Instruction/ maintenance manual of the product U.420 Mackie
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OWNER’S MANUAL 4-Channel Line Mixer with F ireWir e O O MA X +14 -1 4 +1 4 -14 MID LOW HIGH EQ GAI N LEVEL U U U U U U U U U O O MA X 1 2 3 4 U O O MA X LEVEL U O O MA X U +14 -1 4 U +14 -1 4 MID LO.
U.4 0 4-Channel Line Mix er U. 4 20 4-Channel Line Mix er 1. Read these instructions. 2. Keep these instructions. 3. Heed all warnings. 4. Follow all instructions. 5. Do not use this apparatus near water . 6. Clean only with a dry cloth. 7. Do not block any ventilation openings.
Part No. SW0556 Rev . D 02/08 ©2007-2008 LOUD T echnologies Inc. All Rights Reserved. Owner’ s Manual Owner’ s Manual N e e d h e lp w it h y ou r ne w U . 4 0 Mi x e r ? • V i s it w ww . m a ck ie .c o m a nd c li ck S up po rt t o n d: F A Q s , ma nu al s, a dd en du ms , an d us er f o r u ms .
4 U.4 0 4-Channel Line Mix er U. 4 20 4-Channel Line Mix er 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 Fir eWir e interface, and a phono input for turntablists.
5 Owner’ s Manual Owner’ s Manual Getting Started READ THIS P AGE!! 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 .
U.4 0 4-Channel Line Mix er U. 4 20 4-Channel Line Mix er Hookup Diagrams Production studio This diagram shows a stereo synth, and a drum machine connected to channels 1 & 2, and a turntable connected to the phono inputs of channel 4.
7 Owner’ s Manual Owner’ s Manual Live perf or mance system This diagram shows a guitar connected to channel 1, plus a stereo synth and drum machine connected to channels 2 & 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.
8 U.4 0 4-Channel Line Mix er U. 4 20 4-Channel Line Mix er K eyboardist’s submix er GND PHONO R 1 2 3 4 R L POWER 18V,1. 5A OUT MAIN OUT AUX (MONO) R L (MONO) L R L (MONO) L (MONO) L R R M a i n.
9 Owner’ s Manual Owner’ s Manual V ideo edit bay GND PHONO R 1 2 3 4 R L POWE R 18V,1 .5A OUT MAIN OUT AUX (MONO) R L (MONO) L R L (MONO) L (MONO) L R R D es k t o p c o m p u t er a n d l a r g .
10 U.4 0 4-Channel Line Mix er U. 4 20 4-Channel Line Mix er Rear Panel Features 1 . I N S T R UM E N T / L I N E I np u t 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.
11 Owner’ s Manual Owner’ s Manual 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. The stereo aux output from these connectors is the sum of all channels whose aux level controls [16] are set to more than minimum.
1 U.4 0 4-Channel Line Mix er U. 4 20 4-Channel Line Mix er T op Panel Features Channel Controls 1 0 . L E V EL S ET L ED These LEDs are used with the gain control [12] to set the level of the channel’s pr eamplifier gain just right. They light when the signal level is 0 dBu.
1 Owner’ s Manual Owner’ s Manual - B A N D E Q The U.420 has 3-band equalization at carefully selected points — low shelving at 300 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 fr equency .
14 U.4 0 4-Channel Line Mix er U. 4 20 4-Channel Line Mix er Control Section 1 8 . P O WE R LE D 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.
15 Owner’ s Manual Owner’ s Manual 1 . F W L O O P O U T In addition to a mix of channels 1 to 4, the FireW ir e output to the computer can contain any FireW ir e input, 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 FireW ir e inputs.
1 U.4 0 4-Channel Line Mix er U. 4 20 4-Channel Line Mix er Appendix A: Ser vice Information • If you ar e playing a guitar into channel 2, 3, or 4, you need to use a DI box for the correct impedance match and high frequency fidelity . • T ry the same source signal in another channel, set up exactly like the suspect channel.
17 Owner’ s Manual Owner’ s Manual Repair For warranty repair or r eplacement, r efer to the war- ranty information on page 27. Non-warranty repair for Mackie products is available at a factory-authorized service center . T o locate your nearest service center , visit www .
18 U.4 0 4-Channel Line Mix er U. 4 20 4-Channel Line Mix er 1 / 4" TRS Phone Plugs and Jacks “TRS” stands for Tip-Ring-Sleeve, the thr ee connection points available on a stereo 1/4 " or balanced phone jack or plug.
19 Owner’ s Manual Owner’ s Manual Appendix C: T echnical Info Input Impedance: Line input: 100 k Ω balanced Phono input: 47.5 k Ω shunt with 200 pF Maximum Output Lev els: Main out: +15 dBu Aux out: +15 dBu Phones: 1.
0 U.4 0 4-Channel Line Mix er U. 4 20 4-Channel Line Mix er Block Diagram L R Main L R Main Main Ou t le ve l L eve l Aux Out L L R Aux L Main Ou t L Phones level NOTE: Switches are shown in the default (ou t) p os itio n .
1 Owner’ s Manual Owner’ s Manual Appendix D: FireWire S y s t e m R e qu i r em e n t s These are the minimum r equir ements for your com- puter system to use the U.420 FireW ir e interface. For the PC: • Windows XP (service pack 2) • Pentium 4 or Athlon XP processor • 256 MB RAM For the Mac: • OS X (10.
U.4 0 4-Channel Line Mix er U. 4 20 4-Channel Line Mix er The U.420’s built in Fir eW ire connection allows over - dub style recording to a Mac or PC digital audio work- station (DA W) through the FireWir e cable.
Owner’ s Manual Owner’ s Manual * In T racktion, 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.
4 U.4 0 4-Channel Line Mix er U. 4 20 4-Channel Line Mix er 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 Fir eW ire interface.
5 Owner’ s Manual Owner’ s Manual 9. W ait 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. Do not worry about the various popup warnings, even the one that says “a problem occurred.
U.4 0 4-Channel Line Mix er U. 4 20 4-Channel Line Mix er For the Mac: M a c i n t o s h O S X A ud i o M I D I S e t u p ( v e r si o n 1 0 . . 9 o r l a t e r ): Macintosh OS X does not requir e Fir eWir e drivers to be installed. OS X provides a dedicated setup utility for audio and MIDI.
7 Owner’ s Manual Owner’ s Manual U.420 Limited W arranty Please keep your sales receipt in a safe place. A. LOUD T echnologies Inc. warrants all materials, workmanship and proper operation of this product for a period of one year from the original date of purchase.
16220 W ood-Red Road NE • W oodinville, WA 9807 2 • USA United States and Canada: 800.898.3211 Europe, Asia, Central and S outh America: 425.487 .4333 Middle East and Africa: 31.20.654.4000 F ax: 425.487 .4337 • www .mackie.com E -mail: sales@mackie.
An important point after buying a device Mackie U.420 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Mackie U.420 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Mackie U.420 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Mackie U.420 you will learn all the available features of the product, as well as information on its operation. The information that you get Mackie U.420 will certainly help you make a decision on the purchase.
If you already are a holder of Mackie U.420, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Mackie U.420.
However, one of the most important roles played by the user manual is to help in solving problems with Mackie U.420. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Mackie U.420 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
