaming at Steve about
36. ng accuracy Higher latency settings are fine and even necessary when in live record or performance mode The same is true for mix down mode especially when you start add ing lots of plug ins Owner s Manual Software installation For the PC When using the mixer with a PG it is necessary to first install the drivers and the control panel The con trol panel allows you to set the sample rate and adjust the latency of the audio passing through the mixer s FireWire interface If you use a Macintosh computer please jump ahead to page 380 The U 420d and U 420 share the same install er so the screenshots say U 420 even though you have a U 420d No worries VERY IMPORTANT Do not connect the mixer s FireWire con nector to your computer just yet We will tell you when e ES gt To install the software on a PC running Windows XP SP2 1 Turn off any non essential applications 2 Insert the U 420d CD ROM into your PC s CD ROM drive 3 Click Start in the task bar then click Run and click Browse Browse to your CD drive and double click SETUB EXE Then click OK to start the installation Mackie U 420 Installer 2 121 x Welcome to the Mackie U 420 Installer You are about to install the Following elements on your computer All drivers needed by the Mackie U 420 Recording System control panel that allows you to view and adjust settings on your LI 420 Click C
37. ng via software you want this latency delay time to be as low as possible We would like to set the latency as low as possible but the smaller it is the harder the computer will have to work If the latency is very small the computer needs to work very hard to quickly transfer the audio in and out It may not even be able to keep up especially if there are lots of tracks lots of automation and or lots of plug ins in your work If this happens your audio may stop or drop out Drop outs may also occur if you have a slower computer or not enough memory When recording using the overdub method it 1s important to set the U 420d s latency to it s lowest oper able setting This means going into the audio interface property page of your recording program and setting the latency property to the lowest setting the device and your system will accept without any drop outs distor tion or CPU overburdening The buffer is an area of computer memory that your DAW uses to hold audio as it works The smaller the buffer the faster audio gets in and out of your com puter and the lower the latency The size of the buffer is measured in samples Depending on your system a low setting is typically between 64 and 256 samples The more samples the higher the latency time value This time value varies by sample rate as shown in this table It is generally accepted that delay or latency times of 9 9 ms or less are tolerable for musical timi
38. no warranty service E LOUD Technologies reserves the right to inspect any products that may be the subject of any warranty claims before repair or replacement is carried out LOUD Technologies may at our option require proof of the original date of purchase in the form of a dated copy of the original dealer s invoice or sale receipt Final determination of warranty coverage lies solely with LOUD Technologies E Any products returned to one of the LOUD Technologies factory authorized service centers and deemed eligible for repair or replacement under the terms of this warranty will be repaired or replaced LOUD Technologies and its authorized service centers may use refurbished parts for repai or replacement of any product Products returned to LOUD Technologies that do not meet the terms of this Warranty will not be repaired unless payment is received for labor materials return freight and insurance Products repaired under warranty will be returned freight prepaid by LOUD Technologies to any location within the boundaries of the USA or Canada G LOUD Technologies warrants all repairs performed for 90 days or for the remainder of the warranty period This warranty does not extend to damage resulting from improper installation misuse neglect or abuse or to exterior appearance This warranty is recognized only if the inspection seals and serial number on the unit have not been defaced or removed H LOUD Technologies assumes
