Marantz 4100 Manual

The Marantz 4100 is a professional audio/video switching amplifier with quadraphonic capabilities, featuring multiple input/output configurations, tone controls, balance adjustments, and advanced switching options. Designed for high-fidelity audio performance with robust construction and versatile connectivity options for various audio sources and speaker systems.

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: Quadraphonic amplifier, multiple input selector, tone controls, balance controls, speaker selector, headphone jack, and various input/output terminals.

Feature	Description
Power Output	40 watts per channel (4 channels)
Input Selector	Multiple source selection (Phono, Aux, Tuner, Tape)
Tone Controls	Bass and treble adjustment for each channel
Balance Controls	Front/Rear and Left/Right balance adjustment
Speaker Selector	Multiple speaker system selection
Headphone Jack	For private listening
Mode Selector	Stereo/Quadraphonic mode switching
Loudness Control	Compensates for low-volume listening
Power Switch	Main power on/off control
Volume Control	Master volume adjustment

Installation

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

Connect speakers: Use appropriate speaker wire to connect front and rear speakers.
Connect audio sources: Use RCA cables for turntable, tuner, tape deck, and auxiliary inputs.
Connect power: Plug into appropriate AC power outlet.
Verify connections: Ensure all connections are secure and proper polarity maintained.

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

First-Time Setup

Power on amplifier; verify proper operation.

Set input selector: Choose appropriate source (Phono, Aux, Tuner, Tape).
Adjust volume: Start with low volume and gradually increase.
Set mode: Select stereo or quadraphonic operation as desired.
Balance adjustment: Adjust front/rear and left/right balance controls.
Tone adjustment: Set bass and treble to preference.

CAUTION! Avoid turning volume to maximum initially to prevent speaker damage.

Specifications

Power Output: 40W RMS per channel (4 channels)
Total Harmonic Distortion: Less than 0.5% at rated power
Frequency Response: 20Hz - 20kHz ±1dB
Input Sensitivity: Phono: 2.5mV, Aux/Tuner: 150mV
Signal-to-Noise Ratio: Better than 70dB
Inputs: Phono, Aux, Tuner, Tape (play/record)
Outputs: Speaker terminals, tape record, headphones
Tone Controls: Bass ±10dB, Treble ±10dB
Power Requirements: 120V AC, 60Hz
Dimensions: Standard component width

Controls and Settings

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

Input Selector: Phono, Aux, Tuner, Tape. Mode Selector: Stereo, Quadraphonic. Tone Controls: Independent bass and treble adjustment. Balance Controls: Front/Rear and Left/Right balance. Loudness: Compensates for Fletcher-Munson curves.

Connecting Devices

Audio Sources: Phono, Tuner, Tape, Auxiliary inputs. Speakers: Front and rear speaker outputs.

Turn off power before making connections.
Connect turntable to Phono input (use proper ground connection).
Connect tuner to Tuner input.
Connect tape deck to Tape play/record jacks.
Connect auxiliary devices to Aux input.
Connect speakers observing proper polarity.

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

Operation Modes

Supports stereo and quadraphonic operation.

Stereo Mode: Standard two-channel operation
Quadraphonic Mode: Four-channel surround sound
Source Selection: Rotate input selector to desired source
Tape Monitoring: Use tape monitor for recording/playback
Headphone Operation: Automatically mutes speakers when headphones connected

WARNING! Do not operate without proper load on amplifier outputs.

Maintenance

Keep unit clean and dust-free. Use soft, dry cloth for cleaning.

CAUTION! Unplug unit before cleaning. Do not use liquid cleaners or aerosols.

Regulatory Information

FCC compliant for residential use. Manufactured to meet industry standards for audio equipment. Copyright and trademarks owned by Marantz. For technical support, contact authorized Marantz service centers.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No sound	Power/speaker connections	Check power connection; verify speaker wires; check input selection
Distorted sound	Overload/connections	Reduce volume; check source levels; verify proper connections
Intermittent operation	Loose connections	Check all cable connections; inspect speaker wires
Hum or noise	Grounding/cables	Verify proper grounding; use shielded cables; check phono ground
One channel silent	Balance/connections	Check balance controls; verify channel connections; test source

Service: Contact authorized Marantz service center for internal repairs.