Alto DPA 1500, Service Manual

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2
1.
I
ntroduction
ALTO MISTRAL amplifiers are series of innovative design power amplifiers. This series work
under high stability with great power supply in just 2-rack spaces. Air flow is from back to front
panel to keep in a nice air circulation inside the Rack. The automatic fan, which affects machines’
temperature includes various kinds of speed, therefore, this low-noise fan makes a good result in
cooling the heat from machines.
MISTRAL amplifiers include 2 independent channels with separate protection system and
power supply. The independent protection system avoids opening circuit, short, wrong loading or
over-heating. The special-designed protective system applies automatically restarting functions
upon the default status and then goes back to normal.
All electronic inputs equip standard power connectors. And all inputs are electronic balanced,
with hi-quality transformer, MISTRAL amplifiers provide an outstanding performance in any
conditions.
z Innovative design and high stability power amplifiers.
z Fan-cooled AB class high power amplifier in 19”rack, 2Usize
z Rugged amplifiers in a strong, compact chassis.
z
2 independent channels with separate protection system and power supply
z smart-designed protection system for auto re-operation after fault.
z Auto-adjusting speed fan.
z
4LEDs for operation/protection, limit, power on and clip
z HIGH-CURRENT TOROIDAL TRANSFORMER DESIGNED FOR HIGH POWER AT 2
Ohms with low noise.
z Independent DC and thermal overload protection on each channel.
z IEC standard power connectors.
z Binding post and NEUTRIK® SPEAKON outputs power connectors.
z Balanced XLR inputs/ parallel outputs.