Mackie PROFX16 35. 48V PHANTOM POWER Switch, 36. POWER LED, 37. STEREO GRAPHIC EQ

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

Stereo Graphic EQ, Main Meters & more!

35. 48V PHANTOM POWER Switch

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.

Press this switch in if your microphone requires phantom power. (Always check the position of this switch before connecting microphones.) A red LED just to the right of the switch will illuminate to indicate that phantom power is active. This is a global switch that affects all mic channels' XLR jacks at once.

Never plug single-ended (unbalanced)

microphones,­ or ribbon mics into the mic input jacks if phantom power is on. Do not

plug instrument outputs into the mic XLR input jacks

with phantom power on, unless­ you know for certain it is safe to do so. Be sure the main mix fader [56] is turned down when connecting microphones to the mic inputs when phantom power is turned on, to prevent pops from getting through to the speakers.

36. POWER LED

This green LED will illuminate when the mixer is turned on, as a reminder of how on it really is. If it is not on, then it is off, and the mixer becomes a rather nice weight for keeping your morning newspaper from blowing away in the wind.

If it does not turn on, make sure the power cord is correctly inserted at both ends, the local AC mains supply is active, and the power switch [2] is on.

37. STEREO GRAPHIC EQ

This 7-band graphic equalizer adjusts the main mix output. It affects the line-level outputs [30, 31], but not the headphones [33], tape outputs [34], or the USB output [3]. This EQ may be used for a monitor mix instead of the main mix if the main mix/mon 1 switch

[38]is engaged. It may also be quickly bypassed using the EQ in/bypass switch [39].

Each slider allows you to adjust the level of its frequency band, with up to 15 dB of boost or cut, and no change in level at the center (0 dB) position. The frequency bands are: 125, 250, 500, 1 k, 2 k, 4 k and 8 kHz.

The EQ section comes before the main mix fader [56] and meters [40]. As with the channel EQ, just take it easy. There is a large amount of adjustment, and if you are not careful, you can upset the delicate balance of nature. Although it may not seem cool to actually turn down controls, with EQ it is often your best option. Turn down the offending frequency range rather than boosting the desired range. You may use it to reduce the level of some frequency bands where feedback occurs.

20ProFX16 and ProFX22