Marantz PM 94 Manual

The Marantz PM 94 is a high-end integrated amplifier featuring advanced audio technology, dual mono construction, high-current power supply, gold-plated connectors, MM/MC phono stage, tone controls, headphone output, and remote control capability. With power output of 2x100W at 8Ω, frequency response 5Hz-100kHz, and THD less than 0.005%, it delivers exceptional audio performance for audiophile systems. Below are key sections for features, installation, operation, specifications, and maintenance.

Features at a Glance

Key components: Dual mono construction, toroidal transformer, gold-plated RCA inputs, phono stage, tone controls, headphone output, remote sensor.

Feature	Description
Power Output	2x100W at 8Ω, 2x150W at 4Ω
Inputs	Phono (MM/MC), CD, Tuner, Aux, Tape 1, Tape 2
Outputs	Speaker A/B, Pre-out, Headphone
Frequency Response	5Hz-100kHz (+0/-3dB)
THD	<0.005% at rated power
Signal-to-Noise	100dB (line), 80dB (phono MM)
Tone Controls	Bass ±10dB, Treble ±10dB
Power Supply	Toroidal transformer with separate windings
Construction	Dual mono, copper-plated chassis
Remote Control	Included for basic functions

Installation

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

1. Connect speakers: Use high-quality speaker cable to Speaker A/B terminals.
2. Connect audio sources: Use gold-plated RCA cables to appropriate inputs (CD, Phono, etc.).
3. Connect turntable: Use Phono input for MM/MC cartridges with ground wire.
4. Plug into AC power outlet (120V, 60Hz).

WARNING! Amplifier generates heat; ensure minimum 4 inches clearance on all sides. Use proper gauge speaker wire.

First-Time Setup

Power on amplifier; allow 30 seconds for stabilization.

1. Select input: Turn INPUT selector to desired source (CD, Phono, etc.).
2. Adjust volume: Start at minimum, gradually increase to desired level.
3. Set phono stage: Use rear switch for MM/MC cartridge type.
4. Speaker selection: Press A/B buttons for desired speaker outputs.
5. Tone controls: Set to flat position (12 o'clock) initially.

CAUTION! Do not connect/disconnect speakers while amplifier is powered on. Always power off before changing connections.

Specifications

• Power Output: 100W + 100W (8Ω), 150W + 150W (4Ω)
• Frequency Response: 5Hz-100kHz (+0/-3dB)
• Total Harmonic Distortion: <0.005% (20Hz-20kHz at rated power)
• Input Sensitivity: Phono MM 2.5mV, Phono MC 0.25mV, Line 150mV
• Input Impedance: Phono MM 47kΩ, Phono MC 100Ω
• Damping Factor: 200 (8Ω, 1kHz)
• Speaker Impedance: 4-16Ω
• Power Consumption: 350W maximum
• Dimensions: 440 x 150 x 400mm (W x H x D)
• Weight: 18kg

Controls and Settings

Front Panel: Power switch, Input selector, Volume control, Balance, Tone controls (Bass/Treble), Speaker A/B, Headphone jack, Tape monitor.

Rear Panel: AC input, Phono MM/MC switch, Input connectors, Speaker terminals, Pre-out, Ground terminal.

Input Selection: CD, Phono, Tuner, Aux, Tape 1, Tape 2. Tone Controls: Bass ±10dB at 100Hz, Treble ±10dB at 10kHz. Balance: Left/Right channel adjustment. Speaker Selection: A, B, A+B outputs. Tape Monitor: For recording and monitoring.

Connecting Devices

Audio Sources: CD player, turntable, tuner, tape deck, auxiliary devices.

1. Turn off amplifier before making connections.
2. Use high-quality interconnects for best performance.
3. Connect turntable ground wire to ground terminal.
4. Match input type to source device (Phono for turntable, etc.).
5. For bi-wiring, use both Speaker A and B outputs.

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

Operation Modes

Supports multiple input sources and output configurations.

1. Source Selection: Rotate INPUT selector to desired source.
2. Volume Control: Adjust to comfortable listening level.
3. Speaker Output: Select A, B, or A+B for multiple speaker sets.
4. Tape Monitoring: Press TAPE MONITOR for recording functions.
5. Headphone Use: Plug headphones into front panel jack (disables speakers).
6. Remote Control: Basic volume and mute functions.

WARNING! Do not operate without proper ventilation. Allow warm-up time for optimal performance.

Audio Adjustments

Tone Controls: Bass adjustment affects low frequencies, Treble affects high frequencies. Balance: Corrects left/right channel imbalance. Phono Stage: MM for moving magnet, MC for moving coil cartridges.

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 and extreme temperatures.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits. CE certified for European markets. Copyright © Marantz. For support, contact authorized Marantz service centers or visit www.marantz.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No sound	Input selection/volume	Check input selection; increase volume; verify speaker connections.
Distorted sound	Overload/speakers	Reduce volume; check speaker impedance compatibility.
Hum/buzz	Grounding/cables	Ensure proper grounding; check cable connections; separate from power cords.
One channel silent	Balance/connections	Adjust balance control; check RCA cables and speaker connections.
Remote not working	Batteries/obstacles	Replace batteries; ensure clear path to sensor; check range.

Service: Contact authorized Marantz service center. Do not attempt internal repairs.

Support: www.marantz.com or contact local distributor