Mackie ProFX22 Owner's Manual - Page 21

4 PHANTOM 35 PROFESSIONAL MIC/LINE MIXER WITH FX 48V POWER 36 15 10 5 0 5 10 15 125 38 STEREO GRAPHIC EQ 37 250 500 1K MAIN MIX MON 1 2K 4K EQ IN BYPASS 15 10 5 0 5 10 15 8K 39 MAIN METERS 40 0dB = 0dBu OL 15 10 6 3 0 2 4 7 10 20 30 L R LEVEL SET 41 RUDE SOLO 38. MAIN MIX / MON 1 Switch This switch allows you to choose if the stereo graphic EQ [37] is used for the stereo left and right main mix or if it is used for monitors. For example, there may be times when the graphic EQ may be used wisely in the monitor mix to reduce feedback in the monitors from nearby microphones. Note that this does not affect the monitors 2 send, only the monitors 1 output. 39. EQ IN / BYPASS Switch This switch allows you to quickly engage or disengage the stereo graphic EQ [37]. This may be used for quick checks of your EQ settings, or to shorten the signal path if you do not need to use the EQ. 40. MAIN METERS These peak meters are made up of two columns of twelve LEDs, with three colors to indicate different ranges of signal level, traffic light style. They range from -30 at the bottom, to 0 in the middle, to +20 (CLIP) at the top. When a channel is soloed, the right meter shows no reading, and the left meter shows the level of that channel's signal level, pre-fader. The left meter's 0 dB LED is labeled "level set" to show where the level should be when adjusting a channel's gain [9] in the solo mode. When 0 dBu (0.775 V) is at the main left and right TRS outputs [30], it shows as 0 dB on the meters. You can get a good mix with peaks flashing anywhere between -20 and +10 dB on the meters. Most amplifiers clip at about +10 dBu, and some recorders aren't so forgiving either. For best real-world results, try to keep your peaks between "0" and "+6." Remember, audio meters are just tools to help assure you that your levels are "in the ballpark." You don't have to stare at them (unless you want to). 41. RUDE SOLO LED This large red LED flashes when one or more solo switches are engaged [22]. This acts as a reminder that what you hear in the control room and headphones is the soloed channel(s). If you forget that you are in solo mode, you can easily be tricked into thinking that something is wrong with your mixer. Hence, the rude solo light. Please forgive its rudeness, it is only trying to help, and wants to be your friend. Owner's Manual 21