Mackie U.420 User's Manual
Contents
1. 15 LOW EQ This gives up to 10 dB of boost for the frequency range below 300 Hz and the lows are muted in the kill posi tion In the center position U low EQ has no effect The frequency range below 300 Hz represents the realm of bass drums bass guitar fat synth patches and lower down to some really serious male singers 16 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 controls are set to more than minimum The aux bus feeds the aux outputs 5 typically out to an external processor Each channel s stereo signal retains it s stereo image as it is sent to the aux bus This is great for keyboard players who work with stereo sounds from stereo effects processors A look at the block diagram may shed some 3 light on the aux signal path but you can skip A this part if you like The following diagram shows just one channel but each channel adds to the aux bus and main bus in the same way Main Level Set 3f 3 BandEQ L R AuxL Aux R Level L Aux Out L 2 gt eV oy R SV o Aux Sum Aux Out R The channel signals go through the preamplifier and into the EQ The level control 17 allows you to adjust how much of the channel appears on the main mix bus The aux control 16 allows you to adjust how much of each channel appears on the aux bus e The aux o2. P plication do not use the control panel during the same session or there might be a conflict A problem occurred during hardware installation Your new hardware might not work properly VERY IMPORTANT Found New Hardware x Loud Technologies Inc U 420 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 10 You wil get another impertinent warning this The installer places a shortcut to the console me aon installing me Sanaa It s okay on your desktop 420 Click Continue Anyway U 420 Console Hardware Installation MACKIE A The software you are installing for this hardware LI 420 Audio has nat passed Windows Logo testing to verify its compatibility 44 i kHz v A 2 O with Windows AP Tell me why this testing is important l a Continuing your installation of this software may impair or destabilize the correct operation of your system either immediately or in the future Microsoft strongly iims T recommends that you stop this installation now and contact the hardware vendor for software that has HA aM passed Windows Logo testing Te 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 11 The drivers and control panel will be installed on your computer e Adjust the latency by clicking and
3. e TRS stereo aux bus outputs e evel set LEDs and gain controls allow easy optimization of each channel e Stereo main meters with overload lights e Large easy to use main level control e External 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 the 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 5 2 E gt This icon leads you to in depth explanations 4 zi of features and practical tips They usually 3 have some valuable nuggets of information Appendix A 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 ple
4. 256 samples The e Do not mute the channel on the DAW that more samples the higher the latency time value This is being recorded This will allow you to time value varies by sample rate as shown in this table hear a mixture of the direct hardware monitor and the through DAW signal 44 1 kHz 48kHz 96 kHz e Apply the effect of choice reverb amp emulation to the DAW track which you 198 2 0 27 12 will hear mixed in with the direct hardware monitor source 296 e As long as the latency is set low enough the timing difference between the direct It is generally accepted that delay or latency times of and through DAW signal should be small 9 9 ms or less are tolerable for musical timing accuracy enough to not cause distraction e Set the latency on your DAW to as low as the computer can handle and set the U 420 software console panel to the same value see page 25 for more information on the console 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 23 Software installation For the PC When using the mixer with a PC 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 delay of the audio passing through the mixer s FireWire interface Go to page 26 if you use a Mac Do
5. P drive any standard headphones to a very loud level We re not kidding It can cause perma nent hearing damage Even intermediate levels may be painfully loud with some headphones Be careful z amp 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 headphones and turn it down whenever you play a new source 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 18 will joyfully illumi nate indicating that the mixer is powered on and ready for some super fun 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 23 This al lows you to easily record your live performance directly to your laptop e The FireWire loop out switch 21 lets you choose if you want the FireWire input to be con
6. Typically you 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 they blink occasionally or not at all U 420 4 Channel Line Mixer 20 FW IN This control lets you adjust the signal level of the two FireWire channels coming in from your computer rela tive to the mix of channels to 4 Adjust it carefully to achieve the desired mix with the other channels If the other level controls 17 are down then the meters will show the level of the FireWire input only The FireWire input from your audio software such as Tracktion could be individual instrument tracks a mix of tracks or processed tracks 21 FW LOOP OUT 23 MAIN LEVEL In addition to a mix of channels 1 to 4 the FireWire This big handy knob adjusts the main mix output level output to the computer can contain any FireWire input at the main outputs 6 Use it wisely to turn up the if this switch is down The mains and phones are not tunes in your main speakers or to turn it down when alfected by the switch and always provide a full mix of ever you think the room could benefit from a little less channels 1 to 4 and the 2 channel FireWire inputs noise from your band e f disengaged out the FireWire output to The meters will also be affected by this control It your computer will just be the main mix from does not
