Summary of the content on the page No. 1
4-Channel Mic/Line Mixer with FireWire and DJ Features
O W N E R ’ S M A N U A L
1 2 3 4
LEVEL LEVEL
SET SET
MIC MIC
U U
GAIN GAIN
+3 +50 +3 +50
POWER 48V
-14 +14 -14 +14
-22 +25 -22 +25
U U U U
EQ
EQ
HIGH
HIGH
12kHz
L R
-15 +15 -15 +15 KILL +10 KILL +10
U U OL U U
10
MID
MID
7
-15 +15 -15 +15 KILL +10 KILL +10
4
600 600 U U
0
MID
FREQ
4
150 1.5k 150 1.5k LOW
10
100 8k 100 8k KILL +10 KILL +10
U U 20
AUX
LOW
80Hz
-15 +15 -15 +15 MAX MAX
U
U
AUX CUE LEVEL
48V
MAX MAX MAX MAX
CUE CUE CUE CUE
CURVE
Summary of the content on the page No. 2
Important Safety Instructions 12.Use only with a cart, stand, tripod, bracket, or table specified by the 1. Read these instructions. manufacturer, or sold with the apparatus. When a cart is used, use 2. Keep these instructions. caution when moving the cart/apparatus combination to avoid injury from tip-over. 3. Heed all warnings. 13.Unplug this apparatus during lightning storms or when unused for long 4. Follow all instructi
Summary of the content on the page No. 3
Owner’s Manual Table of Contents IMPORTANT SAFETY INSTRUCTIONS ........................ 2 CHANNEL 3 AND 4 CONTROLS ....................... 16 INTRODUCTION ...................................................... 4 20. GAIN ...................................................... 16 GETTING STARTED ................................................... 5 21. HIGH EQ ................................................. 16 HOOKUP DIAGRAMS............................................... 6 22.
Summary of the content on the page No. 4
• Separate FireWire modes for live performance or overdubbing. Introduction • Ultra-compact design, with functional and Thank you for choosing a Mackie U.420d mixer. It con- ergonomic controls. tains all your favorite features in a ultra-compact mixer, • Stereo channels have a crossfader with a choice along with a built-in FireWire interface, easy controls of contour curves. and a crossfader. • Faders on mono channels. The U.420d is equally at home in recording studio ap- • 3-Band EQ on eac
Summary of the content on the page No. 5
Owner’s Manual Set the Levels Getting Started To set the gain controls, it’s not even necessary to hear what you’re doing at the outputs of the mixer. If READ THIS PAGE!! you want to listen while you work, plug headphones into the phones jack on the front panel, press the cue switch Even if you never read manuals, please on that channel, then set the phones knob up a little. read and digest the safety instructions on page 2, and this page before you 1. Play something into the selecte
Summary of the content on the page No. 6
Hookup Diagrams Acoustic Guitar and Mic HR824 Powered Monitors Studio Vocal Mic Headphones MAIN AUX L 4 3 2 1 GND OUT OUT LINE LINE (MONO) L L MIC/LINE MIC/LINE PHONO PHONO L L POWER 18V,1.5A R R R R R Laptop Electric Guitar Synth workstation USB Combo keys/pads Amplifier Controller modeller 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- nect
Summary of the content on the page No. 7
Owner’s Manual Acoustic Guitar and mic HR824 Powered Monitors Synth workstation Studio Vocal Mic Headphones MAIN AUX L 4 3 2 1 GND OUT OUT LINE LINE MIC/LINE MIC/LINE (MONO) L L PHONO PHONO L L POWER 18V,1.5A R R R R R Drum Machine ground wire USB Keyboard Controller Laptop Turntable with phono-level output Turntable with phono-level output 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, two tu
Summary of the content on the page No. 8
SRM450 Powered Speakers pole pole Microphone mount mount SWA1501 Powered Subwoofers MAIN AUX L 4 3 2 1 GND OUT OUT LINE LINE MIC/LINE MIC/LINE (MONO) L L PHONO PHONO L L POWER 18V,1.5A R R R R R Keyboards Laptop SRM350 Powered 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.