39. no responsibility for the timeliness of repairs performed by an authorized service center I This warranty is extended to the original purchaser This warranty may be transferred to anyone who may subsequently purchase this product within the applicable warranty period for a nominal fee A copy of the original sales receipt is required to obtain warranty repairs or replacement J This is your sole warranty LOUD Technologies does not authorize any third party including any dealer or sales representative to assume any liability on behalf of LOUD Technologies or to make any warranty for LOUD Technologies Inc K THE WARRANTY GIVEN ON THIS PAGE IS THE SOLE WARRANTY GIVEN BY LOUD TECHNOLOGIES INC AND IS IN LIEU OF ALL OTHER WARRANTIES EXPRESS AND IMPLIED INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE THE WARRANTY GIVEN ON THIS PAGE SHALL BE STRICTLY LIMITED IN DURATION TO ONE YEAR FROM THE DATE OF ORIGINAL PURCHASE FROM AN AUTHORIZED MACKIE DEALER UPON EXPIRATION OF THE APPLICABLE WARRANTY PERIOD LOUD TECHNOLOGIES INC SHALL HAVE NO FURTHER WARRANTY OBLIGATION OF ANY KIND LOUD TECHNOLOGIES INC SHALL NOT BE LIABLE FOR ANY INCIDENTAL SPECIAL OR CONSEQUENTIAL DAMAGES THAT MAY RESULT FROM ANY DEFECT IN THE MACKIE PRODUCT OR ANY WARRANTY CLAIM Some state do not allow exclusion or limitation of incidental special or consequential damages or a limitation on how long warranties last so some of the ab
40. nt sold and delivered within the U S and Canada by LOUD Technologies Inc or its authorized dealers B For faster processing register online at www mackie com or you may fill out and mail in the product registration card included along with this manual C Unauthorized service repairs or modification of Mackie products will void this warranty To obtain repairs or replacement under warranty you must have a copy of your sales receipt from the authorized Mackie dealer where you purchased the product It is necessary to establish purchase date and determine whether your Mackie product is within the warranty period D To obtain warranty repair or replacement 1 Call Mackie Technical Support at 800 898 3211 7 AM to 5 PM Monday through Friday Pacific Time to get authorization for repair or replacement Alternately go to the Mackie website click Support www mackie com support and follow the instructions for reporting a warranty issue and submitting a request for an advance replacement 2 Advance Replacement Mackie will ship a replacement unit to you along with an invoice for the suggested retail price of the replacement unit You must return the defective unit immediately to cancel the invoice If you do not return the defective unit within 30 days you must pay the full amount stated in the invoice to satisfy your debt 3 Repair When you call Mackie Technical Support explain the problem and obtain a Service Request Nu
41. nying the appliance Le point d exclamation l int rieur d un triangle quilat ral est employ pour alerter les utilisateurs de la pr sence d instructions importantes pour le fonctionnement et l entretien service dans le livret d instruction accompagnant l appareil 1 U 420d 4 Channel Mic Line Mixer 12 Use only with a cart stand tripod bracket or table specified by the manufacturer or sold with the apparatus When a cart is used use caution when moving the cart apparatus combination to avoid injury from tip over 13 Unplug this apparatus during lightning storms or when unused for long periods of time 14 Refer all servicing to qualified service personnel Servicing is required when the apparatus has been damaged in any way such as power supply cord or plug is damaged liquid has been spilled or objects have fallen into the apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped 15 This apparatus shall not be exposed to dripping or splashing and no object filled with liquids such as vases or beer glasses shall be placed on the apparatus 16 The AC adapter is used as the power disconnect device and should remain readily accessible to the user 17 This apparatus does not exceed the Class A Class B whichever is applicable limits for radio noise emissions trom digital apparatus as set out in the radio interference regulations of the Canadian Department of Co
42. ontinue to proceed with the installer or Cancel to exit the installation oed 4 The Installer opens Click Continue Next you will see the License Agreement Read through the text and if you are all in favor click Agree LOUD TECHNOLOGIES INC END USER LICENSE AGREEMENT By clicking on the I Agree button installing copying or otherwise using the Software you agree to be bound by the terms of this License Agreement IF you do not agree to the terms of this License Agreement click on the Cancel button and or do not install the Software 1 License YOU MAY use the Software in conjunction with your LOUD Technologies hardware you may use the Software on as many computers as you want so long as each computer is connected to an appropriate piece of LOUD hardware You may install another copy of the Software in the event that the first Software installation is unusable YOU MAY NOT a distribute copies of the Software or the documentation to others b modify rent lease or grant sublicenses or other rights to the Software and c use xl Click I Agree to continue or click Cancel to exit the installation lt Back Cancel U 420d 4 Channel Mic Line Mixer The next window reminds you to make sure the U 420d is NOT connected to your computer yet Read the instructions and click Continue Mackie U 420 Installer IOl xl Now you re ready for the trip Please verify that your Macki
