Mackie ProFX22 Owner's Manual - Page 11

ProFX Features Front Panel - Connections and Channel Strip The vertical channel strips look very similar, and have only a few differences between them. Each channel works independently, and just controls the signals plugged into the inputs directly above them. 5. MIC INPUTS This is a female XLR connector that accepts a balanced mic or line level input from almost any type of source. The mic preamps feature our XDR2 design, with higher fidelity and headroom rivaling any standalone mic preamp on the market today. The XLR inputs are wired as follows: Pin 1 = Shield or ground Pin 2 = Positive (+ or hot) Pin 3 = Negative (- or cold) We use phantom-powered, balanced ­inputs just like the big mega-consoles, for e­ xactly the same reason: This kind of circuit is­­excellent at rejecting hum and noise. Professional ribbon, dynamic, and condenser mics all sound excellent through these inputs. The mic/line inputs will handle any kind of level you can toss at them, without overloading. Microphone-level signals are passed through the mixer's splendid microphone preamplifiers to become line-level signals. See Appendix B (page 26) for further details and some rather lovely drawings of the connectors you can use with your mixer. PHANTOM POWER Most modern professional condenser mics require 48V phantom power, which lets the mixer send low-current DC voltage to the mic's electronics through the same wires that carry audio. (Semi-pro condenser mics often have batteries to accomplish the same thing.) "Phantom" owes its name to an ability to be "unseen" by dynamic mics (Shure SM57/SM58, for instance), which don't need ­external power and aren't affected by it anyway. BAL /UNBAL 1 5 FOOTSWITCH BAL /UNBAL BAL /UNBAL MIC XX BAL /UNBAL 6 LINE IN 8 INSERT MIC MIC XX BAL /UNBAL XX / XX BAL /UNBAL 2 MON SEND XX / XX BAL /UNBAL FX SEND XX / XX BAL /UNBAL LINE IN 25 OFF MAX COMP L (MONO) 7LINE IN XX L (MONO) LINE IN XX L (MONO) LINE IN XX R R R LINE IN XX LINE IN XX LINE IN XX U MIC GAIN 9 U -20dB +50 +30dB GAIN 10 LOW CUT 100Hz U MIC GAIN U +50 -20dB +30dB GAIN LOW CUT 100Hz MIC GAIN U +50 GAIN LOW CUT 100Hz U EQ U EQ U EQ 11 HI 12kHz HI 12kHz -15 +15 U -15 +15 U -15 +15 12 MID MID U -15 +15 600 -15 +15 600 14 13150 1.5k 150 FREQ 1.5k FREQ -15 +15 100 8k 100 8k U U U 15 LOW 80Hz LOW 80Hz HI 12kHz MID 2.5kHz LOW 80Hz -15 +15 -15 +15 -15 +15 U AUX U AUX U AUX MON 1 16 +15 U +15 U MON 1 +15 U MON 1 U -20 +20 GAIN U EQ -15 +15 HI 12kHz U -15 +15 MID 2.5kHz U LOW 80Hz -15 +15 U AUX +15 U MON 1 U -20 +20 GAIN LINE USB SOURCE 24 U EQ -15 +15 HI 12kHz U -15 +15 MID 2.5kHz U LOW 80Hz -15 +15 U AUX +15 U MON 1 OO OO OO OO OO OO OO OO OO OO OO OO OO OO OO 17 +15 U MON 2 FX +15 +15 U MON 2 FX +15 PAN 18 LR PAN LR 19 20 OL OL MUTE MUTE +15 U MON 2 FX +15 PAN LR OL MUTE +15 U MON 2 FX +15 PAN LR OL MUTE +15 U MON 2 FX +15 PAN LR OL MUTE dB 10 5 23U 5 10 20 30 40 50 60 OO XX dB 10 25 1 1-2 U 25 1 3-4 10 2120 L-R 30 PFL SOLO 40 2250 60 OO OO OO XX XX / XX XX / XX XX / XX dB dB dB 10 10 10 5 5 5 1-2 1-2 1-2 1-2 U U U 5 5 5 3-4 3-4 3-4 3-4 10 10 10 20 L-R 30 PFL SOLO 40 50 60 20 L-R 30 PFL SOLO 40 50 60 20 L-R 30 PFL SOLO 40 50 60 L-R PFL SOLO OO Mono Channels Stereo Channels Channels 1-8 on ProFX16 Channels 9-16 on ProFX16 Channels 1-14 on ProFX22 Channels 15-22 on ProFX22 Owner's Manual 11