JBL MPC, Руководство пользователя

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Description
The MPC Series from JBL is a line of professional power amplifiers specifically designed for
contracting applications. There are six models, each with two independent channels. Each
model in the MPC Series line is available in a “T” version for driving either 200V, 140V, 100V,
70V, 50V, or 25V “constant voltage” lines and in a “non-T” versions for driving loudspeaker
systems with impedances as low as 2 ohms. (See section on bridging for information about
200V, 140V, and 50V drive capabilities).
Power Capabilities— The table below lists the power ratings under various load conditions:
l e d o M 4
Ω Ω
Ω
Ω Ω
1 2
Ω Ω
Ω
Ω Ω
2 s t l o V 0 0 1 s t l o V 0 7 s t l o V 5 2
0 0 2 C P M 2 × W 5 2 2 2 × W 0 5 3
T 0 0 2 C P M 2 × W 5 2 2 2 × W 0 5 3 2 × W 5 7 1 3 2 × W 5 7 1 3 2 × W 0 5 1 3
0 0 3 C P M 2 × W 0 0 3 2 × W 0 5 4
T 0 0 3 C P M 2 × W 0 0 3 2 × W 0 5 4 2 × W 0 5 2 4 2 × W 0 5 2 4 2 × W 0 0 2 4
0 0 6 C P M 2 × W 0 0 6 2 × W 0 0 9
T 0 0 6 C P M
2 × W 0 0 6 2 × W 0 0 9 2 × W 0 0 5
4
2 × W 0 0 5
4
2 × W 0 0 4
4
1
FTC watts per channel, 20 Hz–20 kHz, 0.1% THD
2 EIA watts per channel, 1 kHz, 1% THD
3
Watts per channel, band limited for 50 Hz–15 kHz response, 0.25% THD
4
Watts per channel, band limited for 45 Hz–15 kHz response, 0.25% THD
Channel Separation— Each channel has its own power transformer secondary to provide
maximum audio separation (minimum sound leakage) between the two channels, minimizing
interaction that can otherwise occur on amplifiers with a common power supply.
High Efficiency— The MPC200, 200T, 300 & 300T utilize complementary Class AB linear
output circuitry. For improved efficiency, the MPC600 and 600T utilize Class H step-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 output devices couple directly to the heat sink.
This provides better cooling of the output devices while eliminating problematic insulating
wafers that are an integral part of most other amplifier designs. Forced air cooling in a back-
to-front direction provides for more effective cooling, preventing problems that otherwise
occur from a continual heat build-up inside the equipment rack, which occurs in amplifiers
with front-to-back or side-to-side flow schemes. These design factors allow the MPC amplifi-
ers to work in high duty-cycle instances when many other professional amplifiers cannot.
Weight Balance— The power transformers, as well as the output transformers on the T
models, are mounted in the front of the amplifier chassis, as close to the front mounting rails
as possible. This keeps the unit’s center of gravity forward to minimize the twisting force on
the front mounting ears.
Rail Support— The amplifier should be supported at all four corners, especially if it is in a
portable rack. The flow-through cooling scheme allows you to rack-mount the amplifiers on
top of the other, with no clearance necessary in between. This mounting technique also helps
support the weight of the upper amplifiers. In permanent fixed installations, the rear of the
amplifiers can receive physical support by installing the amplifiers at the bottom of the
equipment rack. Make sure that the direct weight of the back of the amplifier is supported
from the bottom of the rack.
Dimensions—
a) Height—The MPC200 and 200T are 2 rack spaces high. The MPC300, 300T, 600 and
600T are 3 rack spaces high.