Mackie PROFX16 38. MAIN MIX / MON 1 Switch, 39. EQ IN / BYPASS Switch, 40. MAIN METERS, 41. RUDE SOLO LED

4											PHANTOM				POWER
		PROFESSIONAL MIC/LINE MIXER WITH FX								35 48V				36
			STEREO GRAPHIC EQ											MAIN
	15										15		METERS
					37									40
	10									10
													0dB = dBu
															OL
	5										5				15
															10
	0										0
															6
	5										5
															3
	10										10				0
															2
	15										15
															4
	125	250		500		1K	2K		4K	8K					7
															10
	38									39
													30
				MAIN MIX				EQ IN							20
				MON 1				BYPASS
													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.

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).

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.

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