7. a ground wire for the purpose of eliminating hum in the audio signals Rotate this terminal counter clockwise to loosen it wrap the end of the ground wire clockwise around the terminal and hand tighten the terminal for a secure ground connection 5 AUX Outputs These 1 4 TRS jacks provide a balanced line level output signal from the stereo aux bus Use these to connect to the inputs of an external effects processor another PA system or stage monitors You can also use unbalanced 1 4 TS connectors If you plug a cable into the left aux output jack and leave the right output Jack empty the right and left signals are summed together to provide a mono output VERY IMPORTANT The stereo aux output from these connectors is the sum of all channels whose aux level controls 16 are set to more than minimum The aux bus gives you the chance to make a second mix or send an individual channel from the mixer independent of the main level control 23 or channel level controls 17 You could use the aux output to feed stage monitors or to feed a headphone amplifier so you can wear head phones on stage This lets you get a different mix than the audience is hearing plus you get to look a lot cooler and surprisingly attractive with headphones on If you are going out to an external processor you can return its processed output to one of the mixer s line level input channels 6 MAIN OUTs These 1 4 TRS connectors provide
8. and right cords at the mixer end If the problem stays on the left side it s not the mixer but maybe your left speaker left speaker cables or left ampli fier channel 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 t helps to plug all the audio equipment into the same AC circuit so they share a common ground e Ifthe annoying humming continues ask the drum mer to leave the room or at least have him learn the words Repair For warranty repair or replacement refer to the war ranty information on page 27 Non warranty repair for Mackie products is available at a factory authorized service center To locate your nearest service center visit www mackie com click 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 autho
9. electric shock do not expose this apparatus to rain or moisture Contents IMPORTANT SAFETY INSTRUCTIONS 2 INTRODUCTION m M 4 FEATURES 4 GETTING STARIED iiniceie nist vite neieob haria ph atentos 5 HOOKUP DIAGRAMSS 6 REAR PANEL FEATURES 10 1 INSTRUMENT LINE INPUT 10 2 UNE INPUTS cisie siia npe DER n 10 3 PHONO INPUTS cscusessseatasessestessaosssontatensesass 10 4 GND TERMINAL 10 3 AUX OUTPUTS iso etras boton epe ees 10 MM MAIN OUT S 11 7 HEADPHONES OUTPUT 11 8 DC INPUT 11 9 FIREWIRE CONNECTION 11 TOP PANEL FEATURES scsassisesssssessisesanscsscsasonsasessonss 12 CHANNEL CONTROLS 12 TO LEVEL SET LED oiii troi eti etti 12 11 INSTRUMENT SWITCH 12 pau 12 S BAND EQ Me 13 EN HIGH EQ 13 VA MID e A E A 13 15 LOW EU FRA A FR REYR IR 13 TO AUK E 13 33 1 13 CONTROL SECTION cssssscsscsssnesscstssssscnsssssesaoeess 14 16 POWER LED 14 LH METERS 14 ml 14 ZI FW LOOP OUT ies oecisstisins esti to beri tino 14 22 PHONES LEVEL iaceo eit beh i na i 15 23 MAIN LEV EL 15 ZA
10. 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 accompanying the appliance Le point d exclamation l int rieur d un triangle quilat ral es
11. 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 VOL 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 Click I Agree to continue or click Cancel to exit the installation lt Back Cancel U 420 4 Channel Line Mixer The next window reminds you to make sure the U 420 is NOT connected to your computer yet Read the instructions and click Continue Mackie U 420 Installer i lol x Now you re ready for the trip Please verify that your Mackie 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 Eo proceed Click Continue to proceed with the installer or Cancel to exit the i
12. mixer pepe eT M AAA AAA Rhodes SSSSS XX XXXX II Keyboard workstation Analog Synth Headphones SATU Keyboard Controller This diagram shows a stereo keyboard workstation a groovy analog synth an electronic piano and an electric organ con nected to channels 1 4 The main outputs are fed to a pair of Mackie HR studio monitors for local monitor ing and the mixer s Big Knob controls their volume The headphone output has its own level control independent of the Big Knob The stereo aux out sends signals to the main studio recording console for tracking A laptop is connected via FireWire This laptop is loaded with awesome virtual instruments like those in applications such as Logic and a USB keyboard is connected for real time performance and recording The FireWire loop through switch on 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 create a feedback loop Only the analog inputs 1 4 will be available for recording Track it Keyboard recording station U 420 4 Channel Line Mixer HR824 Fowered Monitores Digital Video Camcorder Headphones 2 g MAIN L Y OUT MONO s S INIT s JO C dv re OO O et IC CS la A wo Video out DV Recorder 1 iPod Docking Station Video out Desktop computer and large disp