43. ove limitations and exclusions may not apply to you This warranty provides specific legal rights and you may have other rights which vary from state to state Owner s Manual Lu 16220 Wood Red Road NE Woodinville WA 98072 USA United States and Canada 800 898 3211 Europe Asia Central and South America 425 487 4333 Middle East and Africa 31 20 654 4000 Fax 425 487 4337 www mackie com E mail sales mackie com
44. rating a zero latency monitoring engine via dedicated digital signal process ing This usually requires you to configure a separate virtual mixer for monitoring The U 420d ALWAYS provides zero latency monitoring by design without any extra configuration Hurrah Due to the nature of its signal path the U 420d re quires the use of direct hardware monitoring as follows e Arm the track you wish to record onto on your DAW software e On the track you have just armed press that track s mute button so that while recording you do not hear the return of that track com ing from the computer This will ensure you do not mix the direct track you are monitoring with the duplicate of the track on the DAW as it is being recorded You do not want to hear the direct and DAW track of the same source simultaneously as the DAW version might be slightly delayed and the combination of the two will produce a filtered sound e Make sure that the DAW s input meters show a healthy level and if it needs to be increased or decreased adjust the signal s channel fader 19 not the gain knob 12 e Press record on the DAW and record the track Overdubbing To overdub additional tracks while listening to previ ously recorded ones follow these steps e Unmute the previously recorded track in the DAW It will now play out of the DAW s main L R mix into the FW input of the mixer e Set the level of the FireWire in knob 33 to
45. rding studio the mixer offers Mackie qual ity sound to sub mix outboard gear and bring it into the computer It has 2 stereo channels that can accept any stereo device from synths samplers or turntables and bring it directly into the DAW It can interface a DJ rig right to the DAW as well Two mono channels allow mic or line connections and channel one also accepts an instrument connection without the need for a DI box In live performances the mixer will enable you to sub mix synths computers samplers pedal boards turn tables CD players microphones and effects on stage in your rig Bands and solo artists from DJs electronic art ists and singer songwriters can use the mixer to sub mix their creative tools and deliver them to the sound board and send an aux mix to stage monitors Generally speaking the U 420d mixer is way up there with sliced bread and Swiss army knives Swiss army bread We hope that you will just love it as much as we did making it for you FEATURES e 2 stereo channels with line level and phono level inputs e 2mono channels with mic level and line level inputs e Built in FireWire 2x2 interface provides easy input from computer to the main mix and easy outputs to the computer from the main mix It has 24 bit resolution and 44 1 48 88 2 and 96 kHz sample rates Please write your serial number here for future reference i e insurance claims tech support return authorization etc a
46. ring is that the track you are recording will not normally be able to take advantage of any effects that the DAW s mixer has to offer such as a reverb on the vocal being recorded or a guitar amp simulation on a directly attached instrument without introducing an unacceptable amount of latency One workaround is as follows e Set the latency on your DAW to as low as the computer can handle and check the U 420d software console panel shows the same value see page 29 for more details e Do not mute the channel on the DAW that is being recorded This will allow you to hear a mixture of the direct hardware monitor and the through DAW signal e Apply the effect of choice reverb amp emulation to the DAW track which you will hear mixed in with the direct hardware monitor source e As long as the latency is set low enough the timing difference between the direct and through DAW signal should be small enough to not cause distraction A word or three about latency Latency describes the amount of time it takes the input signal to pass through the system and reach the output When recording a guitar and monitoring through software it is the amount of time it takes from the moment you strike your guitar string to the mo ment you hear it in your headphones You are used to this latency being very close to zero when you play your guitar through a guitar amp you hear the signal imme diately So when you are recording and monitori
