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10

Using Multiple Distributed Line Voltages

The MPC amplifiers allow you to connect distributed lines to any of  the 100V, 70V, and 25V

outputs at the same time. For example, a single channel could drive both a 70V and a 25V

line; such flexibility could save you the expense of an additional amplifier.
The 

total power 

of  all the speakers connected to the 

AUDIO TRANSFORMER

 outputs should

always be less than the power rating of the channel. For example, an MPC300T  is rated for a

maximum power output of 250 watts; therefore, the total of all the speakers’ power taps for

all the lines connected to the 100V, 70V, and 25V outputs must not exceed 250 watts.

MAKE SURE THAT LOCAL BUILDING CODES PERMIT THE USE OF THE

OUTPUT VOLTAGE YOU SELECT.

BRIDGED MONO MODE
CAUTION:

ALL MODELS

—Output

voltages as high as 160
volts rms are available
between the MPC
amplifier’s bridged termi-
nals (200 volts at isolated
outputs).

MPC200T, MPC300T, and
MPC600T

 (140V and 200V

operation)—Fully insulated
CLASS ONE wiring must be
used to connect the ampli-
fier to the loudspeakers.

MODE BRIDGÉ MONO:
ATTENTION

TOUT LES MODÈLES

—Des

tensions de sorties aussi
élevée que 160 volts rms
sont disponible aux bornes
du amplificateur MPC en
mode bridgé mono (200
volts aux sorties isolés).

MPC200T, MPC300T, et
MPC600T

 (opération 140V

et 200V)—On doit utiliser
du câblage entièrement
isolé de CLASSE 1 pour
relier l’amplificateur aux
haut-parleurs.

VORSICHT BEI MONO-
BRÜCKENBETRIEB:

ALLE TYPEN

—Zwischen

den Ausgangsklemmen der
MPC-Verstärker können
Ausgangsspannungen bis
160 Volt RMS anliegen
(200 Volt bei isolierten
Ausgänge).

MPC200T, MPC300T, und
MPC600T

 (140V- und 200V-

Betrieb)—Der Anschluß
muß vom Verstärker bis
zum Lautsprecher mit
vollisoliertem Kabel
erfolgen.

PRECAUCIÓN PARA EL
MODO MONO PUENTE

TODO LOS MODELOS

Voltajes de salida de hasta
160 Vrms existen entre los
terminales de puente del
amplificador MPC (200
voltios a las salidas
aisladas).

MPC200T, MPC300T, y
MPC600T

 (operación 140V

y 200V)—Utilice cableado
de CLASE UNO totalmente
aislado para conectar las
altoparlantes.

Bridged Mono Mode

Bridged Mono mode combines the output power of  both channels to drive a single load.

Channel 2 is fed with an inverted signal from Channel 1. Thus, when one channel “pushes,”

the other “pulls,” providing twice the voltage swing of  a single channel. The speaker connects

between the “+” terminals of each channel.

Содержание MPC

Страница 1: ...21 MPC Series Power Amplifiers Owner s Manual TD 000074 00 TD 000074 00 Rev C...

Страница 2: ...dged Mono Configuration 11 MPC300 300T 600 600T Bridged Mono Configuration 11 Bridged Mono Speaker Connection 11 Low Impedance Bridged Mono 12 High Impedance Bridged Mono 12 Parallel Mono Configuratio...

Страница 3: ...eben gleichm ig auf zwei Personen zu verteilen Cautions Sicherheitsvorschriften CAUTION TO AVOID ELECTRIC SHOCK DO NOT INSERT FINGERS OR OBJECTS INTO ANY OPENINGS IN THE CHASSIS VORSICHT UM ELEKTRISCH...

Страница 4: ...linear complementary output circuitry using multi rail power supplies High Cooling Capacity Every MPC amplifier features a large diameter two speed fan and massive extruded aluminum heat sinks The ou...