13. stereo line level signals 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 including any 2 channel FireWire input How much of a channel that is heard in the main mix is determined by that channel s level control 17 If you plug a cable into the left output jack and leave the right output jack empty the right and left signals are summed together to provide a mono output and buzz than 1 4 TS unbalanced con nections 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 VERY IMPORTANT Palanced 1 4 TRS connections offer better immunity to external noise specifically hum m Q e lt 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 22 It is not affected by the main level control 23 The headphones output is the main mix taken Just before the main level control 23 Warning The headphone amp is designed to
14. sure the FW loop switch 21 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 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 level 17 to unity U The signals going out to your computer are not affected by the main volume knob or the phones knob Monitoring When recording to computer software there are two ways to monitor the track you are recording e 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 e Ihrough 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 ET U 420 4 Channel Line Mixer Direct hardware monitoring z When in performance or live set recording 5 mode many professional audio interfaces go to significant lengths to simulate direct hardware monitoring by incorporating a zero latency monitoring engine via dedicated digital signal process ing This usually requires you to configure a separate virtual mixe
15. that channels EQ controls all turned down to the kill position perchance 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 e f you are playing a guitar or other instrument level source into channel 1 make sure the instrument switch 11 is engaged U 420 4 Channel Line Mixer 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 channel 4 s line inputs The phono inputs are internally disconnected if any thing is plugged into channel 4 s line inputs e Only line level sources should be connected to the line level inputs 2 of channels 2 8 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 faleft output is presumed dead switch the left
16. 20 kHz unity gain 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 with loop out switch engaged 0 0 5 dB Distortion THD N Main and aux output 20 Hz to 20 kHz 1 kHz input signal Line input at unity gain 4 dBu input signal Better than 0 00896 Phono input at unity gain 30 dBu input signal Better than 0 03096 FireWire output to FireWire input Better than 0 005 Phones output 20 Hz to 20 kHz 4 dBu input signal Line input at unity gain Better than 0 004 Attenuation Crosstalk Main level at unity gain 1 kHz input signal placed on any chan nel with gain knob at unity and level knob at minimum main outs 20 Hz 20 kHz Better than 85 dBu Main level at unity gain 1 kHz input signal placed on any chan nel with gain knob at unity and level knob at minimum main outs measured 20 Hz to 20 kHz with any other channel gain knob at unity and level knob at unity Better than 85 dBu Noise Characteristics Signal to Noise Ratio 20 Hz to 20 kHz ref 4 dBu Main out at unity all channel gain knobs at minimum Better than 91 dB Main out at unity all channel gain knobs at unity dummy plugs in channel 4 TRS inputs so phono is disengaged Better than 86 dB Main out at unity channels 1 3 at minimum channel 4 phono at unity gain no TRS plugs in channel 4 Better than 74 dB All channel aux knobs at unity
17. FAIRY DUST etit toro o POE pit te uS 15 APPENDIX A SERVICE INFORMATION 16 APPENDIX B CONNECTIONS 18 APPENDIX C TECHNICAL INFO 19 APPENDIX D FIREWIRE 21 SOFTWARE INSTALLATION 24 U 420 LIMITED WARRANTY 27 Need help with your new U 420 Mixer e Visit www mackie com and click Support to find FAQs manuals addendums and user forums e Email us at techmail mackie com e 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 SW0556 Rev D 02 08 2007 2008 LOUD Technologies Inc All Rights Reserved Owner s Manual 3 Introduction Thank you for choosing a Mackie U 420 mixer It contains all your favorite features in a ultra compact 4 channel line mixer along with a built in FireWire interface and a phono input for turntablists The U 420 is equally at home in recording studio ap plications or in live performances In the studio the mixer offers Mackie quality sound to sub mix outboard gear and bring it into the computer It has 4 stereo inputs that can accept any stereo device from synths samplers or a turntable Channel 1 accepts an instrument connection without the need for a DI box In live performances the mix
18. U 420 4 Channel Line Mixer with FireWire OWNER S MANUAL 2 0 s 5 8 l A O n l o ORR R E R EOR ia 666000000 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 wo 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 manufacturer A Component and cart combination should be moved with care Quick stops
19. adjust the levels to your headphones FireWire channels 1 to 4 This is a good position for outputs or the aux outputs overdubbing as any playback from your com puter can be played in your main speakers and 24 FAIRY DUST headphones while you play along with a guitar and record only the guitar via FireWire Sometimes all you need is a little bit of fairy dust to make your recording climb to number 1 in the charts If you really really believe in this imaginary control adjust it carefully to sprinkle golden fairy dust throughout your recording session Fame and fortune are just a wing beat e If pressed in the FireWire output to your away 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 E FireWire recording channels 1 4 only PRESS IN TO MAKE THIS CONNECTION FireWire recording channels 1 4 and FireWire in 22 PHONES LEVEL This controls the volume of the headphones output from off to maximum gain Warning The headphone amplifier is de signed to drive any standard headphones to a very loud level It can cause permanent hear ing damage Even intermediate levels may be painfully loud with some headphones Be careful Always start with the phones level control turned all the way down before connecting h