Summary of the content on the page No. 9
Owner’s Manual Guest MC DJ Mic Mic SRM350 Powered SRM450 Speakers Powered Speakers Headphones MAIN AUX 4 3 2 1 L GND OUT OUT LINE LINE MIC/LINE MIC/LINE (MONO) L L PHONO PHONO L L POWER 18V,1.5A R R R R R ground wire ground wire Laptop Turntable with phono-level output Turntable with phono-level output 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 audie
Summary of the content on the page No. 10
To on-air feed Broadcast Microphones SRM450 Powered Speakers (Location PA) Headphones MAIN AUX L 4 3 2 1 GND OUT OUT LINE LINE MIC/LINE MIC/LINE (MONO) L L PHONO PHONO L L POWER 18V,1.5A R R R R R Laptop Telephone Patch Hybrid Interface Broadcast Playback Device Incoming dedication of the next song to your girlfriend 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™ Inst
Summary of the content on the page No. 11
Owner’s Manual Rear Panel Features MAIN AUX L 4 3 2 1 GND OUT OUT LINE LINE (MONO) L L MIC/LINE MIC/LINE PHONO PHONO L L POWER 18V,1.5A R R R R R These are stereo inputs; the left signals appear on the 1. MIC/LINE Input left main mix bus, and the right signals appear on the right main mix bus. These Neutrik “combo” input connectors for channels 1 and 2 accept either balanced male XLR connectors, or If you have a turntable with a phono-level output, use 1/4" TRS balanced or TS unbalanced
Summary of the content on the page No. 12
MAIN AUX L 4 3 2 1 GND OUT OUT LINE LINE MIC/LINE MIC/LINE (MONO) L L PHONO PHONO L L POWER 18V,1.5A R R R R R Balanced 1/4" TRS connections offer better 5. AUX Outputs immunity to external noise (specifically, hum and buzz) than 1/4" TS unbalanced connec- These 1/4" TRS outputs provide stereo line-level tions. Because of this, it is the preferred interconnect output signals from the aux bus. You can connect these method, especially in cases where very long lengths of outputs to the inputs
Summary of the content on the page No. 13
Owner’s Manual 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
Summary of the content on the page No. 14
Top Panel Features 1 2 3 4 LEVEL LEVEL MIC SET MIC SET U U GAIN GAIN +3 +50 +3 +50 POWER 48V -22 +25 -22 +25 -14 +14 -14 +14 U U U U EQ EQ HIGH HIGH 12kHz L R -15 +15 -15 +15 KILL +10 KILL +10 U U U U OL 10 MID MID 7 -15 +15 -15 +15 4 KILL +10 KILL +10 600 600 U U 0 MID FREQ 150 1.5k 150 1.5k 4 LOW 10 100 8k 100 8k KILL +10 KILL +10 U U 20 AUX LOW 80Hz -15 +15 -15 +15 MAX MAX U U AUX CUE LEVEL 48V MAX MAX MAX MAX CUE CUE CUE CUE CURVE SLOW MAX MAX FAST +10 FW IN PHONES 5 0 LOOP OUT -5 3 4 -10
Summary of the content on the page No. 15
Owner’s Manual -BAND EQ 17. AUX The mono channels have 3-band equalization at These controls allow you to adjust how much of the carefully selected points — low shelving at 80 Hz, mid channel signal is added to the aux bus. The aux bus peaking at a variable frequency from 100 Hz to 8 kHz, contains the sum of all channels whose aux controls and high shelving at 12 kHz. [17, or 24] are set to more than minimum. For the mono channels 1 and 2, the aux signals are split and sent to “Shelving” m
Summary of the content on the page No. 16
1 2 3 4 LEVEL LEVEL SET SET MIC MIC U U GAIN GAIN +3 +50 +3 +50 POWER 48V -14 +14 -14 +14 -22 +25 -22 +25 U U U U EQ EQ HIGH HIGH 12kHz L R -15 +15 -15 +15 KILL +10 KILL +10 U U OL U U 10 MID MID 7 -15 +15 -15 +15 KILL +10 KILL +10 4 600 600 U U 0 MID FREQ 4 150 1.5k 150 1.5k LOW 10 100 8k 100 8k KILL +10 KILL +10 U U 20 AUX LOW 80Hz -15 +15 -15 +15 MAX MAX U U AUX CUE LEVEL 48V MAX MAX MAX MAX CUE CUE CUE CUE CURVE SLOW MAX MAX FAST +10 FW IN PHONES 5 0 LOOP OUT -5 3 4 -10 -20 MAX Channel 3 a
Summary of the content on the page No. 17
Owner’s Manual 4. AUX . CURVE These stereo controls allow you to adjust how much This switch affects how the crossfader operates, and of the channel signal is added to the aux bus. The aux allows for some fast crossfading DJ work: bus contains the sum of all channels whose aux controls In the slow position (up), the crossfade from chan- [24, or 17] are set to more than minimum. The aux bus nel 3 to channel 4 occurs linearly over the complete feeds the aux outputs [5], typically out to an
Summary of the content on the page No. 18
0. METERS These meters have 8 LEDs each, ranging from –20 to +13.5 (OL). They indicate the stereo signal strength of POWER 48V the main mix after the main level control [36]. L R OL Typically, you want to see these meters bouncing 10 between the “0” and the “+4” LEDs. It is okay if the OL 7 LEDs light occasionally, but if they light frequently or 4 0 continuously, turn down the main level control until the 4 OL LEDs blink occasionally or not at all. 10 20 1. CUE LED This large LED will
Summary of the content on the page No. 19
Owner’s Manual 4. FW LOOP OUT 5. PHONES LEVEL In addition to a mix of channels 1 to 4, the FireWire This controls the volume of the headphones output output to the computer can contain the FireWire input from off to maximum gain. signal, if this switch is down. The mains and phones are Warning: The headphone amplifier is de- not affected by the switch, and always provide a full mix 1 2 3 4 signed to drive any standard headphones to U U of channels 1 to 4 and the 2-channel Fir LEVEL eWire i
Summary of the content on the page No. 20
Appendix A: Service Information • If you are playing a guitar or other instrument level If you think your U.420d has a problem, please check source into channel 1, make sure you are using the out the following troubleshooting tips and do your best 1/4" input, and that the instrument switch [11] is to confirm the problem. Visit the support section of our engaged. website (www.mackie.com/support) where you will find lots of useful information such as FAQs, documentation, • If you are pl
