Marantz Model 940 Manual

The Marantz Model 940 is a high-performance stereo receiver featuring advanced audio processing, multiple input/output options, and premium build quality. This manual covers setup, operation, and maintenance for optimal performance. Below are key sections for features, installation, operation, specifications, and troubleshooting.

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

Features at a Glance

Key components: High-power amplifier section, digital audio processing, multiple analog/digital inputs, network connectivity, remote control, and premium speaker terminals.

Feature	Description
Power Output	100W per channel (8 ohms)
Inputs	Phono, CD, Tuner, Aux, Tape, Digital Coaxial/Optical
Outputs	Speaker A/B, Tape Out, Pre-out
Network	Ethernet, Wi-Fi, Bluetooth
Tone Controls	Bass, Treble, Balance
Remote Control	Full-function infrared remote
Display	Fluorescent display with dimmer
Headphone Jack	Front panel 1/4" stereo jack
Protection Circuit	Overload and thermal protection
Power Consumption	280W maximum

Installation

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

Connect speakers: Use high-quality speaker wire to appropriate terminals.
Connect audio sources: Use RCA cables for analog sources, digital cables for digital sources.
Connect antenna: Attach FM/AM antennas for radio reception.
Network connection: Connect Ethernet cable or setup Wi-Fi.
Plug into AC power outlet.

WARNING! Ensure adequate ventilation around unit. Do not block ventilation openings.

First-Time Setup

Power on receiver; follow initial setup procedure.

Source selection: Rotate input selector to desired source.
Speaker setup: Select Speaker A/B or both using front panel buttons.
Volume adjustment: Set initial volume to minimum, then adjust as needed.
Network setup: Access setup menu to configure network connections.
Tone controls: Set bass, treble, and balance to neutral positions initially.

CAUTION! Always turn volume down before switching sources or powering off.

Specifications

Power Output: 100W + 100W (8 ohms, 20Hz-20kHz)
Total Harmonic Distortion: 0.08% (rated power)
Frequency Response: 10Hz-100kHz (+1/-3dB)
Input Sensitivity: Phono: 2.5mV, Line: 200mV
Signal-to-Noise Ratio: Phono: 80dB, Line: 100dB
Dimensions: 17-1/8" W × 6" H × 15" D
Weight: 28.6 lbs (13 kg)
Power Requirements: 120V AC, 60Hz
Standby Power: 0.5W

Controls and Settings

Front Panel: Power, Volume, Input Selector, Speaker A/B, Tone Controls, Headphone Jack.

Remote: Power, Input Selection, Volume, Mute, Tone Controls, Display Dimmer.

Input Selection: Phono, CD, Tuner, Aux, Tape. Tone Controls: Bass (±10dB), Treble (±10dB), Balance. Display: Source, volume level, audio format. Setup Menu: Network configuration, speaker settings, factory reset.

Connecting Devices

Analog Inputs: Phono, CD, Tuner, Aux, Tape. Digital Inputs: Coaxial, Optical. Outputs: Speakers, Tape Out, Pre-out.

Turn off receiver before making connections.
Use high-quality interconnects for best performance.
Match cable colors to appropriate terminals.
Ensure secure connections to prevent signal loss.
Connect turntable to Phono input only.

Tip: Keep signal cables away from power cords to minimize interference.

Audio Settings

Optimize sound quality with proper tone and balance settings.

Bass Control: Adjust low frequency response (+10dB to -10dB)
Treble Control: Adjust high frequency response (+10dB to -10dB)
Balance: Adjust left/right channel balance
Loudness: Engage for enhanced bass at low volumes
Direct Mode: Bypass tone controls for pure signal path
Speaker Selection: Choose A, B, or A+B speaker outputs

Note: Use tone controls sparingly; flat response often provides most accurate sound.

Network Features

Network connectivity for streaming and multi-room audio.

Ethernet: Connect directly to router for stable connection
Wi-Fi: Configure through setup menu for wireless operation
Bluetooth: Pair with compatible devices for wireless audio
Streaming: Access online music services via network connection
Firmware Updates: Download latest software improvements

Network Requirements: Broadband internet connection, router with available ports.

Care & Maintenance

Unplug before cleaning. Use soft, dry cloth for exterior. Avoid chemical cleaners.

CAUTION! Do not use liquids or sprays. Keep away from moisture and extreme temperatures.

Regulatory Information

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power cord, outlet	Check power connection; try different outlet; check fuse.
No sound	Speaker connections, volume	Verify speaker wires; check volume level; ensure correct input selected.
Distorted sound	Overload, connections	Reduce volume; check source quality; verify all connections.
No network connection	Cables, settings	Check Ethernet cable; verify network settings; restart router.
Remote not working	Batteries, obstacles	Replace batteries; ensure clear path to IR sensor; check remote mode.

Reset: Hold Power + Input Selector for 5 seconds to factory reset.

Service: Contact authorized Marantz service center for repairs.