20. and all channel gain knobs at unity Better than 89 dB 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 Line inputs unity gain 15 dBu Phono input 77 mV rms 1kHz Input Output Characteristics Input gain control range Line input gain knob 14 to 14 dB Line input level knob Off to 10 dB Output gain control range Main level knob Off to 10 dB Channel aux knob Off to 10 dB Input Impedance Line input 100 k balanced Phono input 47 5 kQ shunt with 200 pF Maximum Output Levels Main out 15 dBu Aux out 15 dBu Phones 1 5 Vrms into 32 Q 70 mW Output Impedance Main out 120 Q Aux out 120 Q Phones 50 Q Equalization Low 10 inf dB 300 Hz Mid 110 inf dB 1 kHz High 10 inf dB 4 kHz FireWire 44 1 kHz 48 kHz 88 2 kHz 96 kHz 24 bit sample rates Resolution 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 3 watts Universal AC power supply 100 240 VAC 50 60 Hz Physical Dimensions and Weight Height 8 6 in 218 mm Width 8 8 in 224 mm Depth 3 4 in 87 mm Weight 2 5 1b 1 13 kg LOUD Technologies Inc is always boldly striving to improve our products by incorporating new and improved materi als components and manufacturing methods Therefore we re
21. ase read and digest the safety instructions on page 2 and this page before you begin using your mixer Zero the Controls I 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 Connections If you already know how you want to connect the mixer go ahead and connect the inputs and outputs the way you want them If you just want to get sound through the mixer follow these steps I Plug a signal source into the mixer This could be a e Turntable into the phono input e ine level source such as a CD player into a line level input e A guitar plugged into channel 1 s left input with the instrument switch pressed in 2 Connect cords from the main outs to your powered speakers or amplifier 3 Plugin the mixer s external power supply and con nect it to a live AC outlet to turn on the mixer 4 Ifyou 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 list
22. available for recording Track it Oh and don t forget this FireWire return can be used for any playback software application like Ableton Live Tracktor or iTunes Production studio L6 U 420 4 Channel Line Mixer SRM450 Fowered r Speakers Guitar SRM450 Fowered Stage Monitor 4 KE Headphones O OO O A n DULL Turntable with phono level out Keyboard This diagram shows a guitar connected to channel 1 plus a stereo synth and drum machine connected to channels 2 amp 3 A turntable is connected to the phono inputs on channel 4 Use the left aux send to connect to a Mackie SRM450 for stage monitoring The U 420 will automatically sum the stereo signal to mono if you use the left aux output only The main outputs are fed to a pair of Mackie SRM450s for the audience s listening pleasure 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 U 420 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 utiliz ing 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 FireWi
23. cessor e 206 MB RAM 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 to be added to the main mix from the computer FireWire stream from computer The following table shows the outputs from your com puter to the mixer s FireWire interface Computer output 1 Computer output 2 The 2 channel digital stream from the computer enters the mixer through the FireWire connector and is converted to analog audio The audio level can be adjusted using the FW in control 20 W Beware of a possible feedback loop if you are feeding the main mix back into the mixer VERY IMPORTANT FireWire stream to computer In addition to a mix of channels 1 to 4 the FireWire output to the computer can contain any FireWire input from your computer if the FW loop out switch 21 is down Eal 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 The analog audio from the mixer is converted to digi tal signals by the FireWire interface s A D converters The following table shows the outputs to your com puter from the FireWire interface Left mix of channels 1 to 4 with FW input switch down Computer input 1 or without FW in switch up Right mix of channels 1 to 4 with FW
24. chnologies 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 BI 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 above 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 e 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
25. ctriques 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 18 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 deadlines 0 25 or less Loudest parts at a rock concert WARNING To reduce the risk of fire or
26. da L Volume der Walt aH Mute Thru Ch Wetme Slider Walue au Mute M Ale n M i i 2 j ifii fs j 3 33 4l w Bog Lio 2 i rea 23 13 9 Click the Audio Devices tab and select U 420 in the Properties For drop down box A Ae Audio MIDI Setup Audio Devices MIDI Devices System Settings Default Input amp amp Built in Audio H9 Default Output Built in Audio System Output Built in Audia Properties For v Built in Audia Chek inure Configure Speaker Audie Input Audio Output Sour Line i amp auree Format 480000 Hz Teih bi E Fonmar adn Hz Tch 24hit i Ch Wolum Sheer Malus BB Mute Thra Ch Volume Slide Vist a Mute i M LE 5205 12 24 L B A ILH 1 nno 13 00 do eer Dn 44 FLU 4 Here you can see the settings for the U 420 You can also choose the U 420 as your default input or output as well as designate it to be used for the system sound output eon Audio MED Setup do DeMM MIDI Devices System Settings Default Input Default Output U 420 00011 n System Output Y L420 0001 ej Properties For f U 420 0001 E T Clerk Source F Configure Speirs Audio Input Audio Output A urt a r Touri Format 44100 0He E zch 24b8 E Format 441nan Hz zcn zdbr Hj Malum au Mule Thru Ch kum Wider Valor on Mult bI m 100 nog L a 5 You re ready to go with any Mac OS X Core Audio host application i e Tracktion Logic Cubase Nuendo Live Digita
