Marantz PM 493 User Manual

The Marantz PM 493 is a high-quality stereo integrated amplifier featuring multiple audio inputs, phono stage, tone controls, loudness compensation, and headphone output. With robust construction and advanced circuitry, it delivers exceptional audio performance for home stereo systems. 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. Operation Guide 8. Audio Features 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: High-power amplifier section, multiple input selection, phono preamp, tone controls, headphone output, speaker terminals.

FeatureDescription
Power OutputHigh-quality stereo amplification
Input SelectionMultiple source inputs including phono
Phono StageBuilt-in MM phono preamplifier
Tone ControlsBass and treble adjustment
Loudness CompensationEnhanced listening at low volumes
Headphone Output6.3mm jack for private listening
Speaker TerminalsHigh-quality binding posts
Power SwitchMain power on/off control
Volume ControlPrecision volume adjustment
Input SelectorSource input selection knob

Installation

Unpack and inspect contents. Place on stable, level surface with adequate ventilation.

  1. Connect speakers: Use high-quality speaker cable to connect speakers to appropriate terminals.
  2. Connect audio sources: Use RCA cables to connect CD player, tuner, tape deck, or turntable.
  3. Connect phono: For turntable, use PHONO input with proper grounding.
  4. Plug into AC power outlet.

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

First-Time Setup

Power on amplifier; verify all connections are secure.

  1. Set input selector: Rotate to desired source (PHONO, CD, TUNER, etc.).
  2. Adjust volume: Start with volume at minimum, then gradually increase.
  3. Set tone controls: Begin with flat response (12 o'clock position).
  4. Test all inputs: Verify each source functions properly.

CAUTION! Always turn volume to minimum before powering on or changing sources.

Specifications

Controls and Settings

Front panel controls: Power switch, input selector, volume control, tone controls, loudness switch.

Rear Panel: Input jacks, speaker terminals, phono ground, AC power cord.

Input Selection: PHONO, CD, TUNER, AUX, TAPE. Tone Controls: Bass and treble adjustment (±10dB). Loudness: Enhances bass and treble at low volumes. Headphone: 6.3mm stereo output. Speaker Selection: A/B speaker outputs.

Connecting Devices

Audio Sources: PHONO for turntable, CD for CD player, TUNER for tuner, AUX for additional sources.

  1. Turn off amplifier before connecting devices.
  2. Use high-quality RCA cables for audio connections.
  3. Connect turntable ground wire to phono ground terminal.
  4. Select appropriate input on front panel.

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

Operation Guide

Daily operation procedures for optimal performance.

  1. Power on: Switch power button to ON position.
  2. Select source: Rotate input selector to desired source.
  3. Adjust volume: Use volume control to set listening level.
  4. Tone adjustment: Use bass and treble controls as needed.
  5. Loudness: Engage for low-volume listening enhancement.
  6. Headphone use: Insert headphones to mute speaker output.
  7. Power off: Return volume to minimum before turning off.

WARNING! Avoid excessive volume levels that could damage speakers or hearing.

Audio Features

Tone Controls: Independent bass and treble adjustment. Loudness Compensation: Automatic frequency response correction at low volumes. Phono Stage: High-quality moving magnet phono preamplifier. Direct Input: Pure signal path for critical listening.

Care & Maintenance

Unplug before cleaning. Use soft, dry cloth for exterior cleaning. Keep away from moisture and extreme temperatures.

CAUTION! Do not use chemical cleaners; avoid liquid contact with controls and connectors.

Regulatory Information

Complies with applicable safety and EMC standards. Manufactured to Marantz quality standards. For technical support and service, contact authorized Marantz service centers. Copyright © Marantz.

Troubleshooting

SymptomPossible CauseCorrective Action
No soundVolume/mute/speakersCheck volume setting; verify speaker connections; ensure input selected.
Distorted soundOverload/settingsReduce volume; check source level; verify tone control settings.
Hum or noiseGrounding/cablesCheck phono ground; ensure proper cable connections; separate audio and power cables.
One channel silentCables/balanceCheck RCA cables; verify balance control; test with different source.
No phono soundGround/turntableVerify phono ground connection; check turntable settings; ensure PHONO input selected.

Reset: Power cycle amplifier if issues persist.

Service: Contact authorized Marantz service center for technical support.

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