47. rlfriend Sharon This diagram shows two broadcast vocal microphones connected to channels 1 and 2 for two hosts the on air talent A broadcast playback device such as a 360 Systems Instant Replay is connected to channel 3 A telephone hybrid interface is connected to channel 4 inputs via a mono Y cable The left aux output feeds the telephone hybrid input The main outputs are sent to the on air feed and or to a pair of Mackie SRM450 speakers for location PA Typically by a left right split i e the right channel connects to the on air feed and the left channel goes to the first SRM450 then loops through to another SRM450 the mixer s Big Knob controls their volume The headphone out has its own level control independent of the Big Knob The Aux send provides audio to the telephone patch or hybrid for placing callers on the air Chan nels 1 2 amp 3 are turned up ideally to unity gain so the caller can hear the on air talent and any music playback but not their own channel s ch 4 signal The FireWire loop through switch on the top of the mixer is in its normal out position so you can record the mix of the broadcast to a DAW program on the laptop Only the analog inputs 1 4 will be recorded Best of all you can still play back audio from the laptop for broadcast without it looping back into the U 420d Broadcast Radio Remote U 420d 4 Channel Mic Line Mixer Rear Panel Features
48. rols 24 or 17 are set to more than minimum The aux bus feeds the aux outputs 5 typically out to an external processor The aux bus is stereo so the left and right aux signals are separate and may be used for feeding stereo processors for example See aux 17 on page 15 for more details 25 LEVEL These level controls allow you to adjust how much of the channel signals appear on the main mix bus They have no effect on the level of signals going onto the aux bus but they do affect the levels going onto the cue bus if the cue button 18 is pressed After the level control the stereo signals are sent through a voltage controlled amplifier VCA that is af fected by the position of the crossfader 27 26 CURVE This switch affects how the crossfader operates and allows for some fast crossfading DJ work In the slow position up the crossfade from chan nel 8 to channel 4 occurs linearly over the complete movement of the crossfader For example channel 3 is maximum and channel 4 minimum when the crossfader is fully left and channel 8 is minimum and channel 4 maximum when the crossfader is fully right In the fast position down the crossfade from chan nel 3 to channel 4 occurs over a small movement of the crossfader For example channel 8 is maximum and channel 4 minimum when the crossfader is fully left and channel 3 is minimum and channel 4 maximum when the crossfader is moved just slightly to the right 27
49. sesssseeeee 16 lt S 2E LL 17 Q 25 LEVEL 17 26 CURVE secccccsssecccccccscsssssscccsecernssesecseeeen 17 27 CROSSFADER scssssscesssessssssssssessseseseeee 17 CONTROL SECTION mens 18 28 POWER LEDs 18 29 ABV LEDs 18 30 METERS sense 18 31 CUE LED cesscssscsscossssccssscsccsssseccssssecessssee 18 VR a ac RR RO 18 33 FW INL ee etr tritt Eben 18 34 FW LOOP OUT 19 35 PHONES LEVEL ee 19 36 MAIN LEVEL use 19 APPENDIX A SERVICE INFORMATION me 20 APPENDIX B CONNECTIONS csscoocssccssssconssccosess 22 APPENDIX C TECHNICAL INFO 23 APPENDIX D FIREWIRE mens 25 SOFTWARE INSTALLATION eesecee 28 U 420d LIMITED WARRANTY eeecccennecee 31 Need help with your new U 420d mixer Visit www mackie com and click Support to find FAQs manuals addendums and user forums Email us at techmail mackie com Telephone 1 800 898 3211 to speak with one of our splendid technical support representatives Monday through Friday from 7 a m to 5 p m PST Part No SW0557 Rev D 02 08 2007 2008 LOUD Technologies Inc All Rights Reserved Owner s Manual 3 Introduction Thank you for choosing a Mackie U 420d mixer It con tains all your favorite features in a ultra compact mixer along with a built in FireWire interface easy controls and a crossfader The U 420d is equally at home in recording studio ap plications or in live performances In the reco
