Marantz SR4023 Stereo Receiver Manual

The Marantz SR4023 is a high-performance stereo receiver featuring 100 watts per channel, multiple audio inputs, AM/FM tuner, remote control, tone controls, speaker A/B switching, and advanced audio processing. Designed for audiophile-quality sound reproduction with Marantz's signature musicality and build quality. 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. Tuner Operation 8. Audio Settings 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: High-power amplifier section, AM/FM tuner, multiple audio inputs, remote control, speaker terminals, tone controls.

Feature	Description
Power Output	100 watts per channel (8 ohms, 20Hz-20kHz)
Audio Inputs	CD, Tape, Phono, Aux, Tuner
Speaker Outputs	A/B speaker switching
Tone Controls	Bass and Treble adjustment
Remote Control	Full-function infrared remote
Headphone Jack	3.5mm stereo headphone output
AM/FM Tuner	30 station presets
Loudness Control	Enhanced bass at low volumes
Power	Turns receiver on/off
Volume Control	Motorized volume knob

Installation

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

Connect speakers: Use speaker wire to connect to A/B speaker terminals.
Connect audio sources: Use appropriate cables for CD player, turntable, tape deck, etc.
Connect antenna: Attach AM loop antenna and FM wire antenna.
Plug into AC power outlet.

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

First-Time Setup

Power on receiver; follow initial setup procedure.

Set input source: Rotate input selector to desired source (CD, Phono, etc.).
Adjust volume: Start with volume at minimum, gradually increase.
Set tone controls: Begin with flat response (bass and treble at 12 o'clock).
Program tuner presets: Use auto-scan to store AM/FM stations.

CAUTION! Ensure all connections are secure before powering on. Use proper grounding.

Specifications

Power Output: 100W + 100W (8 ohms, 20Hz-20kHz)
Total Harmonic Distortion: 0.08%
Frequency Response: 10Hz-50kHz
Input Sensitivity: Phono: 2.5mV, Line: 200mV
Signal-to-Noise Ratio: Phono: 80dB, Line: 100dB
Tone Controls: Bass: ±10dB, Treble: ±10dB
Speaker Impedance: 4-16 ohms
Power Consumption: 280W
Dimensions: 17-1/8" W x 5-1/4" H x 14-3/8" D
Weight: 20.3 lbs

Controls and Settings

Front Panel: POWER, VOLUME, INPUT SELECTOR, BASS, TREBLE, BALANCE, LOUDNESS, SPEAKERS A/B.

Remote: POWER, INPUT SELECT, VOLUME UP/DOWN, MUTE, TUNER PRESETS, TONE CONTROLS.

Input Selection: CD, TAPE, PHONO, AUX, TUNER. Tone Controls: Bass (±10dB), Treble (±10dB). Speaker Selection: A, B, A+B. Loudness: On/Off for bass enhancement. Balance: Left/Right channel balance.

Connecting Devices

Audio Sources: CD player, turntable, tape deck, auxiliary devices. Speakers: Main speakers A/B.

Turn off receiver before connecting devices.
Match cables to inputs (RCA for line level, ground wire for phono).
Connect speakers observing correct polarity (+/-).
Select input via front panel selector.

Tip: Use high-quality cables for best audio performance. Keep cables away from power cords.

Tuner Operation

AM/FM tuner with 30 station presets.

Select TUNER input on front panel.
Choose AM or FM band using remote or front panel.
Tune stations: Manual tuning or auto-scan.
Store presets: Press and hold preset button while station is tuned.
Recall presets: Press numbered preset buttons.
Mono/stereo: Auto-switching for FM stereo reception.

WARNING! Ensure proper antenna connection for best reception. Position antennas for optimal signal.

Audio Settings

Tone Controls: Adjust bass and treble to preference. Loudness: Compensates for Fletcher-Munson curves at low volumes. Balance: Adjust left/right channel balance. Speaker Selection: Choose A, B, or both speaker sets.

Care & Maintenance

Unplug before cleaning. Use soft, dry cloth for exterior. Keep ventilation openings clear of dust.

CAUTION! Do not use liquid cleaners or aerosols. Avoid moisture and extreme temperatures.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. Copyright © Marantz America, Inc. For support, visit www.marantz.com or contact customer service. Manufactured under license from Marantz Japan.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No sound	Speaker connections/volume	Check speaker wires; ensure volume is up; verify input selection.
Distorted sound	Overload/speaker impedance	Reduce volume; check speaker impedance compatibility.
No power	Power cord/outlet	Verify power cord connection; check outlet function.
Poor FM reception	Antenna placement	Reposition FM antenna; ensure proper connection.
Remote not working	Batteries/obstructions	Replace batteries; ensure clear path to IR sensor.

Reset: Unplug unit for 30 seconds, then reconnect.

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