Marantz MM9360 Introduction, Features, Names And Functions, SIGNAL indicator, PEAK indicator

1. INTRODUCTION

Thank you for purchasing the Marantz MM9360 or MM9340 power amplifier for your sound system. Please take a few minutes to read this manual thoroughly, before you attempt connections and operations.The illustrations used in this manual refer to the six channel MM9360, but the MM9340 operates in the same manner, only with four channels and more power per channel.

This Marantz appliance is a Multi channel power amplifier, that is designed for home theatre and high quality audio systems.

2. FEATURES

The MM9360 is a six channel power amplifier, and the MM9340 is a four channel power amplifier developed for use in hi-fi AV systems.

- It is a high-power amplifier with efficient MOSFET high- speed switching output stages, controlled by internal mi- croprocessor and DSP algorithms. Rated outputs per channel are 150W / 8 ohms for the MM9360 and 275W / 8 ohms for the MM9340.

-It is provided with the MARANTZ RC-5 remote control capability so its power can be controlled from a MARANTZ preamplifier or surround receiver (MARANTZ remote con- trol compatible products).

-The power amplifier is equipped with LED indicators for signal present, peak power, thermal status, and protect mode for each channel.

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-The power amplifier will accept RCA, 1/4" jack, or XLR input connectors.

3. NAMES AND FUNCTIONS

1. SIGNAL indicator

The signal present LEDs illuminate at an input level of about 13mVrms (-35.5dBu).

2. PEAK indicator

The clipping LEDs illuminate at an input level of about 870mVrms (+1.0dBu), with all channels driven by 1KHz into 8Ω. This indicates that the signal processing circuitry has determined output levels to be approaching the available power supply rails and has begun to “soften” signal peaks. Actual onset of “hard” clipping depends on audio program and total load impedance and does not occur until the sig- nal processing circuitry can no longer compensate, which means that signal integrity can be maintained even if the clipping indicators illuminate for short periods of time.

3. THERMAL indicator

The thermal LEDs illuminate when the temperature of any one of the heat sink extrusions reaches 85 to 90°C. Both channels of the affected amplifier module will shut off until the measured temperature drops below about 70°C. The amplifier should be able to maintain proper operation at an ambient room temperature of 50°C (122°F) or less with typical audio program and all channels driven into 4Ω.

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PR OT ECT

TH ER MA L

PEA K

SIGN A L

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PO W ER

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