27. 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 Number 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 optio
28. eadphones or making any connec tions Keep it down until you ve put on the headphones and turn it down first whenever you play a new source or instrument E gt Owner s Manual E Appendix A Service Information If you think your U 420 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 420 away 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 18 illuminated If not make sure the AC outlet is live e Areallthe lights out in your town If so contact your local power company 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 controls 12 are set correctly e Are
29. en while you work plug headphones into the phones jack on the front panel then set the phones knob up a little I 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 and goes off when you stop As a rough guide adjust the gain until the LED is on for about half the time dur ing your performance The LED indicates that the signal level is 0 dBu 3 Repeat for any other channels Instant Mixing 1 To get sound out of the speakers turn up the channel s level control to the U unity gain position and slowly rotate the large main control to a comfort able listening level 2 sing and play You re a star Bring in the other channels and generally have fun 9 Grease the frying pan with hog fat and turn up the heat just enough to not fill the Kitchen with fine blue smoke 4 Cook the sausages until golden brown and serve with black pudding and a pint of warm beer FireWire I See Appendix D on page 21 for details of getting started with FireWire 2 There is a nice section about recording with FireWire on page 22 9 There is no step 3 Well only this one and it is not very informative Tech writers just love numbered lists 4 There is no ste
30. er will enable you to sub mix synths computers samplers pedal boards turntables cd players and effects on stage Bands and solo artists from DJs electronic artists and singer songwriters can use the mixer to sub mix their creative tools and deliver them to the sound board The mixer s aux bus allows you to set up a separate mix to feed stage monitors or external processors You will find that the U 420 mixer is a very useful piece of equipment and we hope you will love it just as much as we did making it for you Please write your serial number here for future reference i e insurance claims tech support return authorization etc Purchased at Date of purchase BEEN UO 4 U 420 4 Channel Line Mixer FEATURES e 4 stereo line level input channels 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 e Separate FireWire modes for live performance or overdubbing e Ultra compact design with functional and ergonomic controls e 3 Band EQ on each channel with kill position e Phono preamplifier on channel 4 accepts phono level stereo signals from a turntable 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 TRS stereo headphone output
31. frequency 1 kHz in the case of the mid EQ into each equalizer circuit because we know everyone will occasionally need that 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 level 17 up if needed Be careful with the EQ or you can really upset things We ve designed a lot of boost and cut So s eS z x If all the EQ controls in a channel are turned down to the kill position then that channel is effectively muted Word DJs find it very useful to have EQ controls with a kill position in their fast paced beat based world 13 HIGH EQ This gives up to 10 dB of boost for the frequency range above 4 kHz and the highs are muted in the kill posi tion In the center position U high EQ has no effect 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 gives up to 10 dB of boost for frequencies cen tered around 1 kHz and the mid range is muted in the kill position In the center position U mid EQ has no effect 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
32. he 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 n Tracktion it is not necessary to mute the output A word about latency wait and see 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 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 moment you hear it in your headphones You are used to this la tency being very close to zero when you play your guitar through a guitar amp you hear the signal immediately 50 when you are recording and monitoring via software you want this latency to be very low We would like to set the latency as low as possible but You ll hear existing tracks playing back via the the smaller it is the harder the computer will have to FireWire in and you ll be monitoring the track you are work If the latency is very small the computer needs to recording through the U 420 s headphones or main out Work very hard to quickly tra
33. input switch down or without FW in switch up Computer input 2 Here are two examples of using the FW loop out switch Studio Overdub Tracktion playback is coming into the mixer on FireWire inputs and routing through the mains phones for you to hear 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 switch is up so the FireWire output to the computer contains all playing channels except the FireWire playback 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 switch is down so everything will be fed to the FireWire out for recording an entire set Owner s Manual EI Recording with FireWire The U 420 s built in FireWire connection allows over dub style recording to a Mac or PC digital audio work station 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 I Connect the sound source you wish to record to your audio software for example 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
