Marantz 1180DC Owners Manual

The Marantz 1180DC is a high-performance stereo receiver featuring Dolby noise reduction, DC power amplifier design, dual power supply, and advanced tuning capabilities. With 80 watts per channel, multiple input/output options, and professional-grade audio controls, this receiver delivers exceptional sound quality for audiophiles and music enthusiasts. Below are key sections covering features, installation, operation, specifications, and maintenance.

Features at a Glance

Key components: DC power amplifier, Dolby noise reduction system, precision tuning meter, multiple input/output terminals, and professional audio controls.

Installation

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

1. Connect speakers: Use speaker terminals for A/B speaker systems.
2. Connect audio sources: Use appropriate input jacks (Phono, Aux, Tape).
3. Connect antenna: Attach FM/AM antenna to respective terminals.
4. Plug into AC power outlet.

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

First-Time Setup

Power on receiver; initialize system settings.

1. Speaker selection: Choose A/B speakers using front panel controls.
2. Input selection: Select appropriate source (Phono, Tuner, Aux).
3. Tuning setup: Auto-scan or manual tune FM/AM stations.
4. Audio adjustment: Set bass, treble, and balance to preference.

CAUTION! Allow warm-up time for optimal performance. Keep away from moisture.

Specifications

• Power Output: 80W + 80W (8Ω, 20Hz-20kHz)
• Total Harmonic Distortion: 0.02%
• Frequency Response: 5Hz-50kHz (+0 -3dB)
• Input Sensitivity: Phono: 2.5mV, Aux: 150mV
• Signal-to-Noise Ratio: Phono: 76dB, Aux: 100dB
• Tone Controls: Bass: ±10dB, Treble: ±10dB
• Damping Factor: 60
• Power Consumption: 280W
• Dimensions: 440 x 150 x 370mm
• Weight: 13.5kg

Controls and Settings

Front Panel: Power switch, Input selector, Volume, Balance, Tone controls, Tuning knob, Speaker selectors.

Advanced Controls: Loudness contour, High/Low filters, Muting, Dolby NR, Tape monitor.

Tone Controls: Bass (±10dB at 100Hz), Treble (±10dB at 10kHz). Filter Controls: High filter (cuts above 7kHz), Low filter (cuts below 70Hz). Tuning: Manual/auto tuning, Preset memory (8 stations).

Connecting Devices

Multiple input options: Phono, Aux, Tape 1, Tape 2, Tuner.

1. Turn off power before making connections.
2. Phono: Connect turntable to Phono inputs (ground wire to terminal).
3. Aux: Connect CD player, tape deck, or other line-level sources.
4. Tape: Connect tape decks for recording/playback.
5. Speakers: Connect to A/B terminals observing polarity.

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

Audio Controls

Comprehensive audio adjustment capabilities.

1. Volume: Master volume control.
2. Balance: Left/right channel balance.
3. Bass/Treble: Adjust low and high frequencies.
4. Loudness: Compensates for low-volume listening.
5. Filters: Reduce high-frequency hiss or low-frequency rumble.
6. Muting: Temporary volume reduction.
7. Dolby NR: Engage for tape playback with Dolby encoding.

WARNING! Avoid extreme tone control settings to prevent distortion.

Tuning Features

Advanced FM/AM tuning with memory presets.

1. FM Tuning: Auto-scan or manual tuning with signal strength meter.
2. AM Tuning: Standard AM band reception.
3. Preset Memory: Store up to 8 stations (4 FM, 4 AM).
4. Muting: Automatic muting between stations.
5. Stereo Indicator: Shows when receiving stereo FM broadcasts.

Care & Maintenance

Unplug before cleaning. Use soft, dry cloth for exterior. Clean controls with appropriate contact cleaner.

CAUTION! Do not use solvents or abrasive cleaners. Keep ventilation openings clear.

Regulatory Information

FCC compliant for home audio equipment. Manufactured to meet international safety standards. Copyright © Marantz. For technical support and service, contact authorized Marantz service centers.

Troubleshooting

Reset: Power cycle unit if experiencing issues.

Service: Contact authorized Marantz service center for repairs.