marantz sr 18u manual

The Marantz SR 18U is a high-performance audio/video receiver featuring Dolby Digital and DTS decoding, multiple audio/video inputs, AM/FM tuner, remote control, speaker setup calibration, multi-room audio capability, and advanced audio processing. With 100 watts per channel, 5.1 channel surround sound, digital optical/coaxial inputs, and comprehensive connectivity options. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Audio/Video Operation 8. Advanced Features 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Dolby Digital/DTS decoder, AM/FM tuner, remote control, multiple audio/video inputs, speaker terminals, multi-room capability.

Feature	Description
Power Output	100 watts per channel (5 channels)
Audio Decoding	Dolby Digital, DTS, Pro Logic
Inputs	6 audio/video, 2 digital optical, 1 coaxial
Outputs	5.1 channel pre-outs, tape monitor, multi-room
Tuner	AM/FM with 30 station presets
Remote Control	Learning remote with macro functions
Multi-room	Zone 2 audio output capability
Speaker Setup	Auto calibration with microphone
Video Conversion	Composite to S-Video upconversion
Display	Fluorescent front panel display

Installation

Unpack and inspect contents. Place in well-ventilated area.

Connect speakers: Use speaker wire to connect front, center, surround speakers.
Connect audio sources: CD player, tape deck, turntable to appropriate inputs.
Connect video sources: DVD player, VCR, cable/satellite box to video inputs.
Connect TV: Use monitor output to television.
Plug into AC power.

WARNING! Ensure proper ventilation; do not block vents. Use correct speaker impedance.

First-Time Setup

Power on receiver; follow on-screen display or front panel prompts.

Speaker setup: Connect calibration microphone; run auto setup procedure.
Input assignment: Assign sources to appropriate input buttons.
Tuner setup: Auto-scan for AM/FM stations; store presets.
Audio settings: Configure bass, treble, balance, and surround modes.
Video settings: Adjust video output levels and conversion settings.

CAUTION! Allow adequate space for heat dissipation; minimum 4 inches clearance.

Specifications

Power Output: 100W x 5 (8 ohms, 20Hz-20kHz)
Total Harmonic Distortion: 0.05%
Frequency Response: 20Hz-20kHz (+0/-3dB)
Signal-to-Noise Ratio: 100dB
Input Sensitivity: 200mV
Digital Inputs: 2 optical, 1 coaxial
Video Inputs: 6 composite, 3 S-Video
Speaker Impedance: 6-16 ohms
Power Consumption: 450W maximum
Dimensions: 17.1" W x 6.4" H x 15.7" D

Controls and Settings

Front Panel: POWER, INPUT SELECT, VOLUME, TUNER PRESETS, HEADPHONE JACK.

Remote: POWER, INPUT SELECT, VOLUME, MUTE, SURROUND MODE, TUNER, TAPE, CD, DVD, NUMERIC, MENU.

Audio: BASS, TREBLE, BALANCE, LOUDNESS, SURROUND MODE (DOLBY DIGITAL, DTS, PRO LOGIC). Video: INPUT SELECT, MONITOR OUT. Tuner: AM/FM SELECT, AUTO SCAN, PRESET MEMORY. Setup: SPEAKER CONFIG, INPUT ASSIGN, DELAY TIME, TEST TONE.

Connecting Devices

Audio: CD, tape, turntable. Video: DVD, VCR, cable/satellite. Digital: Optical/coaxial sources.

Turn off receiver and devices before connecting.
Match cable types to appropriate inputs (RCA for audio, optical for digital).
Assign inputs using front panel or remote control INPUT SELECT.
Connect speakers observing correct polarity (+/-).

Tip: Use high-quality cables for best audio/video performance.

Audio/Video Operation

Supports various audio formats and video sources.

Select input: Press INPUT SELECT for desired source (CD, DVD, TUNER, etc.).
Adjust volume: Use VOLUME control; MUTE for temporary silence.
Select surround mode: Choose DOLBY DIGITAL, DTS, or PRO LOGIC as appropriate.
Tuner operation: AM/FM selection, station presets, auto scan.
Tape monitoring: For recording and playback functions.
Multi-room: Zone 2 operation for second room audio.

WARNING! Do not exceed maximum power ratings; match speaker impedance.

Advanced Features

Auto Speaker Calibration: Uses microphone to set levels and distances. Multi-room Audio: Zone 2 output for second room. Learning Remote: Can control other components. Input Renaming: Custom names for connected sources.

Care & Maintenance

Unplug before cleaning. Use soft, dry cloth for exterior; compressed air for vents.

CAUTION! Do not use liquid cleaners; avoid moisture near electrical components.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits. Copyright © Marantz America, Inc. Dolby and DTS are registered trademarks. For support, visit www.marantz.com or contact 1-800-270-2873.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power cord/outlet	Check power cord connection; verify outlet function.
No sound	Speaker connections/mute	Check speaker wires; ensure not muted; verify input selection.
Poor reception	Antenna connection	Ensure antenna connected properly; adjust antenna position.
Remote not working	Batteries/obstructions	Replace batteries; ensure clear path to IR sensor.
Overheating	Ventilation	Ensure adequate ventilation; clear vents of obstructions.

Reset: Press and hold TUNER PRESETS + POWER for 5 seconds.

Service: 1-800-270-2873; www.marantz.com