Mackie M1200/M1400 Bedienungsanleitung

M•1200/M•1400OWNER’S MANUAL™OL–3–6–9–20–3–6–9–20SIGOLSIGCH13028262022182416148001.23v (+4dBu)SENSITIVITYGAIN/dBCH2PROTECTCOLD HOTSHORTTEMP STATUSINTER

10M•1200/M•1400: STEREO SYSTEM WITH CD HORNSCHANNEL21CHANNELCH1CH2SPEAKER OUTPUTS+––+63Hz125HzCONSTANT DIRECTIVITYHORN EQ /AIR EQCONSTANT DIRECTIVITY

11FEATURE DESCRIPTIONS GAINThese giant knobs control the levels to theoutput section of the M•1200/M•1400 amplifi-ers. You’ll notice that their travel

12tion or sound check, then leave them alone,using your signal source (usually a mixer) tocontrol listening levels as you work. Or play.You may wonder

13The M•1200/M•1400amps draw their ventila-tion air in from the frontand out through the sidepanels. The amp needsplenty of fresh air to stay cool. DO

14CH1CH2SPEAKER OUTPUTS+––+SERIAL NUMBERMANUFACTURING DATERISK OF ELECTRIC SHOCKDO NOT OPENREPLACE WITH THE SAME TYPE FUSE AND RATING.DISCONNECT SUPPL

15soothing green light adjacent to it glows. Toturn the amp off, push the lower half. It’ll clickagain and the green light will extinguish.When you po

16In fact, you can use both the 1/4" jacks andthe binding posts simultaneously. Just remem-ber that doing so creates two parallel loads.Please se

17When connecting a balanced signal usingthe XLR or 1/4" jacks, they’re wired thusly, perAES (Audio Engineering Society) standards:XLR TRSHot (+)

18 THRUSomeday you’ll do a show at Carnegie Halland realize that one M•1200 or M•1400 ampli-fier is just not going to do the job — you’ll needa six-fo

19 CD FrequencyYour compression drivers’ spec sheet shouldhave a suggested frequency for compensationboost. If so, just turn the CONSTANT DIREC-TIVITY

CAUTION AVISRISK OF ELECTRIC SHOCK DO NOT OPENRISQUE DE CHOC ELECTRIQUENE PAS OUVRIRCAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCKDO NOT REMOVE COVE

20The AMP MODE switch determines the in-put signal routing within the M•1200/M•1400amplifier. Shipped from the factory, the switchis set to STEREO. Th

21“square off,” and the average power going intothe speaker is roughly double that of a sinewave. Square waves sound awful, and couldpossibly damage y

223. Set the LOW CUT FILTER frequencycontrol to either 63Hz or 125Hz, dependingon the cutoff frequency selected in thesubwoofer amplifier .Since the

23GENERAL PRECAUTIONS AND CONSIDERATIONS AC POWER CONSIDERATIONSBe sure the M•1200/M•1400 is plugged intoan outlet that is able to supply 120VAC at hi

24The extension cord used to supply power tothe “amp rack” should have a third wire safetyground to avoid presenting a safety hazard. Wealso recommend

25The thickness of wire is rated in gauges.Use the chart below to determine the correctgauge of wire to use according to the distancebetween the speak

26APPENDIX A: Service Info• If the OUTPUT APPLICATION switch isset to SUBWOOFER , make sure theLOW CUT FILTER frequency control isset to OFF or near

27As soon as the music gets loud, the ampshuts down!• Check the M•1200/M•1400’s meters .Be sure that OL is not lighting upfrequently or continuously.

28APPENDIX B: GlossaryclippingA cause of severe audio distortion that is theresult of excessive gain requiring the peaks ofthe audio signal to rise ab

29referenced to 1 VRMS across any impedance.Commonly used to describe signal levels inconsumer equipment. To convert dBV to dBu,add 2.2 dB.decibel (dB

3Part No. 820-062-00 Rev. A 12/96©1996 Mackie Designs, All Rights Reserved. Printed in the U.S.A.Lend Me Your EarsExposure to extremely highnoise lev

30(also called a high-pass filter) reduces oreliminates frequencies below its cutoff fre-quency. There are also high-cut (low-pass)filters, bandpass f

31Maintaining proper circuit impedance rela-tionships is important to avoid distortion andminimize added noise. Mackie input and out-put impedances ar

32QA way of stating the bandwidth of a filteror equalizer section. An EQ with a Q of .75 isbroad and smooth, while a Q of 10 gives a nar-row, pointed

33APPENDIX C: Connectors• Balanced mono circuits. When wired as abalanced connector, a 1⁄4" TRS jack or plug isconnected tip to signal high (hot)

34other. The unbalanced ground (earth) connec-tion should be wired to the low and the groundconnections of the balanced input. If there areground-loop

35APPENDIX D: Arcane Mysteries Illuminatedsleeving on the drain wire (the one thatconnects to pin 1) to prevent it fromcontacting the connector shell.

36of RF interference and plan for thembefore you begin construction. Know thefrequency, transmitter power, etc. You canget this information by calling

37The best way to accomplish this goal is tooptimize the input and output levels for eachcomponent in the system. It is best to start atthe beginning

38Biamplified and triamplified systems useseparate power amplifiers to power each indi-vidual low-frequency and high-frequencydriver. An electronic cr

39APPENDIX E: Technical Info“Parallel” means that the positive amp out-put connects to the positive terminals of all thespeakers, and the negative am

4READ THIS PAGE!6. Determine which AMP MODE is bestfor your application:• STEREO mode (separate left and rightinputs, separate left and right output

40SPECIFICATIONSContinuous Average Output Power, bothchannels driven:M•1200225 watts per channel into 8 ohms from 20Hz to 20kHz,with no more than 0.02

41OL–3–6–9–20–3–6–9–20SIGOLSIGCH13028262022182416148001.23v (+4dBu)SENSITIVITYGAIN/dBCH2PROTECTCOLD HOTSHORTTEMP STATUSINTERNAL STATUSCH1CH2CH 1&

42CH 1BALANCEDLINE INPUT(TRS)CH 1BALANCEDLINE INPUT(XLR-F)LIMITERLIMITERONOFFLOW CUTFILTERLOW PASSFILTER(SUBWOOFER)+–80 VDC+–90 VDCTOROIDAL POWERTRANS

43COLOPHONManual written by Jeff Gilbert and DaveFranzwa, with tidbits borrowed from almosteverywhere, including huge chunks of techni-cally baffling

5• The 1/4" TRS inputs are wiredtip = hot (+), ring = cold (–) andsleeve = shield (ground), and can accepteither balanced (TRS) or unbalanced (T

6HOW TO USE THIS MANUALTHE GLOSSARY: A HAVEN OF NON-TECHINESS FOR THE NEOPHYTEJust in case you’re new to the audio world,we’ve included a fairly compr

7CONTENTS QUICK START ...4 APPLICATION DIAGRAMS... 8FEATU

8 APPLICATION DIAGRAMSCHANNEL21CHANNELCH1CH2SPEAKER OUTPUTS+––+63Hz125HzCONSTANT DIRECTIVITYHORN EQ /AIR EQCONSTANT DIRECTIVITYHORN EQ /AIR EQINPUTTHR

9M•1400: MAIN SPEAKERS AND STAGE MONITORS WITH ONE AMPLIFIERCHANNEL21CHANNELCH1CH2SPEAKER OUTPUTS+––+63Hz125HzCONSTANT DIRECTIVITYHORN EQ /AIR EQCONS