JBL Professional MXP1200 - Manual (Page 3)

After decades of creating the best possible
loudspeaker components and systems for the
professional audio industry, JBL is proud to offer
the MPX Series of professional power amplifiers.
Night after night, concert after concert, you know
you can depend on JBL speakers. Now, with the
MPX line, JBL makes it possible to afford the same
level of performance and reliability in the rest of
your professional sound system.
The MPX Series starts with a design platform that
has endured years of road use with proven
reliability. The patented Grounded Collector®
design enhances power transistor cooling by
eliminating the need for transistor insulating wafers
— the deterioration of which is one of the primary
causes of amplifier failure.
Starting with this design, we added important
performance features, enabling you get the most
from your sound system:
l Oversized heat sinks and extra large high
volume fans keep the MPX amps cool in even the
highest ambient temperature environments.
l Low noise design ensures quiet operation.
l A variety of input connectors, including a
versatile removable barrier strip, makes hookup
and installation quick, easy, and secure.
l Transducer excursion protection circuitry
keeps speakers working reliably night after night.
l Power levels and high dynamic headroom
match the requirements of your professional JBL
loudspeaker system.
In short, JBL’s MPX amplifiers are the perfect
complement for your high performance
professional sound system.
RUNNING COOL
MPX amplifiers endure the ongoing punishment of
continual operation, even in high ambient
temperature environments. Multi-step power
supplies in the larger models run more efficiently
than conventional amplifiers, generating less heat.
Oversized heat sinks provide extra surface area for
cooling. Large high volume fans quietly blow up to
3.6 cubic feet of air every second directly onto the
heatsinks, resulting in highly efficient ‘turbulent”
cooling. Multiple speeds allow the fans to run
slowly when cooling is not needed, increasing
speed automatically as extra cooling is required.
Oversized heatsinks and powerful multiple-speed cooling
fans increase reliability and maintain stable, consistent
performance. This outstanding cooling capability allows
MPX Series to deliver power continuously in high ambient
temperature environments or into low impedance loads
longer than most other amplifiers.
The result, MPX amps run longer continuously
than most other power amplifiers on the market
today, without interrupting your performance by
going into thermal limiting or protection mode.
QUIET OPERATION
High quality double flux-banding of the power
transformers reduces external magnetic field
radiation, which can, in other power amplifiers,
induce audible hum into associated equipment and
High quality double flux-banded power transformers
reduce noise levels and magnetic field radiation which can
generate hum in associated equipment and cabling.
cabling. In addition, the latest technology
components are incorporated throughout the
design to ensure extremely low noise generation
from all MPX Series power amplifiers.
CONNECTOR VERSATILITY
MPX Series connections are extremely versatile.
On the input panel, you have a choice of balanced
or unbalanced XLR, 1/4 inch TRS jacks or a barrier
strip. The barrier strip provides a high measure of
connection reliability, yet is removable, making it
possible to make all hard-wire connections on a
workbench rather than behind a dark cramped
equipment rack. The barrier strip's grounding
jumpers allow you to configure the amp’s grounds
to accommodate most large system grounding
schemes.
In addition to balanced or unbalanced XLR and 1/4 inch
TRS phone jack connectors, we also provide a barrier strip
which is removable, making it possible to make all hard-
wire connections on a workbench rather than behind a
dark cramped equipment rack.
High quality output connectors accept dual banana
plugs as well as bare wire up to 8 gauge. For
additional reliability and safety, the bare wire ends
are securely contained in enclosed compartments
at the base of the banana jacks where they cannot
contact each other, the amp chassis, any stray wires
from the amp rack . . . or your fingers.
Easy-to-read graphics on the back panel give
instructions for configuring and connecting your
amplifier.