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Protection systems
The MXA-8400 is protected from overload and failure by several protection systems. All systems are
continuously active while the amplifier is powered on and operating.
In the internal power supply, the processed power is continuously measured over time. This means the power
supply of the MXA-8400 will be able to process enormous amounts of power within short time period, but if
excessive power draw continues over longer time, the PSU will close down to protect itself and the house
mains installation.
The amplifier outputs will protect themselves individually against over-current by limiting the current. If
continuous operation at the current limit threshold is seen (running in current-limiting more than
approximately 12% over time) a mute cycle is triggered. If the short circuit or over current situation continues,
overload protection triggers after approximately 10ms. During a mute cycle the output stage is disabled (left in
high-impedance state) for approximately 1 second. Following a mute cycle, normal operation is automatically
resumed and no involvement from user is required.
Cleaning and maintenance
The MXA-8400 does not require any regular maintenance except to keep its exterior clean. Simply wipe it with
a clean, soft cloth. Do not use cleaner or any liquid directly on the product. A small amount of non-abrasive
cleaner on the cloth can be used to remove any dirt or fingerprints. Do not use abrasive cleaners or cleaners
containing liquid solvents.
Technical assistance
If you have any questions regarding your Lyngdorf product, please contact your nearest Lyngdorf
representative or contact Lyngdorf Audio:
SL Audio A/S
Rævevej 3
7800 Skive
Denmark
E-mail: contact@lyngdorf.com
Web: www.steinwaylyngdorf.com
Lyngdorf Audio MXA-8400 – Owner's manual
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