50. t but if you max the EQs on every channel you ll get mix mush Equalize subtly and use the left sides of the knobs cut as well as the right boost You can create many interesting and useful EQ changes by turning the knobs down and adjusting the faders 19 up if needed S z There is a lot of boost and cut available be K az 13 HIGH EQ This knob gives the channel signal up to 15 dB of boost and cut at 12 kHz and above At the center posi tion the high EQ has no effect on the signal Use it to add sizzle to cymbals and an overall sense of transparency or edge to keyboards vocals guitar and bacon frying Turn it down a little to reduce sibilance or to hide tape hiss 14 MID EQ This knob gives you up to 15 dB of boost and cut at a frequency set by the mid freq 15 control At the center position the mid EQ has no effect on the signal Midrange EQ is often thought of as the most dynamic because the frequencies that define any particular sound are almost always found in this range 15 MID FREQ This knob allows you to set the frequency of the mid EQ control It varies from 100 Hz up to 8 kHz with a frequency of 600 Hz when centered 16 LOW EQ This knob gives you up to 15 dB of boost and cut at 80 Hz and below At the center position the low EQ has no effect on the signal Frequencies below 80 Hz represent the realm of bass drums bass guitar fat synth patches and lower down to some really serious male
51. t use the control panel during the same session or there might be a conflict E amp You can use the console for a quick check of the set tings and to make sure they are the same as your audio software settings The installer places a shortcut to the console 4 Y on your desktop U 420 Console vu v u a T m ll II ims DE Si e Adjust the sample rate by clicking on the arrow in the sample rate window The arrow disap pears if your local software has control e Adjust the latency by clicking and moving the slider in the display It looks like a crossfader but only adjusts the latency Owner s Manual For the Mac Selecting the device Mac PC 1 Ifyou have followed the preceeding instruc Macintosh OS X Audio MIDI Setup tions for the PC or Mac connect the U 420d to version 10 39 or later your computer using the FireWire connection 2 Inyour audio production software such as Macintosh OS X does not require FireWire drivers Tracktion select the U 420d as your input and tobe installed OS X provides a dedicated setup utility output device The screenshot below shows the for audio and MIDI You can use the Audio MIDI Setup Settings area of Tracktion 3 O utility to change the default audio input and output and i settings list of the available Wave input output devices general system settings on your Macintosh 1 Goto the Applications folder and open the Wave dev
52. tached to channel 1 s XLR input a vocal condens er microphone connected to channel 2 s XLR input two turntables are connected to channel 3 and 4 s phono inputs and a drum machine and keyboard workstation are attached to their line inputs Note Each turntable is disconnected whenever a 1 4 plug is inserted into a line input on the same channel so physically pull out the 1 4 plug whenever you want to play a record The main outputs are fed to a pair of Mackie HR studio monitors for control room listening and the mixer s Big Knob controls their volume The headphone out has its own level control independent of the Big Knob A laptop is connected via FireWire The mixer provides stereo mains to the computer for recording with most DAW applications like Tracktion Cubase or Logic This is independent of the Big Knob as well The laptop is loaded with awesome virtual instruments like those in applications such as Logic and a USB key pads combo controller is connected for real time performance and recording The FireWire loop through switch on the top of the mixer makes overdubbing a breeze In it s normal out position you can play back the mix from your DAW and it will not loop back through the FireWire Only the analog inputs 1 4 will be available for recording Track it Music Production Studio 2 Owner s Manual SRM450 Fowered opea kere Microphone iib SWA1501 Wy Fowered Subwoofers MAIN L OU
53. the aux bus You can connect these outputs to the inputs of an external effects processor another PA system or stage monitors You can also use unbalanced 1 4 TS connectors The stereo aux output is the sum of all channels whose aux level controls 17 or 24 are set to more than minimum This gives you the chance to make a second mix or send an individual channel from the mixer inde pendent of the main level control 36 You could use the aux output to feed stage monitors or to feed a headphone amplifier so you can wear head phones and look cool on stage You will hear a different mix than the audience is hearing P jack and leave the right output Jack empty the right and left signals are summed together to provide a mono output If you plug a cable into the left aux output 2 E gt If you are going out to an external processor you can return its processed wet output to one of the mixer s line level input channels 6 MAIN Outputs These 1 4 TRS outputs provide stereo line level sig nals from the main mix Connect these to the balanced inputs of the active speakers or power amplifier s powering your main speakers The main mix is the sum of all active channels cur rently playing and any FireWire input How much of each channel that is heard in the main mix is de termined by each channel s level control and by the crossfader ny jack and leave the right output jack empty the right and
