marantz 4430 manual

The Marantz 4430 is a high-performance stereo receiver featuring 4-channel capability, 30 watts per channel RMS power, built-in Dolby decoder, AM/FM tuner with quartz PLL synthesizer, multiple audio inputs/outputs, speaker selector, loudness control, and advanced tone controls. 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 Source Selection 8. Advanced Features 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Front panel controls, rear panel connectors, remote control, AM/FM antennas, speaker terminals.

Feature	Description
Power Output	30 watts RMS per channel (4 channels)
Tuner Section	AM/FM with quartz PLL synthesizer
Inputs	Phono, AUX, Tape 1, Tape 2, 4-channel discrete
Outputs	Speaker A/B, headphone, tape monitor
Dolby Decoder	Built-in 4-channel matrix decoder
Tone Controls	Bass, treble, loudness contour
Speaker Selector	A/B speaker switching
Power Switch	Main power on/off
Volume Control	Master volume with balance
Mode Selector	Stereo/4-channel/quadraphonic modes

Installation

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

Connect speakers: Use speaker wire to connect to A/B speaker terminals.
Connect antennas: Attach FM dipole antenna and AM loop antenna.
Connect audio sources: Phono for turntable, AUX for CD player, Tape for cassette decks.
Plug into AC power outlet.

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

First-Time Setup

Power on receiver; initialize settings.

Tuner setup: Extend FM antenna fully; rotate for best reception.
Speaker configuration: Select A/B speakers using front panel switch.
Input selection: Choose appropriate source (Phono, AUX, Tape, etc.).
Tone adjustment: Set bass, treble, and loudness to preference.

CAUTION! Keep away from moisture and heat sources. Allow adequate space for ventilation.

Specifications

Power Output: 30 watts RMS per channel (4 ohms)
Total Harmonic Distortion: Less than 0.3%
Frequency Response: 20Hz - 20kHz ±1dB
Input Sensitivity: Phono: 2.5mV, AUX: 150mV
Signal-to-Noise Ratio: Phono: 70dB, AUX: 90dB
Tuner Section: FM stereo, AM broadcast
Dolby System: Matrix decoder for 4-channel
Power Requirements: 120V AC, 60Hz
Dimensions: Standard component width

Controls and Settings

Front Panel: Power switch, volume/balance, input selector, tone controls, mode selector, speaker switches.

Remote: Power, volume, input selection, mute, tuner presets.

Tone Controls: Bass (±10dB at 100Hz), Treble (±10dB at 10kHz), Loudness switch. Input Selection: Phono, AUX, Tape 1, Tape 2, 4-channel. Mode Selection: Stereo, 4-channel, quadraphonic. Tuner: Manual tuning, preset stations, stereo/mono switch.

Connecting Devices

Audio Sources: Phono input for turntable, AUX for CD/DVD players, Tape inputs for recorders.

Turn off receiver before connecting devices.
Match input types (phono to phono, line level to AUX).
Use quality shielded cables for best performance.
Connect speakers observing correct polarity.

Tip: Keep signal cables away from power cords to reduce hum.

Audio Source Selection

Supports multiple audio sources with individual input controls.

Select source: Use INPUT selector on front panel or remote.
Phono input: Specifically for magnetic phono cartridges.
AUX input: For CD players, tuners, other line-level sources.
Tape monitoring: Allows tape recording while listening to another source.
4-channel input: For discrete 4-channel sources.

WARNING! Do not connect phono-level sources to AUX inputs.

Advanced Features

4-Channel Operation: Matrix decoder for surround sound. Loudness Control: Compensates for Fletcher-Munson curves at low volumes. Tape Dubbing: Simultaneous recording from one tape deck to another.

Care & Maintenance

Unplug before cleaning. Use soft, dry cloth for exterior. Clean controls with contact cleaner if needed.

CAUTION! Do not use chemical cleaners on wood veneer. Keep ventilation openings clear.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits. Copyright © Marantz; all rights reserved. For technical support, contact authorized Marantz service centers. Specifications subject to change without notice.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No sound from speakers	Speaker selector/connections	Check speaker selector switch; verify speaker connections.
Hum or buzz	Grounding/cable issues	Check ground connections; separate signal and power cables.
Poor FM reception	Antenna positioning	Reposition FM antenna; check connections.
One channel silent	Balance control/cables	Adjust balance control; check input cables.
Overheating	Ventilation/speaker load	Ensure adequate ventilation; check speaker impedance.

Reset: Turn off and unplug for 30 seconds if unit locks up.

Service: Contact authorized Marantz service center for repairs.