Marantz 4500 Manual

The Marantz 4500 is a classic stereo receiver featuring 45 watts per channel, AM/FM tuner, phono input, tape monitor, loudness control, and multiple audio inputs. This high-fidelity audio component delivers exceptional sound quality with robust construction and vintage Marantz styling. Below are key sections for operation, features, connections, specifications, and maintenance.

Features at a Glance

Key components: Power amplifier, AM/FM tuner, Phono preamp, Tape monitor, Tone controls, Speaker outputs.

Feature	Description
Power Output	45 watts per channel RMS at 8 ohms
Tuner Section	AM/FM stereo with signal strength meter
Phono Input	For turntable connection with RIAA equalization
Tape Monitor	Dedicated tape input/output for recording
Loudness Control	Compensates for low volume listening
Tone Controls	Bass and treble adjustment knobs
Speaker Selector	A/B speaker switching
Headphone Jack	For private listening
Balance Control	Left/right channel balance adjustment
Volume Control	Master volume knob with smooth taper

Installation

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

1. Connect speakers: Use speaker wire to connect to A or B speaker terminals.
2. Connect audio sources: Use appropriate inputs for turntable, tape deck, CD player.
3. Connect antenna: Attach FM dipole antenna and AM loop antenna.
4. Plug into AC power outlet.

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

First-Time Setup

Power on receiver; set initial controls.

1. Set volume to minimum before power on.
2. Select input source: Phono, Aux, Tape, Tuner.
3. Adjust balance control to center position.
4. Tune FM stations using tuning knob and signal meter.
5. Set tone controls to neutral position for initial listening.

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

Specifications

• Power Output: 45 watts per channel RMS (8 ohms)
• Frequency Response: 20Hz - 20kHz ±1dB
• Total Harmonic Distortion: <0.1% at rated power
• Input Sensitivity: Phono: 2.5mV, Aux: 150mV
• Signal-to-Noise Ratio: Phono: 70dB, Aux: 90dB
• Tuner Section: FM stereo, AM broadcast
• Dimensions: Standard 19-inch rack width
• Power Requirements: 120V AC, 60Hz
• Weight: Approximately 25 lbs

Controls and Settings

Front panel controls: Power switch, Input selector, Volume, Balance, Bass, Treble, Loudness, Speaker selector.

Input Selection: Phono, Aux, Tape, Tuner. Tone Controls: Bass ±10dB, Treble ±10dB. Loudness: On/Off switch for low-frequency boost. Speaker Selection: A, B, A+B, Off.

Tuner Controls: Tuning knob, FM stereo/mono switch, Signal strength meter. Tape Monitor: Allows monitoring of tape deck recording.

Connecting Components

Speaker Connections: Use A or B speaker terminals. Audio Inputs: Phono (turntable), Aux (CD/tuner), Tape in/out.

1. Turn off power before making connections.
2. Connect turntable to Phono input only.
3. Connect tape deck to Tape input and output for recording.
4. Connect CD player or other sources to Aux input.
5. Ensure proper grounding of turntable.

Tip: Use high-quality cables and ensure secure connections.

Tuner Operation

AM/FM stereo tuner with manual tuning.

1. Select Tuner input on selector knob.
2. Extend FM antenna fully for best reception.
3. Rotate tuning knob while watching signal meter.
4. Set FM stereo/mono switch to stereo for FM stations.
5. Fine-tune for strongest signal and minimum noise.
6. For AM, rotate loop antenna for best reception.

Note: Signal meter indicates station strength; tune for maximum reading.

Audio Adjustments

Tone controls and special features for optimal listening.

1. Bass Control: Adjusts low frequencies (50Hz).
2. Treble Control: Adjusts high frequencies (10kHz).
3. Loudness: Engages bass boost at low volume settings.
4. Balance: Adjusts left/right channel balance.
5. Speaker Selector: Choose A, B, or both speaker sets.

Recommendation: Set tone controls flat initially, then adjust to room acoustics.

Care & Maintenance

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

CAUTION! Do not use liquids or aerosols near controls. Keep away from moisture and extreme temperatures.

Regulatory Information

FCC compliant for home audio equipment. Manufactured to meet industry standards for audio performance and safety. Marantz is a registered trademark. For service or support, contact authorized Marantz service centers.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No sound from speakers	Speaker selector, volume	Check speaker selector setting; ensure volume is up; verify speaker connections
Hum or noise	Grounding, connections	Check turntable ground; ensure all cables secure; try different input
Poor FM reception	Antenna, location	Extend FM antenna fully; reposition for better reception
One channel silent	Balance, connections	Check balance control; verify cable connections to source
Distorted sound	Overload, settings	Reduce volume; check input level from source component

Service: Contact authorized Marantz service center for internal repairs.