QSC DCA 1644 Uživatelský manuál

1•DCA 1222•DCA 1622•DCA 2422•DCA 3022•DCA 3422•DCA 1824•DCA 1644DCA™ Digital Cinema AmplifiersTD-000075-00Rev. FUser ManualManuel del’utilisateurBedi

10Input filterDescriptionThe low-frequency (LF) filter rolls offsignals below either 30 Hz or 50 Hz.This improves bass performance bylimiting sub-audi

11Parallel input modeDescriptionThe "Parallel Input" switches let youoperate the amplifier in parallelmode, delivering the same signal totwo

12FEATURES & SETUPCARACTERÍSTICASY AJUSTESCARACTÉRISTIQUESET LEUR UTILISATIONAUSSTATTUNG &EINSTELLUNGENBranching to other ampsIn addition to p

13FEATURES & SETUPBridge mono modeDescriptionBridged mono mode combines thepower of two amplifier channels(Channels 1 & 2, and/or 3 & 4) i

14FEATURES & SETUPCARACTERÍSTICASY AJUSTESCARACTÉRISTIQUESET LEUR UTILISATIONAUSSTATTUNG &EINSTELLUNGENBridge mono mode(continued)BRIDGED-MONO

15FEATURES & SETUPWhat are the differencesamong Stereo, ParallelInput, and BridgeMono modes?Stereo modeThis is the "normal" way of using

16FEATURES & SETUPBridge Mono modeThis mode combines the full powercapabilities of both channels into asingle speaker system. The amplifierinterna

173.50"88.9 mm13.0"330.2 mm13.0"330.2 mm14.0"355.6 mm17.30"440 mmPOWEROFF--DCA 30222828INSTALLATIONUtiliser les quatre vis et

18CONNECTIONSCLIP LIMCLIP LIMMODE SWIMODE SWICHCHFILTER OFILTER O30 Hz FIL30 Hz FILBRIDGE OBRIDGE MONO OFF50 HzINPUTSPARALLSTEREO50 Hz1 2 3 4 5 6 7 8

19Terminal block unbal-anced • bloc détachable asymêtrique •unsymetrische Anschlußstecker • Entrada de bloque nobalanceadoInputs (continued)Balanced i

Erklärung derBildsymboleDas Blitzzeichen innerhalb einesgleichseitigen Dreiecks warnt denBenutzer vor nicht isolierter,gefährlicher Spannung im Innere

20Speakon™ Outputs(two-channel models)The two-channel DCA amplifiers offera choice of output connections: twoNeutrik NL4MD Speakon jacks and abarrier

21842*1.6 **ΩΩΩΩ842*1.6 **ΩΩΩΩ***Except DCA 1644DCA 1222 only1684*3.2 **ΩΩΩΩ2Ω2Ω***Except DCA 1644DCA 1222 onlyCONNECTIONS CONEXIONESCONNEXIONS ANSCHL

22CONNECTIONS CONEXIONESCONNEXIONS ANSCHLÜSSEDataPortThe amplifier features a DataPort,which connects to a QSControlMultiSignal Processor, DCM Digital

23OPERATIONAC power switchBefore applying power, check allconnections and turn down the gaincontrols. The "soft start" sequencestarts with t

24Security panelAfter setting the gain controls, youcan install the security panel toprevent tampering and accidentalmisadjustment.Installing the secu

25OPERATIONFan coolingTThe fan varies speed automaticallyto maintain safe internal temperaturesand minimize noise. Keep the frontand rear vents clear

26APPLICATIONS APPLICATIONS ANWENDUNGS-BEISPIELEAPLICACIONESA small passive systemUn petit système passifEin kleines PassivsystemUn sistema pasivo peq

27APPLICATIONSAPPLICATIONS APLICACIONESANWENDUNGS-BEISPIELEA typical 3-way systemUn système 3 voies typiqueEin typisches 3-Wege-SystemUn sistema típic

28APPLICATIONSAPPLICATIONS APLICACIONESANWENDUNGS-BEISPIELEA typical 2-way system with Dolby Digital - Surround EXUn système 2 voies typique avec Dolb

29TROUBLESHOOTINGProblem: no soundIndication: POWER indicatornot lit• Check the AC plug.• Confirm that the AC outlet worksby plugging in another devic

3Safe operating levels ... 25Niveaux d'utilisation sécuritairesBetriebspegelNiveles adecuados de operac

30No sound (continued)TROUBLESHOOTINGSIGNALPOWER-20dB-IOdBCLIP1 C H A N N E L 2SIGNALPOWER-20dB-IOdBCLIP1 C H A N N E L 2Pas de son (suite)Ind

31• This could be caused by a faultyspeaker or loose connection. Checkthe wiring and try another speaker.• The signal source may be clipping.Keep the

32Problem: hiss• Unplug the amplifier input toconfirm that the hiss is comingfrom the source or a deviceupstream; erratic or poppingnoises indicate an

33INNER WORKINGSAn impressive amount of technologyis packed "under the hood" of a DCASeries amplifier. Thousands of wattsof power flow inche

34High Performance Audio. Highspeed power transistors convert thisDC power into the full range audiooutput which drives the speakers.High-current desi

35DCA1222 DCA1622 DCA2422 DCA3022 DCA3422OUTPUT POWER in wattsFTC: 20 Hz–20 kHz @ 0.03% THD,all channels driven8 ohms per channel 200 300 425 550 700F

36DCA1824 DCA1644OUTPUT POWER in wattsFTC: 20 Hz–20 kHz @ 0.03% THD,all channels driven8 ohms per channel 170 250FTC: 20 Hz–20 kHz @ 0.05% THD,all cha

37TECHNISCHE DATENSPECIFICATIONS SPÉCIFICATIONS ESPECIFICACIONESDCA1222 DCA1622 DCA2422 DCA3022 DCA3422LOAD PROTECTION Turn-on/turn-off muting, DC-fau

38TECHNISCHE DATENSPECIFICATIONS SPÉCIFICATIONS ESPECIFICACIONESDCA1824 DCA1644LOAD PROTECTION Turn-on/turn-off muting, DC-fault power supply shutdown

WARRANTY INFORMATION(USA only; see your dealer or distributor)INFORMATIONS DE GARANTIE(É-U seulement; consultez votre marchand oudistributeur)GARANTIE

4EC Declaration of Conformityfor Model PLX, DCA, and CX Professional Power AmplifiersIncluding the models PLX1202, PLX1602, PLX2402, PLX3002, PLX3402,

40QSC Audio Products, Inc. 1675 MacArthur Boulevard Costa Mesa, California 92626 USA“QSC” and the QSC logo are registered with the U.S. Patent

5INTRODUCTIONEINFÜHRUNGINTRODUCCIÓNAVANT-PROPOS© Copyright 1998, 1999, 2005, 2007, QSC Audio Products, Inc.QSC® is a registered trademark of QSC Audio

6Caractéristiques• 5 modèles à deux canaux, et 2modèles à 4 canaux• Sorties sur bornes à vis et prisesSpeakon*• Appel de courant nul à l’allumage,ce q

7Front panel1. Power switch2. Cooling vents3. Gain control (1 per channel)4.CLIP, -10 dB, -20 dB andSIGNAL indicator LEDs, allchannels5.POWER, BRIDGE,

8Rear panel1. Terminal block inputs2. DataPort3. XLR inputs4. Configuration switch5. Configuration switch chart6. TRS inputs7. Speakon output, Channel

9Clip limiterDescriptionWhen the audio signal drives theamp's output circuit beyond its powercapability, it clips, flattening the peaksof the wav