Marantz PM-80 MKII Manual

The Marantz PM-80 MKII is a high-performance integrated stereo amplifier featuring Class A/AB operation, dual power supplies, MM/MC phono stage, tone controls, loudness compensation, and multiple input/output options. With 100W per channel (8Ω), gold-plated connectors, and advanced circuitry, it delivers exceptional audio quality for audiophile 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 Modes 8. Maintenance 9. Regulatory Information 10. Troubleshooting

Features at a Glance

Key components: Class A/AB operation switch, dual mono construction, gold-plated RCA inputs, MM/MC phono stage, tone defeat, loudness control.

Feature	Description
Power Output	100W per channel (8Ω), 150W per channel (4Ω)
Operation Modes	Class A (25W) / Class AB (100W) switchable
Phono Stage	MM (47kΩ) and MC (100Ω) inputs
Inputs	Phono, CD, Tuner, Aux, Tape 1, Tape 2
Outputs	Speaker A/B, Pre Out, Tape Out
Tone Controls	Bass ±10dB, Treble ±10dB
Loudness	Compensation for low-volume listening
Power Supply	Dual mono toroidal transformers
Dimensions	440mm W × 150mm H × 410mm D
Weight	15.5 kg

Installation

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

Connect speakers: Use high-quality speaker cables to Speaker A/B terminals.
Connect source components: Use RCA cables to appropriate inputs (Phono, CD, etc.).
Connect power cord: Plug into appropriate AC outlet (220-240V or 110-120V).
Ensure proper ventilation: Leave minimum 10cm clearance on all sides.

WARNING! Amplifier is heavy; lift with care using both hands. Ensure proper grounding.

First-Time Setup

Power on amplifier; allow 30 minutes warm-up for optimal performance.

Select operation mode: Choose Class A for critical listening or Class AB for higher power.
Set input selector: Rotate to desired source (Phono, CD, Tuner, etc.).
Adjust volume: Start from minimum position, gradually increase.
Configure tone controls: Set to flat position initially, adjust to preference.
Speaker selection: Choose Speaker A, B, or A+B as required.

CAUTION! Do not operate without proper load. Keep away from moisture.

Specifications

Power Output: 100W + 100W (8Ω), 150W + 150W (4Ω)
Frequency Response: 5Hz - 100kHz (+0/-3dB)
Total Harmonic Distortion: 0.005% (1kHz, 8Ω)
Signal-to-Noise Ratio: 100dB (Line), 80dB (Phono MM)
Input Sensitivity: 2.5mV (MC), 0.25mV (MM), 150mV (Line)
Damping Factor: 100 (8Ω, 1kHz)
Power Consumption: 450W (max), 85W (idle)
Operating Voltage: 110-120V/220-240V AC, 50/60Hz

Controls and Settings

Front Panel: Power switch, Input selector, Volume, Balance, Tone controls, Loudness, Mode selector, Speaker switches.

Rear Panel: Gold-plated RCA inputs, Speaker terminals, Pre Out, AC inlet, Voltage selector.

Input Selection: Phono, CD, Tuner, Aux, Tape 1, Tape 2. Tone Controls: Bass ±10dB at 100Hz, Treble ±10dB at 10kHz. Operation Modes: Class A (pure Class A operation), Class AB (high-power mode). Speaker Selection: A, B, or A+B outputs.

Connecting Devices

Sources: Phono (turntable), CD player, Tuner, Tape deck, Auxiliary devices.

Turn off amplifier before connecting devices.
Use high-quality interconnects for best performance.
Match phono cartridge type to MM/MC input.
Connect speakers observing correct polarity (+/-).
Select appropriate input source on front panel.

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

Operation Modes

Class A/AB operation and tone control options.

Class A Mode: Select for critical listening, lower power (25W), higher fidelity.
Class AB Mode: Select for higher power output (100W), full dynamic range.
Tone Controls: Adjust bass and treble to suit room acoustics and program material.
Loudness Compensation: Engage for balanced sound at low volume levels.
Tone Defeat: Bypass tone controls for pure direct signal path.
Balance Control: Adjust left/right channel balance if needed.
Speaker Selection: Switch between Speaker A, B, or both outputs.

WARNING! Allow amplifier to cool between mode changes. Do not switch under load.

Maintenance

Regular cleaning and inspection for optimal performance.

Cleaning: Use soft, dry cloth for exterior. Do not use chemicals.
Ventilation: Ensure adequate airflow around amplifier.
Connections: Periodically check and clean connectors.
Fuses: Replace only with specified rating if required.

CAUTION! Unplug before cleaning. Internal service by qualified personnel only.

Regulatory Information

CE compliant: Meets European safety and EMC standards. RoHS compliant: Free of hazardous substances. Manufactured under ISO 9001 quality standards. Copyright © Marantz. For support, contact authorized Marantz service centers or visit www.marantz.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No sound	Speaker connections/power	Check speaker wires; ensure power on; verify input selection.
Distorted sound	Overload/connections	Reduce volume; check source quality; verify proper connections.
Hum or noise	Grounding/cables	Check ground connections; separate signal and power cables.
One channel silent	Balance/connections	Adjust balance control; check interconnects and speaker connections.
Overheating	Ventilation/load	Ensure adequate ventilation; check speaker impedance matching.

Reset: Power cycle amplifier if abnormal operation occurs.

Service: Contact authorized Marantz service center for internal repairs.