Marantz 8003 Manual

The Marantz 8003 is a high-performance audio amplifier featuring advanced digital processing, multiple input options, high-quality audio components, remote control operation, tone controls, balance adjustment, headphone output, and speaker connectivity. Powered by 120V AC, 60Hz. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: High-power amplifier section, Remote Control, Multiple audio inputs, Speaker terminals, Headphone jack, Tone controls.

Feature	Description
Power output	High-power amplification for stereo speakers
Audio inputs	Multiple RCA inputs for various audio sources
Speaker terminals	For connecting left and right speakers
Headphone jack	For private audio listening
AC input connector	For power connection
Tone controls	Bass and treble adjustment
Balance control	Left/right speaker balance adjustment
Input selector	Switches between different audio sources
Volume control	Main volume adjustment knob
Power switch	Turns amplifier on/off

Installation

Unpack and inspect contents. Place on stable, well-ventilated surface.

1. Connect speakers: Attach speaker wires to appropriate terminals (left/right).
2. Connect audio sources: Use RCA cables to connect CD player, tuner, or other sources.
3. Connect to AC power: Use provided power cord.
4. Ensure proper ventilation: Leave space around unit for heat dissipation.

WARNING! Unit may become hot during operation; ensure adequate ventilation. Use proper gauge speaker wire.

First-Time Setup

Power on amplifier; verify all connections.

1. Select input source: Turn INPUT selector to desired source (CD, TUNER, AUX).
2. Set volume: Start with low volume and adjust gradually.
3. Adjust tone controls: Set bass and treble to neutral position initially.
4. Balance adjustment: Center balance control for equal left/right output.

CAUTION! Avoid turning volume to maximum immediately. Check speaker polarity.

Specifications

• Power Output: High-power stereo amplification.
• Frequency Response: 20Hz - 20kHz.
• Total Harmonic Distortion: Less than 0.1%.
• Inputs: Multiple RCA audio inputs.
• Outputs: Speaker terminals, headphone jack.
• Tone Controls: Bass and treble adjustment.
• Remote Control: Included for remote operation.
• Power Source: 120V AC, 60Hz.
• Operating Temp: Standard room temperature.

Controls and Settings

Front Panel: POWER, INPUT SELECTOR, VOLUME, BASS, TREBLE, BALANCE, HEADPHONE.

Remote: POWER, INPUT SELECTION, VOLUME UP/DOWN, MUTE, TONE CONTROLS.

Audio Controls: BASS (low frequency adjustment), TREBLE (high frequency adjustment), BALANCE (left/right speaker balance). Input Selection: CD, TUNER, AUX, TAPE. Volume: Main output level control. Headphone: Private listening output.

Connecting Devices

Audio Sources: RCA inputs for CD player, tuner, tape deck. Speakers: Left/right speaker terminals.

1. Turn off amplifier before connecting devices.
2. Match RCA cables to appropriate inputs (red/white connectors).
3. Connect speakers ensuring proper polarity (+/- terminals).
4. Select input via INPUT selector knob.

Tip: Use high-quality audio cables for best sound quality.

Audio Source Operation

Supports various audio sources including CD players, tuners, and auxiliary devices.

1. Select source: Turn INPUT selector to desired source.
2. Adjust volume: Use volume control to set listening level.
3. Play source: Start playback on connected device.
4. Tone adjustment: Use bass and treble controls to suit listening preference.
5. Balance: Adjust if sound seems weighted to one side.
6. Headphone use: Plug headphones into front jack for private listening.

WARNING! Do not operate at extremely high volumes for extended periods.

Sound Adjustment Features

Tone Controls: Bass and treble adjustment for customized sound. Balance Control: Left/right speaker balance adjustment. Direct Mode: Bypass tone controls for pure audio signal.

Care & Cleaning

Unplug before cleaning. Use soft, dry cloth only; no liquids or chemical cleaners.

CAUTION! Do not spray liquids; keep away from moisture and extreme temperatures.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. Copyright © 2006 Marantz; trademarks of Marantz America, Inc. For support, visit www.marantz.com or contact authorized service centers.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No sound output	Volume/connections	Check volume setting; verify speaker connections; ensure input source selected.
Distorted sound	Volume level/speakers	Reduce volume; check speaker impedance compatibility.
One channel silent	Balance/connections	Check balance control; verify speaker wire connections.
Remote not working	Batteries/obstacles	Replace batteries; ensure clear line of sight to IR sensor.
Unit overheats	Ventilation	Ensure adequate ventilation space around unit.

Reset: Power cycle unit if experiencing issues.

Service: Contact authorized Marantz service center; www.marantz.com