marantz 4320 manual

The Marantz 4320 is a high-performance stereo receiver featuring advanced audio processing, multiple input/output options, and robust connectivity. This manual covers essential information for setup, operation, and maintenance of your Marantz 4320 receiver.

Features at a Glance

Key components: High-power amplifier section, multiple audio inputs, phono input, tape monitor, tone controls, and speaker outputs.

Feature	Description
Power Output	40 watts per channel into 8 ohms
Phono Input	For turntable connection with RIAA equalization
Tape Monitor	Dual tape inputs/outputs for recording
Tone Controls	Bass and treble adjustment
Speaker Outputs	Main and remote speaker connections
Loudness Control	Compensates for low-volume listening
Filter Controls	High and low frequency filters
Input Selector	Phono, Aux, Tuner, Tape 1, Tape 2
Volume Control	Master volume adjustment
Power Switch	Main power on/off control

Installation

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

1. Connect speakers: Attach speaker wires to main speaker terminals.
2. Connect audio sources: Use appropriate inputs for turntable, CD player, tape deck.
3. Connect antenna: Attach FM/AM antenna to respective terminals.
4. Plug into AC power outlet.

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

First-Time Setup

Power on receiver; verify all connections are secure.

1. Select input source: Turn INPUT SELECTOR to desired source (Phono, Aux, Tuner).
2. Adjust volume: Set VOLUME control to minimum before powering on.
3. Tune radio: Select Tuner input, adjust tuning for FM/AM stations.
4. Set tone controls: Adjust bass and treble to preference.

CAUTION! Always turn volume to minimum when connecting/disconnecting devices.

Specifications

• Power Output: 40W + 40W (8 ohms)
• Frequency Response: 10Hz - 50kHz
• Total Harmonic Distortion: 0.3%
• Input Sensitivity: Phono: 2.5mV, Aux: 150mV
• Signal-to-Noise Ratio: Phono: 70dB, Aux: 90dB
• Tone Controls: Bass: ±10dB at 100Hz, Treble: ±10dB at 10kHz
• Power Requirements: 120V AC, 60Hz
• Dimensions: 17" W × 5" H × 13" D
• Weight: 22 lbs

Controls and Settings

Front panel controls: POWER, INPUT SELECTOR, VOLUME, BASS, TREBLE, LOUDNESS, FILTERS.

Input Selection: Phono (turntable), Aux (CD/line level), Tuner (radio), Tape 1, Tape 2.

Tone Controls: Bass adjustment (100Hz), Treble adjustment (10kHz). Filters: High cut (reduces hiss), Low cut (reduces rumble). Loudness: Compensates for Fletcher-Munson curves at low volumes. Speaker Selection: Main speakers A/B.

Connecting Devices

Multiple input options: Phono, Aux, Tape 1/2, Tuner.

1. Turntable: Connect to Phono input (use ground wire).
2. CD Player: Connect to Aux input using RCA cables.
3. Tape Deck: Connect to Tape 1 or Tape 2 inputs/outputs.
4. Speakers: Connect to Main Speaker terminals observing polarity.

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

Audio Configuration

Optimize sound quality with proper settings.

1. Tone Controls: Adjust bass and treble to room acoustics.
2. Loudness: Engage for low-volume listening.
3. Filters: Use high filter for tape hiss, low filter for turntable rumble.
4. Balance: Adjust left/right channel balance if needed.
5. Tape Monitoring: Use for recording and playback monitoring.

Note: Phono input includes RIAA equalization specifically for magnetic cartridges.

Advanced Features

Tape Dubbing: Simultaneous recording from one tape deck to another. Speaker Selection: Drive multiple speaker pairs (Main A/B). Headphone Output: Private listening via front panel jack.

Care & Maintenance

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

CAUTION! Do not use solvents or abrasive cleaners. Keep away from moisture.

Regulatory Information

FCC Part 15 compliant. Manufactured to meet industry standards for audio equipment. Copyright © Marantz. For technical support, contact authorized Marantz service centers.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No sound from speakers	Speaker connections/input selection	Check speaker wires; verify input selector position.
Hum or noise	Grounding issues/cable problems	Ensure proper grounding; check cable connections.
One channel silent	Balance control/cable fault	Check balance setting; test with different source.
Distorted sound	Overload/clipping	Reduce volume; check source level.
No FM reception	Antenna connection	Verify FM antenna connection; adjust antenna position.

Service: Contact authorized Marantz service center for repairs.