Mackie M800 Uživatelský manuál

M•800OWNER’S MANUALHIGH-CURRENT POWER AMPLIFIER™ONOFFPOWER PROFESSIONAL POWER AMPLIFIERFULL SYMMETRY DUAL DIFFERENTIAL HIGH CURRENT DESIGNOL–3–6–9–2

10Here are some more examples of how youmight use the GAIN controls:• When you are in a small room where loudvolume is not required, having the amp ga

11 METERSThe meters indicate the output level indecibels referenced to the clipping point of theamplifier.The top LED is labeledOL (short for Overload

12 POWER CORDThe M•800 is supplied with a detachablepower cord. Make sure the power switch is offbefore firmly attaching the cord to the ampli-fier. F

13If you’re using low imped-ance loads at high powerlevels, we recommend thatyou use the binding postspeaker outputs ratherthan the 1/4" TS jacks

14In order to match the output bandwidth withyour particular speaker system, the M•800 am-plifier has a tunable LOW CUT FILTER. Thefrequencies are cle

15 CONSTANT DIRECTIVITY SWITCHIf you don’t have constant directivity horns,you can leave this switch OFF.Compression drivers mounted on constant-direc

16 AMP MODEThis three-way switch determines what kindof amplifier you want the M•800 to be (or notto be — what was the question?)The switch alters the

17 LIMITERLIMITER ON (TYPICAL). This is the normalconfiguration with protective limiting.LIMITER OFF is without protective limiting.The limiter is not

18GENERAL PRECAUTIONSWARNING: Bypassing theplug’s ground pin can be dan-gerous. NEVER do it!The AC current demand of an amplifier var-ies depending on

19AC Power DistributionThe majority of AC outletsencountered in homes andclubs are served by a 240VACcenter-tapped service en-trance transformer. This

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

20• Turn the POWER off, check the speakerconnections and make sure that there areno strands of wire shorting across thespeaker terminals.• Is the HOT

21As soon as the music gets loud, the ampshuts down!• Check the M•800’s meters. Be sure that OLis not lighting up frequently or continuously.• Can the

22APPENDIX B: Technical InformationFor example, four 8-ohm speakers, con-nected in parallel, will equal a 2 ohm load(8 / 4 = 2).If the parallel loads

23M•800 SPECIFICATIONSMaximum Power:175 watts per channel into 8 ohms275 watts per channel into 4 ohms400 watts per channel into 2 ohms550 watts into

2419.00" (48.3cm) 17.25" (43.8cm) 15.25" (38.7cm) 3.50"(8.9cm)2U16.25" (41.3cm) M•800WEIGHT28 lbs.12.7 kg)Limiter Section:Com

25M•800 BLOCK DIAGRAMCH 1BALANCEDLINE INPUT(TRS)CH 1BALANCEDLINE INPUT(XLR-F)LIMITERLIMITERONOFFONOFFLIMITERSWITCHLIMITERDETECTIONLIMITERDETECTIONONOF

26APPENDIX C: Bi-amping and Tri-ampingCH 1OUTCH 2OUTCH 1INCH 2IN+–+–FR SERIESPOWER AMPLIFIER(STEREO MODE)HIGH FREQUENCIES TO TWEETERLOW FREQUENCIES TO

27A. Mackie warrants all materials, workmanship andproper operation of this FR Series product for aperiod of three years from the original date ofpurc

3Part No. 820-079-00 Rev. B 3/2000©2000 Mackie Designs Inc., All Rights Reserved. Printed in the U.S.A.INTRODUCTIONamplifier to handle is clipping. C

4QUICK START6. Determine which AMP MODE is bestfor your application:• STEREO mode (separate left and rightinputs, separate left and right outputs) i

59. In STEREO and MONO, connect speakercables to the SPEAKER OUTPUTS ,either binding post or 1/4" TS:• The binding posts are wired red = pos

6APPLICATION DIAGRAMSMackie’s gang of oppressed illustrator droidshave created easy-to-understand diagrams ofpopular studio and live-sound setups.FEAT

7M•800: MONO OPERATIONCH11CHANNELCH2SPEAKER OUTPUTS+––+MONOBRIDGEBAL/UNBALMONOBRIDGEOFF ON OFF ON OFF ON120 VAC 60 Hz 1500 WATTSCONSTANT DIRECTIVITYH

8M•800: STEREO SYSTEM WITH CD HORNSM•800: STEREO SYSTEM USING TWO AMPLIFIERS IN BRIDGED MODECH11CHANNELCH2SPEAKER OUTPUTS+––+MONOBRIDGEBAL/UNBALMONO

9APPLICATION DIAGRAMSM•800 IN BRIDGE MODE WITH A BASS GUITAR PREAMPLIFIERCH11CHANNELCH2SPEAKER OUTPUTS+––+MONOBRIDGEBAL/UNBALMONOBRIDGEOFF ON OFF ON O