marantz 27 manual

The Marantz 27 is a high-performance stereo receiver featuring advanced audio processing, multiple input/output options, and sophisticated tuning capabilities. This manual covers the comprehensive operation, setup, and maintenance of your Marantz 27 stereo receiver, including detailed instructions for optimal audio performance and connectivity.

Features at a Glance

Key components: High-power amplifier section, precision tuner, multiple input selection, tone controls, and speaker outputs.

Feature	Description
Power Output	High-fidelity stereo amplification
Tuner Section	AM/FM stereo reception with precision tuning
Input Selection	Multiple source inputs (Phono, Aux, Tape)
Tone Controls	Bass and treble adjustment
Speaker Outputs	Multiple speaker connections
Headphone Jack	For private listening
Loudness Control	Enhanced bass at low volumes
Balance Control	Left/right channel balance adjustment
Power Switch	Main power on/off control
Volume Control	Master volume adjustment

Installation

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

1. Connect speakers: Use speaker wire to connect left and right speakers to appropriate terminals.
2. Connect audio sources: Use RCA cables for Phono, Aux, and Tape inputs.
3. Connect antenna: Attach FM antenna for radio reception.
4. Plug into AC power outlet.

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

First-Time Setup

Power on receiver; initialize settings for optimal performance.

1. Set input selector to desired source (Phono, Aux, Tape).
2. Adjust volume to minimum before playing audio.
3. Tune FM stations using tuning dial and stereo indicator.
4. Set tone controls to neutral position for initial listening.

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

Specifications

• Power Output: High-power stereo amplification
• Tuner Section: AM/FM stereo reception
• Frequency Response: 20Hz-20kHz
• Inputs: Phono, Aux, Tape play
• Outputs: Tape record, speakers, headphones
• Tone Controls: Bass and treble adjustment
• Power Requirements: 120V AC, 60Hz
• Dimensions: Standard component size

Controls and Settings

Front panel controls: Power switch, input selector, volume, balance, tone controls, tuning dial.

Main Controls: Power, Input Selector, Volume, Balance, Bass, Treble, Loudness, Tuning.

Input Selection: Phono, Aux, Tape. Tone Controls: Bass (±10dB), Treble (±10dB). Tuner: AM/FM selection, tuning meter, stereo indicator. Special Features: Loudness compensation, tape monitoring.

Connecting Devices

Phono: Turntable connection. Aux: CD player, tuner. Tape: Tape deck input/output.

1. Turn off power before making connections.
2. Use quality RCA cables for all connections.
3. Match ground wires for phono input.
4. Select appropriate input source on front panel.

Tip: Keep audio cables away from power cords to reduce interference.

Audio Settings

Optimize sound quality with proper tone control settings.

1. Bass Control: Adjust low frequency response.
2. Treble Control: Adjust high frequency response.
3. Loudness: Enhance bass at low volume levels.
4. Balance: Adjust left/right channel balance.
5. Volume: Master output level control.

WARNING! Avoid extreme tone control settings that may cause distortion.

Tuner Operation

AM/FM stereo tuning with precision tuning meter.

1. Select AM or FM band.
2. Rotate tuning dial to desired frequency.
3. Watch tuning meter for strongest signal.
4. Stereo indicator lights when receiving stereo broadcast.
5. Fine-tune for optimal reception.

Note: Proper antenna positioning improves reception quality.

Care & Maintenance

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

CAUTION! Never use liquid cleaners or sprays. Unplug unit before cleaning.

Regulatory Information

FCC compliant for home 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	Input selection/volume	Check input selector; adjust volume; verify speaker connections.
Distorted sound	Overload/tone settings	Reduce volume; adjust tone controls to neutral.
Poor FM reception	Antenna placement	Reposition FM antenna; check connections.
Hum or noise	Grounding/cables	Check ground connections; replace damaged cables.
One channel silent	Balance/speaker	Adjust balance control; check speaker wire connections.

Service: Contact authorized Marantz service center for repairs.