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Mackie M1200/M1400 owner manual Hot +, Cold, Ring, Shield Ground, Balanced XLR Connectors

Models: M1200/M1400

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Hot (+)

When connecting a balanced signal using the XLR or 1/4" jacks, they’re wired thusly, per AES (Audio Engineering Society) standards:

	XLR	TRS
Hot (+)	Pin 2	Tip
Cold (–)	Pin 3	Ring
Shield (Ground)	Pin 1	Shield
	SHIELD	2
	HOT
	COLD	3	1
	SHIELD	1
	COLD 3	2
	HOT
	1		SHIELD
	3		COLD
	2		HOT
			HOT
Balanced XLR Connectors
	RING SLEEVE SLEEVE	RING	TIP

TIP

RING (COLD)

TIP (HOT)

SLEEVE (SHIELD)

Balanced 1⁄4" TRS Plugs

Unbalanced TS (tip-sleeve) lines can be ac- commodated via the TRS jack. Make sure the cord terminates with a TS plug (like a guitar plug), or if it’s a TRS plug (like a headphone plug), make sure the ring is tied to the shield, preferably at the source.

SLEEVE

SLEEVE

TIP

TIP

RING (COLD)

TIP (HOT)

SLEEVE (SHIELD)

Unbalanced 1/4" TS plug

You can connect an unbalanced XLR cable to the M•1200/M•1400, although this would be unusual — as unusual as an unbalanced XLR output. However, if you have an unbalanced XLR connection to make, refer to the “Connec- tors” section (Appendix C) at the back of this manual for more information.

The M•1200/M•1400 amps expect to see a nominal signal level anywhere between the –10dBV “semipro” and +4 dBu “pro” standards, meaning almost any line-level mixer or other device can be plugged into the amp’s INPUTs. Use the GAIN controls to adjust the gain of the amplifier to match the signal level you’re using.

If you set the AMP MODE switch in MONO or BRIDGE, use the CHAN- NEL 1 inputs only — the CHANNEL 2 inputs are disabled in this case.

1CHANNEL / BRIDGE / MONO

LOW CUT	INPUT
FILTER
TYPICAL	BALANCED
TYPICAL	OR
35 Hz	UNBALANCED
	STAGE
	MONITOR

AMP MODE

STEREO			MONO		BRIDGE
TYPICAL

INPUT

BALANCED

OR

UNBALANCED

CHANNEL 2

LOW CUT

FILTER

TYPICAL

35 Hz

STAGE

MONITOR

100 Hz

OUTPUT APPLICATION

100 Hz

OFF	170 Hz		FULL		SUB		OFF	170 Hz
			RANGE		WOOFER
	CONSTANT DIRECTIVITY		LIMITER (CH1 & CH2)		FREQUENCY		CONSTANT DIRECTIVITY
	HORN EQ/AIR EQ				FREQUENCY		HORN EQ/AIR EQ
	HORN EQ/AIR EQ		STEREO				HORN EQ/AIR EQ
4.5 kHz			STEREO		125Hz		4.5k Hz
4.5 kHz		ON	TYPICAL			ON	4.5k Hz
		ON	TYPICAL			ON
2k Hz	5.6k Hz		ON	OFF	63Hz		2k Hz	5.6k Hz
	AIR EQ	OFF				OFF		AIR EQ
		TYPICAL				TYPICAL
			THRU			THRU

17

Image 17

Mackie M1200/M1400 owner manual Hot +, Cold, Ring, Shield Ground, Balanced XLR Connectors, Balanced 1⁄4 TRS Plugs

Contents

Page PORTABLE CART WARNING SAFETY INSTRUCTIONSCAUTION AVIS Lend Me Your Ears INTRODUCTIONCONNECTIONS AND SETTINGS INSTALLATIONREAD THIS PAGE QUICK START12.Plug the amp’s power cord into a •The 1/4 TS connectors are wiredtip = hot + and sleeve = cold Things You Must RememberAPPLICATION DIAGRAMS HOW TO USE THIS MANUALA PLUG FOR THE CONNECTORS SECTION GENERAL PRECAUTIONS AND CONSIDERATIONSPOWER CONTENTSGAIN INPUTAPPLICATION DIAGRAMSFROM MIXING CONSOLE MAIN OUT L/R TWO M•1200S: MAINSEE NOTE BELOW M•1400: EIGHT MONITOR SPEAKERSTYPICAL 35Hz STEREO/TYPICALCONSTANT DIRECTIVITY HORNS M 1200/M 1400 STEREO SYSTEM WITH CD HORNSFROM ACTIVE CROSSOVER: HIGH-FREQUENCYL/R FROM ACTIVE CROSSOVER: LOW-FREQUENCYL/RGAIN FEATURE DESCRIPTIONSYou can set the GAIN con trols as low as you like However, reducing the GAIN controls requires ancontrol to control both sides METERSYou may wonder why we didn’t use just one stereo SHORT PROTECTThe M 1200/M 1400 amps draw their ventila tion air in from the frontTEMP STATUS POWERWhat’s that? Why doesn’t the Be Aware: If the HOT LEDSPEAKER OUTPUTS POWER CORDfiers first. When powering If you shut down your system, turn off your amplian amp’s signal routing INPUTchoose to terminate your speaker cables with the Before making connectionsHot + Balanced XLR ConnectorsCold – RingLOW CUT FILTER THRUCONSTANT DIRECTIVITY since it’s wired in parallelMore on Constant Directivity Horns CD FrequencyAMP MODE OUTPUT APPLICATION BRIDGELIMITER 1.Turn off the power to the M•1200/M•1400Here’s how to configure it SUBWOOFER1.Turn the M•1200/M•1400’s POWER off You’ll probably want to try this switch both waysPage RACK MOUNTING AC POWER CONSIDERATIONSTHERMAL CONSIDERATIONS GENERAL PRECAUTIONS AND CONSIDERATIONSOUTPUT WIRING INPUT WIRING25 feet 50 feetWire Length 70V DISTRIBUTION SYSTEMSUp to 25 ft Up to 40 ftWARRANTY SERVICE APPENDIX A Service InfoTROUBLESHOOTING No powerBad sound REPAIRNoise/Hum • You have a broken fingerAPPENDIX B: Glossary decibel dB frequency knee shelving “XLR” CONNECTORS APPENDIX C: Connectors1⁄4 TS PHONE PLUGS AND JACKS UNBALANCING A LINEBINDING POSTS SPEAKONSFigure D: Binding Posts with Bare Wire Figure G: Speakon ConnectorsMaximum wire run for 0.5dB power loss in feet APPENDIX D: Arcane Mysteries IlluminatedBalanced Lines A balanced line is a threeHere are some guidelines GroundingOptimizing Sound System Levels 11.Don’t use hardware-storelight dimmersDynamic Range Next set the master output level faderBiamplified System with Active Crossover Passive Crossover SystemDO THE MATH: OHMS, LOADS AND SUCH APPENDIX E: Technical InfoSPECIFICATIONS Power Consumption IndicatorsAC Line Power Limiter SectionM•1200/M•1400 FREQMackie, The Running Man, and FR Series COLOPHON1996 Mackie Designs Inc All Rights Reserved Printed in the U.S.A