Marantz MM8003 manual Features

ENGLISH

FEATURES BEFORE USE

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 flagship models.

Current feedback type of discrete power amplifier 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 Amplifier. 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

Achimney-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 efficiency. 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 amplifier.

These features together make for lavish specifications 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 fields 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.

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.

Left	Above	Right
8 inchs (0.2 m)	8 inchs (0.2 m)	8 inchs (0.2 m) or
or more	or more	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.

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