Alto Professional MISTRAL400 User Guide
User's Manual
STEREO POWER
MISTRAL400
AMPLIFIER
LTO
www.altoproaudio.com
Version 1.1 MAY 2005
English
R
SAFETY RELATED SYMBOLS
CAUTION
RISK OFELECTRIC SHOCK
DO NOTOPEN
The symbol is used to indicate that some hazardous live terminals are involved within this apparatus,
even under the normal operating conditions.
The symbol is used in the service documentation
to indicate that a specific component shall be only
replaced by the component specified in that documentation for safety reasons.
Protective grounding terminal.
Alternating current /voltage.
Hazardous live terminal.
ON: Denotes the apparatus is turned on.
OFF: Denotes the apparatus is turned off, because it uses
the single pole switch, be sure to unplug the AC power to
prevent any electric shock before you proceed with your
service.
WARNING: Describes precautions that should be
observed to prevent the danger of injury or death to
the user.
CAUTION: Describes precautions that should be
observed to prevent danger of the apparatus.
WARNING
Power Supply
Ensures the source voltage matches the voltage of the
power supply before turning ON the apparatus.
Unplug this apparatus during lightning storms or when
unused for long periods of time.
External Connection
The external wiring connected to the output hazardous
live terminals requires installation by an instructed person,
or the use of ready-made leads or cords.
Do not Remove any Cover
There are maybe some areas with high voltages inside,
to reduce the risk of electric shock, do not remove any
cover if the power supply is connected.
The cover should be removed by qualified personnel
only.
No user serviceable parts inside.
Fuse
To prevent a fire, make sure to use fuses with specified
standard (current, voltage, type). Do not use a different
fuse or short circuit the fuse holder.
Before replacing the fuse, turn OFF the apparatus and
dis-connect the power source.
Protective Grounding
Make sure to connect the protective grounding to prevent
any electric shock before turning ON the apparatus.
Never cut off the internal or external protective grounding
wire or disconnect the wiring of protective grounding terminal.
Operating Conditions
This apparatus shall not be exposed to dripping or splashing and that no objects filled with liquids, such as
vases, shall be placed on this apparatus.
To reduce the risk of fire or electric shock, do not expose
this apparatus to rain or moisture.
Do not use this apparatus near water.
Install in accordance with the manufacturer's instructions.
Do not install near any heat sources such as radiators,
heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
Do not block any ventilation openings.
No naked flame sources, such as lighted candles, should
be placed on the apparatus.
IMPORTANT SAFETY INSTRUCTIONS
Read these instructions.
Follow all instructions.
Keep these instructions.
Heed all warnings.
Only use attachments/accessories specified by the manufacturer.
Power Cord and Plug
Do not defeat the safety purpose of the polarized or
grounding type plug. A polarized plug has two blades
with one wider than the other. A grounding type plug
has two blades and a third grounding prong. The wide
blade or the third prong are provided for your safety.
If the provided plug does not fit into your outlet, consult
an electrician for replacement of the obsolete outlet.
Protect the power cord from being walked on or pinched
particularly at the plug, convenience receptacles, and
the point where they exit from the apparatus.
Cleaning
When the apparatus needs a cleaning, you can blow off
dust from the apparatus with a blower or clean with a rag
etc. Don't use solvents such as benzol, alcohol, or other
fluids with very strong volatility and flammability for cleaning
the apparatus body.
Clean only with a dry cloth.
Servicing
Refer all servicing to qualified personnel. To reduce the
risk of electric shock, do not perform any servicing other
than that contained in the operating instructions unless
you are qualified to do so.
Servicing is required when the apparatus has been damaged in any way, such as the power supply cord or plug
is damaged, liquid has been spilled or objects have fallen
into the apparatus, the apparatus has been exposed to
rain or moisture, does not operate normally, or has been
dropped.
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Preface
Dear Customer:
Thanks for choosing LTO MISTRAL400 Stereo Power Amplifier and thanks for choosing one of the results of LTO
AUDIO TEAM job and researches.
For our LTO AUDIO TEAM, music and sound are more than a job ...are first of all passion and let us say...our obsession!
We have been designing professional audio products for a long time in cooperation with some of the major brands in the
world in the audio field.
The LTO line presents unparalleled analogue and digital products made by Musicians for Musicians in our R&D Centers
in Italy Netherlands, United Kingdom and Taiwan. The core of our digital audio products is a sophisticated DSP (Digital
Sound Processor) and a large range of state of the art algorithms which have been developed by our Software Team for
the last 7 years.
Because we are convinced you are the most important member of LTO AUDIO TEAM and the one confirming the quality
of o and your comments.ur job, we'd like to share with you our work and our dreams, paying attention to your suggestions
Following this idea we create our products and we will create the new ones! From our side, we guarantee you and we
will guarantee you also in future the best quality, and the best fruits of our continuous researches and the best prices.
Our LTO MISTRAL400 Stereo Power Amplifier is the result of many hours of listening and tests involving common people,
area experts, musicians and technicians.The result of this effort is the sophisticated circuit design featuring high power
and superb quality together with superiorreliability and stability to provide the highest possible audio performance.
Nothing else to add, but that we would like to thank all the people that made the LTO MISTRAL400 Stereo Power Amplifier
a reality available to our customers, and thank our designers and all the LTO staff, there to make possible therealization of
products containing our idea of music and sound and there to support you, our customers, In the best way, conscious that you
are our best richness.
Thank you very much.
LTO AUDIO TEAM
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TABLE OF CONTENTS
1. INTRODUCTION...................................................................................................................... .........4........
2. FEATURES .... .........................................................................................................................................4
3. CONTROL ELEMENTS ........................................................................... .................................................5
3.1 The Front Panel
3.2 The Rear Panel
4. APPLICATION .................................................................................................. .....................................7
4.1 Stereo Mode
4.2 Bridge Mode
5. TECHNICAL SPECIFICATIONS ................................................................................................... ........9
6. WARRANTY ........... ................................................................................. ............................................10
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