Alto MC250.4, Руководство пользователя

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1. INTRODUCTION
The MC250.4 Four Channels Power Amplifier is designed for professional use and provides unparalleled quality. It
Includes soft start, signal limit, two variable-speed-low-noise fans and a LED meter display. Each channel is equipped
with independent protective circuitry against open circuit, short circuit, mismatched loads and overheat. It includes four
independent channels with separate power supply. Furthermore, every channel has also a main LED that becomes
green for power-on indicator and green for muting or protection, another red LED that shows true amplifier clipping
and a yellow one for the limit stage. The high-quality components and the carefully designed circuits ensure
excellent audio performance and an extremely linear frequency response, giving crystal-clear sound in the high
range and an up-front, full-bodied bottom end. This amplifier guarantees total reliability and a trouble-free use even
in the most demanding conditions. We believe the MC250.4 not only look great, but provide a perfect performance,
what you get is unprecedented performance at an incredibly attractive price.
2. FEATURE
Innovative design and high stability power amplifier
Fan-cooled AB class high power amplifier in 19", 2U size
4 independent channels with separate protection system
DC, infrasonic, overheat & short circuit protection
Smart-designed protection system for auto re-operation after fault
Parallel-input: channel 1 to channel 2, channel 3 to channel 4
Allow selection of Stereo, Bridge or parallel operation
Ultra low-noise and hum
High-pass filter , allow selection of flat, 35 Hz or 75Hz, protect speakers and prevent speaker transformer saturation
with minimal effect on program material.
DIP switch control for clip limit, high-pass filter, bridge-mono selections
AUTO variable- speed-low-noise fans ensure high reliability even under demanding conditions.
Detachable Euroblock: " Barrier strip" input connectors.
Rugged amplifier in a strong, compact chassis