Peavey X-Four owner manual Features, Phantom power-+48V, Pad, Line, Polarity reverse-ø

Page 7

mono input module 1

features

phantom power—+48V

48 volts DC is applied to pins 2 and 3 on the mic-input XLR con- nector. This option is used with condenser microphones and active direct boxes that require an external DC voltage (phantom power) in order to operate.

The 48V switch should not be engaged when using standard (dynamic) microphones, or other sources that do not use phantom power.

a

pad

The mic-input signal is attenuated by 15dB to prevent some signals (e.g. kick drum or lead vocal) from overloading the preamp stage.The pad is used to bring a hot mic-input signal down to a controllable level. The 15dB pad is not functional when the LINE switch is depressed.

If the channel peak	+
LED is illuminated,	+
first try lowering
the input gain control.

Only when this method is unsuccessful should the pad switch be engaged.

line

The input preamp circuit is set up to accept a mic-level signal. This signal is brought in via the XLR mic-input connector located on the rear panel.The 1/4" TRS input jack is disabled.

The input preamp circuit is set up to accept a line-level signal from either the XLR mic-input connector or the 1/4"TRS input jack,both locat- ed on the rear panel.

When a plug is inserted into the 1/4" TRS input jack, the XLR mic-input connector is disabled.

polarity reverse—ø

This feature is used for correcting or minimizing polarity and phase relat- ed errors. For example, occasionally a balanced input connection is reverse-wired before it gets to the mixing console. This can happen in microphones, or in snake line interfaces. By using the polarity reverse fea- ture, this type of error can be corrected.

polarity inverted

polarity not inverted

If the 48V phantom	+
power switch is

engaged, depressing this switch disconnects phantom power from the mic input XLR.

When similar signals	+
from different chan-

nels are combined, phase cancellations can occur.

Reversing the polarity of an input signal often corrects such phasing errors.

p. 7

Image 7

Contents Four mixing console Manual Table of contents Page Conventions Module Block diagram Panel Line FeaturesPhantom power-+48V PadMono input module High-pass filter-HPF GainModule EQ features 1mono input module Aux stereo 5/6 Aux send featuresAux sends Aux 1-4, 5/6 pre-fader-PREPanel Mute Bus assignment featuresLeft-center-right-LCR Pan controlMono input module Mono input module Mono input module Signal present indicator-SIG Level meter featuresPeak indicator-PK Signal level LED’sMono input module Pre-fader listen-PFL Mono assignment-MLeft / right assignment-L-R Group 1-4 assignment1mono input module Rear panel features Stereo input module Line select-Line Left and right mono-switchesStereo input module Input gain-GAIN Stereo input module Equalizer-EQ on Four-band stereo EQ featuresPanel Stereo balance 5 and 6-STEREO Aux send 1-6 controls2stereo input module Balance control 2stereo input module Left/right assignment-L/R 2stereo input module Balance on-groups-BAL on 2stereo input module Line-input left and right RCA connectors Balanced left and right line-in XLR connectorsLine-input left and right 1/4TRS jacks Group module Mid frequency-MID Output eq featuresGroup module Group equalization -per output channel-EQ to Group Group module Matrix 1-2 levels-M1, M2 Matrix featuresPost-group Panel After-fader listen-AFL Fader reverseReversing aux / group and aux / main Aux 1-6 output levelGroup module Pan Group assignment featuresMono assignment-fromgroup-MONO Left/right assignment-fromgroup-L/RGroup module Signal/peak LED’s Group/aux level featuresFader Panel Group insert return Group outputGroup insert point Group insert sendLamp dim switch and DC in connector Group inputs Auxiliary 1-6 output XLR’sAux insert point Aux insert sendModule Block diagram High frequency-HF Master module Left,right,mono equalization-EQ to LEFT,TO RIGHT,TO Mono Module Post-left, post-right, post-mono Left, right, and mono levels-MATRIX1-2External input levels-MATRIX1-2 Panel Master output levels-MTX1-2 Matrix output featuresMatrix 1-2 talkback-TALK to Master module Sum mono Alternate out featuresPre switch Alternate out levelMaster module Headphone level Monitor output featuresMonitor-out level Solo-offFour Block Diagram Sum left/right-SUM L/R Left master featuresSignal/peak LED-SIG/PEAK Talkback left/right-TALK toPanel Left/center/right-LCR to Master Right master featuresRight master fader Four Block Diagram Main left/ main right-L-R to Mono Mono master featuresSolo on indicator Talkback mono-TALK to MonoPanel Talkback on-TALK on Talkback featuresTalkback level Pink noiseModule Block diagram Left, right and mono output XLR’s Left and right alternate output XLR’sLeft and right monitor output jacks Matrix 1-2 output XLR’sModule Insert points-left, right, and mono DC power-inSpecifications Model 5A power supplyGround linking Power supply usagePower requirements Supply identificationPower supply Redundant power supplies Console and power supply groundingMultiple power supplies in-series D7000011 10 /12 /99