Страница 5: ...ot Cover 7 Gain Control 8 Detachable Input Header Block 9 Cooling Fan 10 Shrouded Output Connector Direct Outputs 11 Shrouded Output Connector Audio Transformer Outputs 12 Mounting Holes for Optional...

Страница 6: ...protection circuitry automatically resets to normal when conditions assure safe operation Inputs MPC amplifiers feature balanced inputs connected via a Euro style 7 terminal detachable header Channel...

Страница 7: ...MPEDANCE DIR OUTPUT ISOL OUTPUT AUDIO TRANSFORMER 70V 25V 8 4 2 100V 0 70 100 CH1 CH1 BRIDGE MONO LOW IMPEDANCE DIR OUTPUT ISOL OUTPUT AUDIO TRANSFORMER 70V 25V 100V 0 70 100 CH1 CH1 BRIDGE MONO LOW I...

Страница 8: ...the low impedance output while the 100V or 70V output drives backstage monitors or restaurant loudspeakers Application Example 3 Extending low frequency performance Adding a low impedance subwoofer 4...

Страница 9: ...and grows the channel s low impedance capabilities diminish 1 Computing maximum allowable distributed line loading with a known low impedance load The formula is MaxATP RatedLZP 2 RatedLZP Impedance 2...

Страница 10: ...ng term power capacity If it is lit about half the time the amplifier channel will probably go into thermal protection within a few minutes 2 Computing the minimum low impedance load with a known dist...

Страница 11: ...N TOUT LES MOD LES Des tensions de sorties aussi lev e que 160 volts rms sont disponible aux bornes du amplificateur MPC en mode bridg mono 200 volts aux sorties isol s MPC200T MPC300T et MPC600T op r...

Страница 12: ...gain control to set the level Both channels SIGNAL and CLIP indicators should flash identically when the amplifier is operating Bridged Mono Speaker Connection Low impedance A speaker load of 4 ohms o...

Страница 13: ...1200 Watts 1800 Watts USE High Impedance Bridged Mono Distributed System Bridged Mono Applications Placing the T models in bridged mono mode permits higher drive voltages 140V and 200V for reducing th...

Страница 14: ...located on the rear panel They have 11 detents and are adjustable from 0 dB full gain to full attenuation Displays The LED displays on models MPC200 and 200T are different from those on models MPC300...

Страница 15: ...on the red PROTECT LED on each channel lights for about 2 to 3 seconds during which the output relays mute the speakers After the turn on muting interval the PROTECT LEDs turn off the green POWER LED...

Страница 16: ...e output to ground to help protect the load against damage The amplifier s high pass filter described below will itself block DC coming into the amplifier inputs The amplifier s Output Averag ing prot...

Страница 17: ...ature Stable into reactive or under impedance loads Load Protection Turn on turn off muting DC fault load grounding relay MPC300 300T 600 600T with internal fault fuses Power Requirements 100V 120V 22...

Страница 18: ...standards call for the ability to operate at 1 3 power in order to meet worst case demands The electrical current consumption at 120 VAC for each audio power level and load impedance is shown in the...

Страница 19: ...B r h l a c k 0 0 2 C P M T 0 0 2 C P M 8 8 5 4 6 3 6 1 5 1 6 5 5 1 0 1 5 8 2 1 5 8 2 2 4 4 5 6 2 1 8 1 3 0 6 0 1 7 6 2 0 3 8 0 1 2 5 8 2 2 2 2 0 4 3 2 0 9 5 0 0 7 1 9 2 4 5 9 2 1 6 2 3 5 8 2 2 V 0 0...

Страница 20: ...tightness of the two mounting screws on the input panel except MPC200 200T If they are loose the panel itself might not be well grounded to the chassis In some cases such as when the audio signal cab...

Страница 21: ...zation You may obtain that authorization by contacting the factory or repair facility directly Please ship amplifiers in the original packing materials or equivalent to prevent further damage during s...

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

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