Jbl MPC Manuel d'utilisateur

21MPC Series Power AmplifiersOwner’s ManualTD-000074-00TD-000074-00Rev. C

9The tables below are general guidelines on which combinations are acceptable.MPC200TSum of Speaker Taps Connected to AUDIO TRANSFORMER Outputs0 W 22

10Using Multiple Distributed Line VoltagesThe MPC amplifiers allow you to connect distributed lines to any of the 100V, 70V, and 25Voutputs at the sam

11Bridged Mono Input ConnectionThe following diagrams show input and outputconnections for bridged mono mode. Note that the MPC200 and 200T models us

12Low Impedance Bridged MonoApplicationsThe bridged mono mode produces higher output voltages with the trade-offof requiring a higher impedance load

13ControlsThe channel attenuator controls, labeled in dB of attenuation, are located on the rear panel.They have 11 detents and are adjustable from 0

14AC PowerThe MPC amplifiers are available for 120 or 220240 VAC, 50 or 60 Hz operation. Eachamplifier is factory configured for the line voltage of

15Short-Circuit ProtectionMPC amplifiers use the proven Output Averaging short circuitprotection system. The circuit permits full output current eve

16SpecificationsDirect Output Models Audio Transformer AND Direct OutputsElectronics MPC200 MPC300 MPC600 MPC200T MPC300T MPC600TDirect Power Out4Ω br

17Power ConsumptionSome background on AC ratings is necessary to fully understand power consumptionspecifications. Essentially, there are three rating

18Heat EmissionAny power that enters the amplifier through the power cord and does not exit through thespeaker outputs turns into heat, which the ampl

1Table of ContentsTable of Contents ...

19TroubleshootingPROBLEM: Channel will not come out of muting. Reduce the gain to ∞ attenuation. If this releases the muting, raise the gain back up

20For Further AssistanceWITHIN THE UNITED STATES:General Information or Technical AssistanceFor more information on JBL products, including these powe

22JBL Professional 8500 Balboa Boulevard, P.O. Box 2200 Northridge, California 91329 U.S.A.A Harman International Company MPC MANUAL 6/98

2Rack Mounting PrecautionsTo avoid damage to the amplifier mounting ears and/orrack rails, the amplifier must be supported at all four cornerswhen use

3DescriptionThe MPC Series from JBL is a line of professional power amplifiers specifically designed forcontracting applications. There are six models

4122512 12334 4512 2412 12CH1CH2CH1CH2BRIDGEMONOBRIDGEMONOLOW IMPEDANCELOW IMPEDANCEDIR. OUTPUTDIR. OUTPUTISOL.OUTPUTISOL.OUTPUTAUDIO TRANSFORMER

5b) DepthThe amplifiers require a rack depth of 45.7 cm (18 in) to clear the rear supportears. The rear panel is 42.9 cm (16.9 in) behind the plane o

6OutputsCovered barrier strips located on the rear panel allow safe, shockproof speaker cable connec-tions to the amplifier outputs. See the diagrams

7Driving Distributed LinesMake sure the sum of the power settings of all the speakers does not exceed the power rating ofthe amplifier. Be aware that

8Loading an amp channelBe careful not to overload the channel when combining low-impedance and distributed loads on the same amplifier channel, becau