54. tings for the U 420d You can also choose it as your default input or output as well as designate it to be used for the system sound output 98 Audio MIDI Setup EAO DESEE MIDI Devices System Settings Default Input Y uadi ig Default Output Y U 420 0001 ay System Output Y U 420 0001 zr Properties For v U 420 0001 a 0 Clock Source Configure Speakers Audio Input Audio Output S ur a z 5naunrm Format 44100 0H Dell ahan M Format 441000 Hz Ve zcn zabr E Ch Volume Mider Malum au Mute Thru Ch Wobume Wider Valor SE Mult 1 M os Lo nog L El 5 You re ready to go with any Mac OS X Core Audio host application i e Tracktion Logic Cubase Nuendo Live Digital Performer etc DJ bunny U 420d 4 Channel Mic Line Mixer U 420d Limited Warranty Please keep your sales receipt in a safe place A LOUD Technologies Inc warrants all materials workmanship and proper operation of this product for a period of one year from the original date of purchase You may purchase an additional 24 month Extended Warranty for a total of 36 months of coverage Visit our website and follow the Product Registration links for details www mackie com If any defects are found in the materials or workmanship or if the product fails to function properly during the applicable warranty period LOUD Technologies at its option will repair or replace the product This warranty applies only to equipme
55. to get power restored e f no LEDs are illuminated and you are certain that the external power supply is working it will be necessary to have your mixer serviced There are no user serviceable parts inside Refer to Repair on the next page to find out how to proceed Bad Channel e Check the connections from your source are made securely and that the cords are in good condition e Check the channel s program gain 12 or 20 are set correctly e Are that channel s EQ controls all turned down e sthe signal source turned up Make sure the signal level from the selected input source is high enough to light the level set LEDs 10 when ad justed with the gain controls U 420d 4 Channel Mic Line Mixer e f you are playing a guitar or other instrument level source into channel 1 make sure you are using the 1 4 input and that the instrument switch 11 is engaged e Ifyou are playing a guitar into channel 2 8 or 4 you need to use a DI box for the correct impedance match and high frequency fidelity e Try the same source signal in another channel set up exactly like the suspect channel e Only phono level sources turntables should be connected to the RCA phono inputs 8 The phono section requires your cartridge to be a moving mag net type It may be too low to amplify the low levels of a moving coil type e If there is no phono output check that there is nothing plugged into the channel s line leve
56. ts you use your com puter to playback two channels into the mixer e Left and right signals from your computer are added to the main mix The FW in control 33 allows you to adjust the level of the incoming audio being added to the main mix See Appendix D on page 25 for more FireWire details and the block diagram on page 24 Owner s Manual ET Top Panel Features L R D e m e e Channel 1 and 2 controls Channel 1 and 2 are mono channels fed by the combo input connectors 1 The controls are mono but the final output of each channel is split equally and added to the left and right main mix 10 LEVEL SET LED These LEDs are used with the gain control 12 to set the level of the channel s preamplifier gain just right They light when the signal level is 0 dBu Adjust the gain control so these LEDs come on while you are playing and go off when you stop As a rough guide adjust the gain until the LED is on for about half the time during your performance Setting the gain correctly will ensure that the pre amplifier s gain is not too high where distortion could occur and not too low where your quieter exquisitely delicate performance might be lost in background noise 11 INSTRUMENT SWITCH When this is pressed in channel 1 s 1 4 TRS input can accept direct instrument level signals from guitars or other instruments They will be impedance matched to the channel 1 input