34. is out input 1 is a line level input just like inputs 2 4 You can connect stereo line level sources such as CD players MP3 players keyboards drum machines and tape players You will need a DI box if connecting instrument level signals to the inputs when this switch is out 12 GAIN These knobs allow you to adjust the gain of each channel s stereo preamplifier Signals from the line level input jacks go straight to the preamplifiers Phono level signals entering the phono inputs 3 of channel 4 are first passed through an RIAA phono preamplifier to become line level signals The gain ranges from 14 dB to 14 dB and the center U position represents unity or zero gain Adjust the gain 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 LED is on for about half the time during your performance Listen for any distortion at the higher levels Adjust the gain after plugging in any input or playing a new source or instrument for the first time J BAND EQ The U 420 has 8 band equalization at carefully selected points low shelving at 800 Hz mid peaking at 1 kHz and high shelving at 4 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 300 Hz and below Peaking means that certain frequencies form a hill around the center
35. l Performer etc U 420 4 Channel Line Mixer Play a source into the U 420 and verify that your software is receiving the signals correctly Record audio and play it back to verifiy every thing is working nicely U 420 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 equipment 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
36. lay DV Recorder 2 Video Monitor This diagram shows a DV camcorder audio connected to channel 1 DVR decks connected to channels 2 and 3 and an iPod docking station connected to channel 4 The main outputs are fed to a pair of Mackie HR studio monitors for local monitoring and the mixer s Big Knob controls their volume The headphone output has its own level control independent of the Big Knob A Mac with a cinema display is connected via FireWire to the mixer The computer audio comes from a video production application like Final Cut Pro for monitoring during editing The audio inputs can also be recorded through the mixer s FireWire connection Video edit bay Owner s Manual 91 Rear Panel Features 1 INSTRUMENT LINE Input These inputs accept either 1 4 TRS balanced or TS unbalanced connectors Unlike the other inputs channel 1 s left input can accept direct instrument level signals such as from guitars without the need for a DI box For this to work press channel 1 s instrument switch 11 The guitar or other instrument will appear on both left and right of channel 1 The right input is disconnected internally If the instrument switch is out then these inputs are just like the other channel line level inputs described below 2 LINE Inputs These line level inputs accept either 1 4 TRS bal anced or TS unbalanced connectors You can connect stereo line level sources such as CD players MP3 pla
37. moving the slider in the display Owner s Manual 125 o For the Mac Selecting the device Mac PC I Ifyou have followed the preceeding instruc gt Macintosh OS X Audio MIDI Setup version 10 3 9 or later Macintosh OS X does not require FireWire drivers to be installed OS X provides a dedicated setup utility for audio and MIDI You can use the Audio MIDI Setup utility to change the default audio input and output and general system settings on your Macintosh tions for the PC or Mac connect the U 420 to your computer using the FireWire connection In your audio production software such as Tracktion select the U 420 as your input and output device The screenshot below shows the Settings area of Tracktion 3 settings list of the available Wave input output devices I Go to the Applications folder and open the rU ASTO Driver U P v enabled U 420 Out L U 420 Out R output Utilities folder v enabled U 420 In L U 420 In R input 2 Double click Audio MIDI Setup eom Au i MIDI Setup Audio Devices MIDI Devices System Settings H Default Output _ wk Built in Audio 4 System Output amp Built in Audio amp i Clock Source insernal Check E Configure Speakers Audio Input Audio Output Default Input Built in Audio Properties Far WE Built in Audio Source tem 0 0 HH Source Headphones HY Format aon O LE E Zch aber z HEJ Piirit AKDOU D Hs i ache f
38. n 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 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 F Any products returned to one of the LOUD Technologies factory authorized service centers and deemed eligible for repair or replacement
39. nected to the FireWire output for recording See page 15 for more details of this switch The FireWire interface also lets you use your com puter to play back two channels into the mixer e Left and right signals from your computer are added to the main mix The FW in control 20 allows you to adjust the level of the incoming audio being added to the main mix See Appendix D on page 21 for more FireWire details and the block diagram on page 20 Owner s Manual m Top Panel Features Channel Controls 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 LEDs are 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 passages might be lost in background noise 11 INSTRUMENT SWITCH When this switch is pressed in channel 1 s left input can accept direct instrument level signals from guitars or other instruments They will be impedance matched to the channel 1 left input without the need for a DI box The right input is disconnected n U 420 4 Channel Line Mixer When this switch
