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ENGLISH
FEATURES AND BENEFITS
Power Management and Cooling System
The MGA11000H and MGA11500H Amplifiers are equipped with a state-of- the- art power to
optimise the amplifier’s power and temperature. This intelligent circuit monitors the
amplifiers operation and automatically adjust the output power and fan speed to optimize
the performance as well as long term operation of the amplifier. If the amplifier is run at a
level below clipping for a period of 5 mins, the amplifier will go into a lower power mode to
improve run times. Once in the lower power mode any clipping indication will remove the
amplifier from the lower power mode into the full power mode.
To mantian cool operation, the fans will speed up and run at high speed when clipping is
detected for 30 seconds or when the amplifier reaches high temperatures. If the amplifier
reaches maximum temperature and goes into thermal protection, the fans will continue to
run untill the amplfier cools down.
Thermal trip Points
88C - Thermal Protection - Amplifier Shuts off to cool down.
78C - Thermal Protection Hysteresis Point - Amplifier Resumes Operation.
70C - Amplifier is Hot - Power Management Reduces Power and Increases Fan Speed
65C - Amplifier is in Normal operation conditions.
DC Offset Protection
This circuit protects the output of the amplifier against DC voltage. If for some reason DC
voltage is detected at the output stage, the amplifier will shut down protecting the
speakers from direct current.
Short Circuit Protection
This circuit protects the amplifier from damage due to a short found in the speakers or
wiring. If one of the speakers or its wiring comes in contact with ground, the amplifier will
shut down. To resume normal operation, correct the problem and turn the head unit off,
then back on. The amplifier will reset and play again.
Built-in Crossover
The “MGA” amplifiers include a built-in variable low pass crossover. The crossover
features a variable frequency selection (30Hz ~ 250Hz) for precise low pass filtering.
Bass Boost
For added low frequency performance the amplifiers include a variable 0 ~15dB bass boost
with an adjustable center frequency from 30Hz to 125Hz.
Diagnostic Lighting
The MGA11000H and MGA11500H are equipped with diagnostic lighting to display the
operation status of the amplifier. Please see the trouble shooting section of the manual
for a list of the modes and description of this feature.
MGA AMPLIFIERS