User manual MACKIE U420D

[. . . ] 4-Channel Mic/Line Mixer with FireWire and DJ Features OWNER'S MANUAL 1 MIC +3 LEVEL SET 2 MIC +3 3 U +25 +50 LEVEL SET 4 U -14 +14 U GAIN +50 GAIN -22 U +25 -22 U POWER 48V -14 U +14 EQ HIGH 12kHz EQ HIGH -15 U +15 -15 U +15 L OL 10 7 R KILL U +10 KILL U +10 MID -15 600 MID KILL +15 -15 600 +15 4 0 1. 5k U +10 KILL U +10 150 1. 5k MID FREQ 150 4 10 20 KILL LOW +10 KILL 100 U 8k 100 U 8k +10 AUX LOW 80Hz -15 +15 -15 +15 O O AUX CUE U MAX O O LEVEL U MAX 48V O O MAX CUE O O MAX CUE O O MAX CUE O O MAX CUE CURVE O O +10 5 0 -5 -10 -20 O O FW IN MAX O O PHONES MAX SLOW FAST LOOP OUT 3 4 O O MAX U. 420d 4-Channel Mic/Line Mixer ImportantSafetyInstructions 1. Donotblockanyventilationopenings. Installinaccordancewiththe manufacturer'sinstructions. Donotinstallnearanyheatsourcessuchasradiators, heatregisters, stoves, orotherapparatus(includingamplifiers)thatproduceheat. Donotdefeatthesafetypurposeofthepolarizedorgrounding-type plug. Apolarizedplughastwobladeswithonewiderthantheother. [. . . ] The cue light [31] will also come on as a reminder that you are not listening to the main mix in the headphones. 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. 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 headphones, or added to the aux bus. ) After the fader, the mono channels are split and added to the left and right main mix. 1. 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 singers. Owner's Manual 15 U. 420d 4-Channel Mic/Line Mixer 1 MIC +3 LEVEL SET 2 MIC +3 3 U +25 +50 LEVEL SET 4 U -14 +14 U GAIN +50 GAIN -22 U +25 -22 U POWER 48V -14 U +14 EQ HIGH 12kHz EQ HIGH -15 U +15 -15 U +15 L OL 10 7 R KILL U +10 KILL U +10 MID -15 600 MID KILL +15 -15 600 +15 4 0 1. 5k U +10 KILL U +10 150 1. 5k MID FREQ 150 4 10 20 KILL LOW +10 KILL 100 U 8k 100 U 8k +10 AUX LOW 80Hz -15 +15 -15 +15 O O AUX CUE U MAX O O LEVEL U MAX 48V O O MAX CUE O O MAX CUE O O MAX CUE O O MAX CUE CURVE O O +10 5 0 -5 -10 -20 O O FW IN MAX O O PHONES MAX SLOW FAST LOOP OUT 3 4 O O MAX Channel3and4controls Channel 2 and 3 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 channels 1 and 2, but there are enough differences in the details to justify an extra page or two. 1. 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. . 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. [. . . ] IMPORTANT: Make sure that the Service Request Number is plainly written on the shipping carton. 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 sales receipt. Final determination of warranty coverage lies solely with LOUD Technologies. [. . . ]