40. not connect the mixer s FireWire con nector to your computer just yet We ll tell you when it s time to do that To install the software on a PC running Windows XP SP2 1 2 Turn off any non essential applications Insert the U 420 CD ROM into your PC s CD ROM drive Click Start in the task bar then click Run and click Browse Browse to your CD drive and double click SETUP EXE Then click OK to start the installation The Installer opens Click Continue Mackie U 420 Installer zio xl 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 U 420 Click Continue to proceed with the installer or Cancel to exit the installation omen Next you will see the License Agreement Read through the text and if you are all in favor click Agree Mackie U 420 Installer IOl xl License Agreement To continue installing the software you must agree to the terms of the software Ged license agreement 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
41. nsfer the audio in and out When you play back the recording you ll hear the track It may not even be able to keep up especially if there you ve just overdubbed without un muting anything 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 Other tips computer or not enough memory e One drawback of using direct hardware moni When recording using the overdub method it is toring vs through DAW monitoring is that important to set the U 420 s latency to it s lowest oper the track you are recording will not normally able setting This means going into the audio interface be able to take advantage of any effects that property page of your recording program and setting the the DAW s mixer has to offer such as a reverb latency property to the lowest setting the device and on the vocal being recorded or a guitar amp your system will accept without any drop outs distor simulation on a directly attached instrument tion or CPU overburdening k d for this is the following One workaround for this is the following 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
42. nstallation 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 AN The software vou are installing has not passed Windows Logo testing to verify its compatibility with Windows AF Tell me why this testing rs important Continuing your installation of this software may impair or destabilize the correct operation of your system either immediately or in the future Microzoft 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 420 FireWire connection to your computer Follow the in structions and then click Next Mackie U 420 Installer I s 0 x Please plug in your Mackie U 420 now Connect the included FireWire cable between your U 420 and computer and make sure the unit is turned on IMPORTANT DO MOT SKIP THIS PART 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 lt Back Cancel 9 Wait until the Found New Hardware Wizard 12 A window will pop u
43. p 4 either Other Nuggets of Wisdom e Always turn down the main level control and phone level control 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 5 Hookup Diagrams Effecte Sampler Headphones 2 B A HR824 Fowered Monitors Drum machine iL ia Wa Ma m Jn UN Turntable with phono level out Keyboard This diagram shows a stereo synth and a drum machine connected to channels 1 amp 2 and a turntable connected to the phono inputs of channel 4 The stereo aux output sends signals to the effects sampler and the wet signal is returned into channel 3 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 U 420 provides stereo mains to the computer for record ing with most DAW applications like Tracktion Cubase or Sonar This is independent of the Big Knob as well Additionally there is a stereo return from the laptop that has its own mix level control into the mains The FireWire loop through switch on the top of the mixer makes overdubbing a breeze In its normal out position you can play back the mix from your DAW and it will not create a feedback loop Only the analog inputs 1 4 will be
44. p to let you know that the pops up Do not select any options just click installation was successful Click Finish Cancel to continue If the same screen comes Now you are ready to use the FireWire capabili back up click Cancel again ties of your U 420 Found New Hardware Wizard JMackie U 420 Installer 1 215 x Welcome to the Found New eS Hardware Wizard You may now enjoy your Mackie U 420 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 Installation of all elements was successful Click Finish to exit the installer Can Windows connect to Windows Update to search for software Yes this time only Yes now and every time connect a device No not this time Click Next to continue lt Back Wert gt Back 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 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 i Found New Hardware x AVIC Subunit Found New Hardware If you do this from within your software ap
45. r for monitoring The U 420 ALWAYS provides zero latency monitoring by design without any extra configuration Hurrah Due to the nature of its signal path the U 420 requires 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 level knob 17 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 20 to a level where you can hear the previously recorded track comfortably e Armanew track in the DAW software and mute that same DAW channel and record t
