Mackie 406M Owner's Manual - Page 19
Efx To Mon, Monitor Master, Main Master, Level Meters, Phantom Power Switch, Rumble, Reduction
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EFX TO MON Use this control to add the EMAC internal effects (or external effects, if connected) to the monitor mix. The effects signal is added to the monitor signal path just prior to the RUMBLE REDUCTION switch and the MONITOR MASTER control. The EFX TO MON control ranges from off through unity (the center detent position) on up to +10 dB of extra gain. signal level at the MONITOR LINE OUT and the MIXER LINE OUT . To attain the best signal-to-noise ratio while still maintaining adequate headroom, set the MONITOR MASTER and MAIN MASTER controls so the 0 dB indicator on the LEVEL meters blinks frequently. It's okay for the +5 dB indicator to blink occasionally, but avoid allowing the CLIP indicator to light. Clipping occurs at a +20 dBu output level. MONITOR MASTER PHANTOM POWER Switch This controls the overall signal level at the MONITOR LINE OUT. The control ranges from off through unity on up to +12 dB of extra gain. Push in this switch to provide phantom power to the XLR MIC input connectors. All of the XLR mic inputs are capable of providing phantom power. Phantom power is required Turning up the MONITOR MASTER too much can cause feedback. To reduce the possibility of feedback, try to position the microphones so they are pointing away from the stage monitors. This will minimize the amount of monitor signal that is picked up by the microphones. to operate most condenser microphones (some condenser microphones are batterypowered). The PPM Series provide +15V DC phantom powering on pins 2 and 3 of the XLR connectors. If you are using condenser microphones, or any mic that requires phantom power, engage the PHANTOM POWER switch (located just below the EMAC section). If you have dynamic, ribbon, or tube mics that do not require phan- EFX TO MAIN tom power, leave the PHANTOM POWER Use this control to add the EMAC internal effects (or external effects, if connected) to switch out. If you are using both condenser and dynamic mics, don't worry. Phantom power will the main mix. The effects signal is added to the main signal path just after the POWER MASTER OUTPUT SECTION RUMBLE REDUCTION switch and just prior to the MAIN MASTER control. The EFX TO MAIN control ranges from off through unity (the center detent position) on up to +10 dB of extra gain. 63 125 250 500 1K 2K 4K 8K 16K +15 15+ 10 10 5 5 0 0 5 5 10 10 U +10 EFX TO MON U -15 MAIN MASTER 15- +12dB LEVEL CLIP 5 0 5 10 15 20 30 OO OO OO OO This controls the overall signal level at the MIXER LINE OUT(s) and at the input to the power amplifiers. The control ranges from off through unity on up to +12 dB of extra gain. LEVEL Meters These 8-segment LED meters indicate the 75Hz RUMBLE REDUCTION MONITOR EQUALIZER MONITOR MASTER 63 125 250 500 1K 2K 4K 8K 16K +15 15+ 10 10 5 5 0 0 5 5 10 10 -15 15- U +10 EFX TO MAIN U +12dB LEVEL CLIP 5 0 5 10 15 20 30 PHANTOM POWER CH 1-8 BREAK (MUTES CH 1-6) MAIN-STEREO/MONO EQUALIZER 75Hz RUMBLE REDUCTION MAIN LR MASTER Stereo Version Master Output Section 19