Bogen BOGEN M300 Manuel D’Utilisation
Introduction
Bogen's M-Class amplifiers deliver on what professional sound installers need most: Flexibility, Power, and
Reliability.
Reliability.
Flexibility
The M-Class allows for the installation of up to 2 input modules, accepting inputs from microphones, telephone
systems, stereo sources, mono sources, or daisy-chaining of amplifiers. Each M-Class model comes standard with
a single, professional-quality, stereo, high-impedance balanced input module.
systems, stereo sources, mono sources, or daisy-chaining of amplifiers. Each M-Class model comes standard with
a single, professional-quality, stereo, high-impedance balanced input module.
The M-Class has three operating modes to meet different installation needs - Stereo, Dual Mono, or 70V Mono.
Front panel controls allow independent operation of each power amplifier channel in stereo mode. In either
70V Mono or Dual Mono modes, the inputs form a 2:1 mixer with the front panel controls setting the signal
levels from each input. Prioritized input modules and 2:1 mixer operation allow the M-Class to supply the front-
end signal processing required in paging systems and the power to cover any size installation.
Front panel controls allow independent operation of each power amplifier channel in stereo mode. In either
70V Mono or Dual Mono modes, the inputs form a 2:1 mixer with the front panel controls setting the signal
levels from each input. Prioritized input modules and 2:1 mixer operation allow the M-Class to supply the front-
end signal processing required in paging systems and the power to cover any size installation.
Power
With three different models (M600, M450, and M300), the M-Class provides 2-channel operation at 600W,
450W, and 300W per channel into 4-ohm loads. Single channel, 70V Mono operation capacities are 1200W,
900W, and 600W. Along with being powerful, these amplifiers are also compact - using up only 2 rack spaces
(3-1/2") in a standard 19" rack.
450W, and 300W per channel into 4-ohm loads. Single channel, 70V Mono operation capacities are 1200W,
900W, and 600W. Along with being powerful, these amplifiers are also compact - using up only 2 rack spaces
(3-1/2") in a standard 19" rack.
Reliability
Driven by a conservatively-rated toroidal power transformer, these amplifiers are built for solid performance
with low distortion and a high slew rate. Output module circuitry is located away from input module circuitry,
minimizing noise and ground loops.The amplifiers require little maintenance and cleaning as internal electron-
ic components are located outside of the forced air-stream flow. Front-mounted fan filters provide easy removal
and cleaning.
with low distortion and a high slew rate. Output module circuitry is located away from input module circuitry,
minimizing noise and ground loops.The amplifiers require little maintenance and cleaning as internal electron-
ic components are located outside of the forced air-stream flow. Front-mounted fan filters provide easy removal
and cleaning.
M-Class amplifers have a variety of electronic protection circuits including overcurrent, DC voltage, and ther-
mal circuits. A special Clip/Limiting circuit continuously monitors the amount of distortion in the output signal
and reduces input levels as the amplifier approaches clipping. Back-Slope™, Bogen’s unique voltage stabilization
circuitry, regulates the AC energy supplied to the power toroid. This improves both system performance and
reliability despite varying AC supply conditions.
mal circuits. A special Clip/Limiting circuit continuously monitors the amount of distortion in the output signal
and reduces input levels as the amplifier approaches clipping. Back-Slope™, Bogen’s unique voltage stabilization
circuitry, regulates the AC energy supplied to the power toroid. This improves both system performance and
reliability despite varying AC supply conditions.
An energy-conserving sleep mode (defeatable) with instant-on return signal operation reduces wasted heat
production in paging systems with intermittent use. In addition, large output heatsinks and dual independently-
controlled, high-output, variable speed fans provide superior cooling and quiet operation while reducing dust
accumulation.
production in paging systems with intermittent use. In addition, large output heatsinks and dual independently-
controlled, high-output, variable speed fans provide superior cooling and quiet operation while reducing dust
accumulation.
Bogen's M-Class amplifiers are enclosed in a heavy-gauge steel chassis, which prevents mechanical damage to
the unit's internal components even if the unit is subjected to rough handling and excessive portable installa-
tions.The control knobs are located in a recessed section of the cast aluminum front panel to reduce the like-
lihood of mishandling and damage.The angled design of the amplifier's front panel allows easy finger access to
the front knob cover when the amplifiers are stacked tightly in a rack.
the unit's internal components even if the unit is subjected to rough handling and excessive portable installa-
tions.The control knobs are located in a recessed section of the cast aluminum front panel to reduce the like-
lihood of mishandling and damage.The angled design of the amplifier's front panel allows easy finger access to
the front knob cover when the amplifiers are stacked tightly in a rack.
Package Contents
* M-Class Amplifier
* 2 Rack Ears
* 2 Filters and Grilles
* Instruction Manual
* Control Knob Cover
* Balanced Input Module (pre-installed)
* 4 Rubber Feet & Screws
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