Marantz SR 780 Owner's Manual

The Marantz SR 780 is a high-performance AV receiver featuring Dolby Digital and DTS decoding, 5.1 channel surround sound, 100 watts per channel, multiple audio/video inputs, digital optical/coaxial inputs, AM/FM tuner, remote control, and advanced audio calibration. Designed for home theater enthusiasts with comprehensive connectivity options and premium sound quality. Below are key sections for setup, operation, features, and troubleshooting.

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

Features at a Glance

Key components: 5.1 channel amplifier, Dolby Digital/DTS decoder, AM/FM tuner, multiple audio/video inputs, remote control, speaker terminals.

FeatureDescription
Power Output100 watts per channel (all channels driven)
Audio DecodingDolby Digital, DTS, Pro Logic
Inputs6 audio/video inputs, 2 digital optical, 1 coaxial
Outputs5.1 channel pre-outs, subwoofer output
TunerAM/FM with 30 station presets
Speaker Terminals5-way binding posts for all channels
Remote ControlLearning remote with macro functions
Audio CalibrationAuto setup with included microphone
Video ConversionComposite to S-Video upconversion
Power Consumption500 watts maximum

Installation

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

  1. Connect speakers: Use speaker wire to connect front, center, surround, and subwoofer.
  2. Connect source devices: Use audio/video inputs for DVD, cable box, gaming consoles.
  3. Connect TV: Use monitor output to TV input.
  4. Connect antenna: AM loop and FM wire antennas.
  5. 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.

  1. Auto calibration: Connect setup microphone; run auto calibration in menu.
  2. Speaker configuration: Set speaker sizes, distances, levels.
  3. Input assignment: Assign sources to input buttons.
  4. Tuner setup: Auto-scan and store radio stations.
  5. Set preferences: Display language, volume limits, etc.

CAUTION! Ensure all connections are secure before powering on.

Specifications

Controls and Settings

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

Remote: POWER, INPUT SELECT, VOLUME, MUTE, SURROUND MODE, TUNER, SETUP.

Audio Settings: Bass, Treble, Balance, Loudness, Night Mode. Video Settings: Brightness, Contrast, Color. Speaker Settings: Distance, Level, Crossover, Size. Tuner Settings: Presets, Auto Scan, Manual Tuning. System Settings: OSD Language, Volume Limit, Input Rename.

Connecting Devices

Audio Sources: CD player, turntable, tape deck. Video Sources: DVD, cable box, gaming console.

  1. Turn off receiver and devices before connecting.
  2. Use appropriate cables (RCA, optical, coaxial).
  3. Assign inputs via SETUP menu.
  4. Connect speakers observing polarity.

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

Audio Setup and Calibration

Auto calibration with included microphone.

  1. Place microphone at listening position.
  2. Access auto setup in menu system.
  3. Follow on-screen instructions for test tones.
  4. Review and adjust results as needed.
  5. Manual adjustments: Speaker levels, distances, crossover.
  6. Surround modes: Dolby Digital, DTS, Pro Logic, Stereo.

WARNING! Ensure quiet environment during calibration for accurate results.

Remote Control Operation

Learning remote with macro programming.

  1. Device selection: Press device button (TV, DVD, CBL, etc.)
  2. Volume control: Master volume and individual input trim.
  3. Surround mode selection: Cycle through available modes.
  4. Macro programming: Record sequences of commands.
  5. Input selection: Direct access or cycling.

Care & Maintenance

Unplug before cleaning. Use soft dry cloth; avoid chemicals.

CAUTION! Do not block ventilation openings. Keep away from moisture.

Regulatory Information

FCC Part 15: Class B digital device compliant. Copyright © Marantz America. For support, visit www.marantz.com or contact 1-800-270-2748. Manufactured under license from Dolby Laboratories.

Troubleshooting

SymptomPossible CauseCorrective Action
No soundInput selection/speakersCheck input selection; verify speaker connections; ensure volume up.
No videoCables/inputCheck video cables; verify input selection; try different input.
Remote not workingBatteries/obstructionsReplace batteries; ensure line of sight to receiver.
OverheatingVentilationEnsure adequate ventilation; clear vents of obstructions.
No surround soundSource/settingsCheck source material; verify surround mode selection.

Reset: Press POWER while holding SURROUND MODE and TUNER PRESET 1.

Service: 1-800-270-2748; www.marantz.com

Marantz SR 780 Owner's Manual © - All Rights Reserved 2025