57. ufacturer A Component and cart combination should be moved with care Quick stops excessive force and uneven surfaces may cause the Component and cart combination to overturn CAUTION AVIS RISK OF ELECTRIC SHOCK DO NOT OPEN RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER OR BACK NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED PERSONNEL ATTENTION POUR EVITER LES RISQUES DE CHOC ELECTRIQUE NE PAS ENLEVER LE COUVERCLE AUCUN ENTRETIEN DE PIECES INTERIEURES PAR L USAGER CONFIER L ENTRETIEN AU PERSONNEL QUALIFIE AVIS POUR EVITER LES RISQUES D INCENDIE OU D ELECTROCUTION N EXPOSEZ PAS CET ARTICLE A LA PLUIE OU A L HUMIDITE The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons Le symbole clair avec point de fl che l int rieur d un triangle quilat ral est utilis pour alerter l utilisateur de la pr sence l int rieur du coffret de voltage dangereux non isol d ampleur suffisante pour constituer un risque d l ctrocution The exclamation point within an equilateral triangle is intended to alert the user of the presence of important operating and maintenance servicing instructions in the literature accompa
58. urce playing The mixer contains a left and right cue bus so you will hear left and right mono in the headphones for channels 1 and 2 and stereo for channels 3 and 4 If you have more than one cue button engaged then you will hear a mix of all cued channels The cue light 91 will also come on as a reminder that you are not listening to the main mix in the headphones 19 FADERS These custom faders allow you to adjust how much of the channel signal appears on the main mix bus They have no effect on the level of signals going onto the aux bus or the cue bus If the faders are all the way down the channels can still be cued and heard in the head phones or added to the aux bus After the fader the mono channels are split and added to the left and right main mix Owner s Manual E POWER 48V Qv O L R Qo Q 10 9 0 vw Channel 3 and 4 controls Channel 2 and 8 are identical stereo channels fed by the line level input connectors 2 or the phono level inputs 3 The controls are stereo and the final output of each channel is added to the left and right main mix These channels are set up with a crossfader ideal for DJ work with two turntables The EQ controls are also DJ friendly with a kill position where each frequency band can be turned fully off if needed The controls are much the same as the mono chan nels 1 and 2 but there are enough differences in t
59. without the need for a DI box U 420d 4 Channel Mic Line Mixer When this switch is out input 1 is just like input 2 and you will need a DI box if connecting instrument level signals to the inputs D GAIN This knob adjusts the gain of the preamp for any mi crophone or line level source you care to plug into the input jacks 1 The gain ranges from 8 dB to 50 dB of gain for microphone level signals coming in on the XLR inputs and from 22 dB to 25 dB for line level signals coming in on the 1 4 TRS inputs Adjust the gain control so the level set LEDs 10 come on while you are playing and go off when you stop As a rough guide adjust the gain until the LEDs are on for about half the time during your performance This gives you the best signal to noise ratio for the preamp Adjust the gain after plugging in any input or playing a new source or instrument for the first time 3 BAND EQ The mono channels have 3 band equalization at carefully selected points low shelving at 80 Hz mid peaking at a variable frequency from 100 Hz to 8 kHz and high shelving at 12 kHz Shelving means that the circuitry boosts or cuts all frequencies past the specified frequency For example rotating the low EQ knob clockwise will boost the bass at 80 Hz and below Peaking means that certain frequencies form a hill around the center frequency in the case of the mid EQ FA cause you may occasionally need i
60. ynthesizer workstation connected to channel 4 A northbound train loaded with pig iron is leaving Little Rock at 3 30 The main outputs are fed to a pair of Mackie HR studio monitors for control room listening and the mixer s Big Knob controls their volume The headphone output has its own level control and each chan nel has a cue switch independent of the Big Knob A laptop is connected via FireWire The mixer provides stereo mains to the computer for recording with most DAW applications like Tracktion Cubase or Logic This is independent of the Big Knob as well The laptop is loaded with awesome virtual instruments like those in applications such as Logic and a USB key pads combo controller is connected for real time performance and recording The FireWire loop through switch on the top of the mixer makes overdubbing a breeze In it s normal out position you can playback the mix from your DAW and it will not loop back through the FireWire Only the analog inputs 1 4 will be available for recording Track it Music Production Studio 1 6 U 420d 4 Channel Mic Line Mixer Acoustic Guitar and mic HR824 Fowered Monitors Synth workstation LL steed Ch Headphones L LINE 3 e oft ca Y eV ttp Y D USB Keyboard Controller Laptop Turntable with phono level output Turntable with phono level output This diagram shows an acoustic guitar microphone at

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