Marantz 1150D Owners Manual

The Marantz 1150D is a high-performance stereo receiver featuring advanced audio processing, multiple input/output options, and professional-grade amplification. This manual covers setup, operation, and maintenance of your Marantz 1150D receiver, including detailed instructions for optimal audio performance and connectivity with various audio sources.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Audio Settings 8. Advanced Features 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: High-power amplifier section, multiple audio inputs, remote control, speaker terminals, headphone jack, and advanced tone controls.

Feature	Description
Power Output	75 watts per channel into 8 ohms
Inputs	Phono, CD, Tuner, Aux, Tape
Outputs	Speaker A/B, Tape Out, Headphone
Tone Controls	Bass, Treble, Loudness
Filter	High and Low filters
Power Supply	AC 120V, 60Hz
Remote Control	Infrared remote included
Speaker Selector	A/B speaker switching
Headphone Jack	6.3mm stereo jack
Protection Circuit	Overload and thermal protection

Installation

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

Connect speakers: Use speaker wire to connect speakers to appropriate terminals.
Connect audio sources: Use RCA cables to connect turntable, CD player, or other sources.
Connect antenna: For FM/AM reception, connect appropriate antenna.
Plug into AC power outlet.

WARNING! Ensure proper ventilation around unit. Do not block ventilation openings.

First-Time Setup

Power on receiver; verify all connections are secure.

Select input source: Rotate input selector to desired source (Phono, CD, etc.).
Adjust volume: Start with volume at minimum, gradually increase to desired level.
Set tone controls: Adjust bass and treble to personal preference.
Speaker selection: Choose A, B, or A+B speaker outputs.

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

Specifications

Power Output: 75W + 75W (8Ω, 20Hz-20kHz)
Total Harmonic Distortion: 0.02%
Frequency Response: 5Hz-50kHz (+0, -3dB)
Input Sensitivity: Phono: 2.5mV, CD/Aux: 150mV
Signal-to-Noise Ratio: Phono: 76dB, CD/Aux: 100dB
Tone Control Range: Bass: ±10dB at 100Hz, Treble: ±10dB at 10kHz
Power Consumption: 280W maximum
Dimensions: 17-5/16" W × 5-7/8" H × 14-1/8" D
Weight: 26.5 lbs (12 kg)

Controls and Settings

Front Panel: Power switch, input selector, volume control, tone controls, balance, speaker selector, headphone jack.

Remote Control: Power, volume up/down, input selection, mute.

Tone Controls: Bass and treble adjustment with defeat switch. Filters: High and low cut filters for noise reduction. Loudness: Compensation for low-volume listening. Balance: Left/right channel balance adjustment.

Connecting Devices

Audio Inputs: Phono, CD, Tuner, Aux, Tape. Outputs: Speaker terminals, tape out, headphone.

Turn off power before making connections.
Match cable colors (red/white) to appropriate jacks.
Ensure secure connections; avoid loose cables.
For phono input, use proper ground connection.

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

Audio Settings

Optimal audio adjustment for various listening environments.

Bass Control: Adjust low frequencies (20Hz-500Hz).
Treble Control: Adjust high frequencies (2kHz-20kHz).
Loudness: Enhances bass at low volume levels.
Balance: Adjust left/right channel balance.
Filters: High filter reduces hiss; low filter reduces rumble.

Note: Use tone defeat for pure, unaltered signal when critical listening.

Advanced Features

Speaker A/B Selection: Operate two pairs of speakers independently or simultaneously. Tape Monitoring: Record and monitor tape decks simultaneously. Phono Stage: Built-in phono preamp for turntable connection.

Care & Maintenance

Unplug before cleaning. Use soft, dry cloth for exterior. Avoid chemical cleaners.

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

Regulatory Information

Troubleshooting

Symptom	Possible Cause	Corrective Action
No sound from speakers	Speaker wires/selector	Check speaker connections; verify speaker selector position.
Distorted sound	Overload/settings	Reduce volume; check input levels; verify tone settings.
Hum or noise	Grounding/cables	Check ground connections; ensure proper cable routing.
Remote not working	Batteries/obstructions	Replace batteries; ensure clear path to IR sensor.
Protection circuit activated	Overload/short circuit	Turn off, check speaker wires for shorts, wait 5 minutes.

Reset: Turn unit off and unplug for 30 seconds to reset protection circuits.

Service: 1-800-288-2284; www.marantz.com