46. re 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 allow loop through of the FireWire return to the FireWire record output Live performance system Owner s Manual Fersonal Stereo Monitors SRMI150 powered monitors OK rel Oot sc locel Acoustic Guitar Main Mix to front of house Electronic Piano VANA L OUT mono OUTLAY SO 3 mono 2 Lemon w N Nord Lead l mmm imm m SSISSESSESDESS Keyboard Controller Craan This diagram shows an acoustic guitar connected to channel 1 plus a stereo performance synth like a Nord Lead on channel 2 a good organ like a Korg CX 3 on chan nel 3 and an electronic piano on channel 4 with a dab of chanel 5 behind each ear for good measure The main outputs are fed to the FOH front of house mixer for the audience s listening pleasure The stereo aux output is being sent to a pair of SRM 150s on mic stands for stereo stage monitoring A laptop is connected via FireWire This laptop is loaded with awesome virtual instruments like those in applications such as Logic and a USB keyboard is connected for real time performance Keyboardist s submixer HR824 Q Q studio monitors Q Q Aux to Electronic Piano studio
47. rized service center is located in your area Owner s Manual 1 Y d Appendix B Connections 1 4 TRS Phone Plugs and Jacks RCA Plugs and Jacks TRS stands for Tip Ring Sleeve the three connection RCA type plugs also known as phono plugs and jacks points available on a stereo 1 4 or balanced phone are often used in home stereo and video equipment and jack or plug TRS jacks and plugs are used for balanced in many other applications They are unbalanced and signals and stereo headphones electrically equivalent to a 1 4 TS phone plug SLEEVE TIP SLEEVE TIP Balanced Mono mac p 4 4 iih gjar SLEEVE RING TIP fk RCA Unbalanced Wiring Sleeve Shield Tip Hot SLEEVE 1 4 TRS Balanced Mono Wiring Sleeve Shield Tip Hot Ring Cold Stereo Headphones sk yara SLEEVE RING TIP AXA SLEEVE 4 TRS Stereo Unbalanced Wiring Sleeve Shield Tip Left Ring Right 1 4 TS Phone Plugs and Jacks TS stands for Tip Sleeve the two connection points available on a mono 1 4 phone jack or plug They are used for unbalanced signals SLEEVE SLEEVE TIP Ss eS mE ne Dimensions SLEEVE 2207 1 4 TS Unbalanced Wiring Sleeve Shield Tip Hot 224 mm U 420 4 Channel Line Mixer Appendix C Technical Info Specifications Frequency Response 20 Hz to
48. serve 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 hold ers and are hereby acknowledged 02007 2008 LOUD Technologies Inc All Rights Reserved Owner s Manual uonisod Mo 3jnejep y ui UMOYS 9Je SAUYMMIMS 3 1 ON duueaud vVy M lt Wy C LM 1 ououd ee FH 288 lt c ano xny ine f xny t o HUE m v to T 9S 9A9 m ae jeg 19497 1 ova Jayndwoy oj 99v ung IH GIN o1 MO M reg 4 i JI l EH ft kt amp Jejnduuo wo Ul M O amala O3 pueg e 6 7 sjeuueuyd seuougd lt i 9A a IMO UIEN seuoug ae T lt 2E pend ERE DE 1NO xny indino M4 01 UO pue jndur eJAeu4 L lt 4 LI n 9 8 UI lt 9JIM9JI i har 5 IAN ueg 19497 O4 puede jleuJoN TT GuU8Eu mO uem 3t ung ung Jes 1949 XIN UIEN jauueUuD nO UIEN zl A HANNA NG N N Y 1 U 420 4 Channel Line Mixer y xny 1Xny e e MO Ulen uen winsbpig pojg Appendix D FireWire System Requirements These are the minimum requirements for your com puter system to use the U 420 FireWire interface For the PC e Windows XP service pack 2 e Pentium 4 or Athlon XP processor e 256 MB RAM For the Mac e OS X 10 3 9 or higher e 4 pro
49. t 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 420 4 Channel 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 Communications ATTENTION Le pr sent appareil num rique n met pas de bruits radio le
50. 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 00 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 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 Te
51. utput is affected by the gain EQ and aux level of each channel e The aux output is not affected by the level control of each channel and it is independent of the main mix bus For an example you could set up a stage monitor for the guitar player Connect an amplifier or a powered monitor to the aux outputs 5 Set all aux level con trols to minimum then turn up the guitar channel s aux level to suit Any adjustments of the level 17 or main level 28 will not affect the stage monitor level so your guitar player will be happy and that is always a good thing Mark that one on your calender as a special day T7 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 Adjust these carefully to acheive a nice blend in your main system and headphones Turn down any unused channels Owner s Manual ET O 2 00000000 o L Q O O O 9 O N o Control Section 18 POWER LED This will light whenever the external power supply is connected to the mixer and to a live AC mains supply The mixer does not have a power switch so as long as the external power supply is connected and operating this LED should be on 19 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 23
52. yers keyboards drum machines tape players and all manner of line level goodies You might need to purchase some RCA to 1 4 mono adapters de pending upon your source component These are readily available at your local music electronics or grain and feed store These are stereo inputs the left signals appear on the left main mix bus and the right signals appear on the right main mix bus If you have a mono source component then connect it to the left input and the mono source will appear equally on the left and right of the main mix This does not apply to channel 4 U 420 4 Channel Line Mixer 3 PHONO Inputs Channel 4 s RCA jacks accept stereo phono level signals from turntables Check that your turntable has a phono level output and a moving magnet 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 signals by the fine RIAA preamplifiers inside the mixer W The phono inputs are internally disconnected if anything is plugged into channel 4 s line inputs Do not connect line level sources to these phono level inputs or the phono preamplifiers may be overloaded Use the line level inputs 2 instead VERY IMPORTANT VERY IMPORTANT 4 GND Terminal This terminal is provided to connect a ground wire from your turntable to the mixer Most turntables pro vide
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