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2
FEATURES
This 8-channel power amplifi er comes with upgraded
functions and supports the latest format of surround
sound without compromising the design technology
of Marantz's fl agship models.
Current feedback type of discrete power amplifi er
with high sound quality
The MM8003 features in all 8 channels the current
feedback type of power amplifi er, which uses the
complementary push-pull circuitry incorporated
in Marantz's SM-11S1 Hi-Fi Power Amplifier.
This improves the model's operating stability and
enables it to achieve high-density, high-speed sound
reproduction across a wide sound range.
In the rear section the power amplifi er is a current/
voltage conversion amplifier unit that employs a
Wilson current mirror circuit for amplifying sound up
to the treble range at low distortion levels.
Improved instantaneous current supply
capability
In the rear section of the power amplifier is the
LAPT (high-performance power transistor), which is
featured in Marantz's model SM-11S1 Hi-Fi Power
Amplifi er. This device improves the instantaneous
current supply capability.
Copper bus bars are featured in the unit that supplies
the power to each channel.
The power supply unit has a large toroidal transformer
that delivers low levels of noise and leakage fl ux
thanks to its internal structural features such as its
laminated core, silicon steel-plated core ring,etc.,
and the use of its shielded casing.
Original Marantz parts with a combined capacitance
of 100,000 µF (50,000µF/71V × 2), which have been
specially crafted to achieve the maximum in terms of
sound quality, are employed in the block capacitor, a
key component of the power supply unit.
Thanks to the improvements in the current supply
capability of these parts, you can enjoy high-powered
sound brimming with ambiance.
High-sound-quality design based on the pure
surround concept
A chimney-type heat sink and extremely quiet
cooling fan deal with the heat that is discharged
from the 8-channel amplifi er to a high degree of
effi ciency. A high-precision temperature sensor IC
is used to adjust the rotational speed of the cooling
fan in response to the changes in the amount of heat
generated by the amplifi er.
These features together make for lavish specifi cations
well suited to the amplifi er's use in high-end theater
systems, which are engineered to ensure virtually
noiseless operation.
The amplifi er's chassis is copper-plated to protect
the analog audio circuitry from high-frequency
noise. This is an important technological aspect
for reproducing sound without compromising the
delicately nuanced sound fi elds of Super Audio.
In addition, top-of-the-line audio capacitors, film
capacitors and other high-quality components are
used to achieve a high-sound-quality design.
BALANCED/UNBALANCED switching function
This function makes it possible to select BALANCED
or UNBALANCED input each channel depending on
the application.
Remote power control
By connecting the amplifier to Marantz's model
AV8003 AV pre-tuner, the amplifi er's power can be
switched on or off in tandem with the power on/off
operation of the AV8003 using the remote power
control function.
A fl oating ground connection that doesn’t form a
ground loop is used for the connection with the
AV8003 so the sound quality is not adversely
affected.
Other functions
Also provided are an IR fl asher input connector to
support customized installation, and DC trigger input
connector and output connectors.
BEFORE USE
This section must be read before any connection is
made to the mains supply.
EQUIPMENT MAINS WORKING SETTING
Your Marantz product has been prepared to comply
with the household power and safety requirements
that exist in your area.
MM8003 can be powered by 120V AC only.
COPYRIGHT
Recording and playback of any material may
require consent. For further information refer to the
following:
— Copyright Act 1956
— Dramatic and Musical Performers Act 1958
— Performers Protection Acts 1963 and 1972
— Any subsequent statutory enactments and
orders
DO NOT LOCATE IN THE FOLLOWING PLACES
To ensure long-lasting use, do not locate the unit
where:
• Exposed to direct sunlight.
• Near to sources of heat such as heaters.
• Highly humid or poorly ventilated.
• Dusty.
• Subjected to mechanical vibrations.
• On wobbly, inclined or otherwise unstable
surfaces
• Radiated heat is blocked such as in cramped
audio racks.
To ensure proper heat radiation, ensure the below
clearance from walls and other equipment.
8CH POWER AMPLIFIER MM8003
8CH POWER AMP LIFIER MM8003
POWER ON/OFF
POWER ON/OFF
STANDBY
STANDBY
Above
8 inchs (0.2 m)
or more
Left
8 inchs (0.2 m)
or more
Right
8 inchs (0.2 m) or
more
Rear
8 inchs (0.2 m) or
more
KEEP OBJECTS OFF
Keep objects off the unit. Blocking the vent can result
in accident and damage.
DO NOT TOUCH HOT SPOTS DURING AND
IMMEDIATELY AFTER USE
During and immediately after use, the unit is hot
in areas other than the controls and rear panel
connection jacks. Do not touch hot spots and
especially the top panel. Contact with hot areas can
cause burns.