Bose Model 20 Music Center Manual

The Bose Model 20 Music Center is a high-fidelity audio system designed for exceptional sound reproduction. It features an integrated amplifier, AM/FM tuner, and connectivity for various audio sources. The system includes advanced acoustic technologies, tone controls, speaker outputs, auxiliary inputs, and a remote control. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

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

Features at a Glance

Key components: Integrated amplifier, AM/FM tuner, Remote Control, Speaker terminals, Auxiliary input jacks, Headphone jack.

Feature	Description
AM/FM Tuner	For radio reception with preset memory
Auxiliary Input	For connecting external audio devices (CD player, phone, etc.)
Speaker Terminals	For connecting external speakers
Headphone Jack	For private audio listening
AC Power Input	For power connection
Tone Controls	Bass and treble adjustment
POWER	Turns system on/off
VOLUME	Adjusts audio output level
MUTE	Mutes sound instantly
INPUT SELECT	Switches between Tuner and Auxiliary input

Installation

Unpack and inspect contents. Place on stable, level surface away from heat sources.

Connect Speakers: Attach speaker wires to correct terminals (positive/negative).
Connect Antenna: Attach supplied AM loop and FM wire antennas.
Connect Audio Source: Use RCA cables to connect a device to the AUX input.
Plug into AC power outlet.

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

First-Time Setup

Power on the Music Center; follow initial setup steps.

Set Clock: Use the SETUP menu to set the current time.
Tune Radio: Press TUNER, then use manual or auto-scan to find stations.
Save Presets: Store favorite stations in memory (typically 1-10).
Adjust Tone: Use BASS and TREBLE controls to suit your preference.

CAUTION! Place on a stable surface; keep away from moisture.

Specifications

Amplifier Power: 20 Watts per channel (into 8 ohms).
Tuner: AM/FM with 10 station presets.
Frequency Response: 20Hz - 20kHz.
Inputs: Auxiliary (RCA), AM/FM antenna terminals.
Outputs: Speaker terminals, Headphone jack (3.5mm).
Tone Controls: Bass (±10dB), Treble (±10dB).
Power Source: 120V AC, 60Hz.
Dimensions: Standard component width.

Controls and Settings

Front Panel: POWER, VOLUME, INPUT SELECT, TUNER/PRESET buttons, BASS, TREBLE.

Remote: POWER, Numeric buttons (presets), VOLUME UP/DOWN, MUTE, INPUT SELECT, TUNER MODE.

Tone: Adjust BASS and TREBLE knobs. Tuner: Manual tuning or auto-scan; save presets. Setup: Clock setting, display brightness. Audio: Direct source or tone-adjusted playback.

Connecting Audio Sources

Auxiliary Input: For CD players, smartphones, tablets, etc.

Turn off Music Center before connecting.
Use RCA audio cables (red/white) from device output to AUX input.
Select input via INPUT SELECT (AUX position).

Tip: For best sound quality, use high-quality audio cables.

Tuner Operation

Supports AM and FM radio reception.

Select Tuner: Press INPUT SELECT until TUNER is active.
Tune Station: Use TUNE UP/DOWN buttons or auto-scan.
Save Preset: Hold a number button (1-10) to store current station.
Recall Preset: Press corresponding number button.
Mono/Stereo: FM stations automatically switch; use MONO for weak signals.

WARNING! Ensure antennas are properly connected and positioned for best reception.

Advanced Features

Sleep Timer: Set unit to turn off after 15-90 minutes. Headphone Output: Automatically mutes speakers when headphones are plugged in.

Care & Maintenance

Unplug before cleaning. Use soft, dry cloth; avoid abrasive cleaners.

CAUTION! Do not use liquid cleaners; keep away from extreme temperatures.

Regulatory Information

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power cord/outlet	Check power connection; try different outlet.
No sound from speakers	Volume/mute/connections	Check volume level; ensure mute is off; verify speaker connections.
Poor radio reception	Antenna placement	Reposition antennas; extend FM wire fully.
Remote not working	Batteries/obstructions	Replace batteries; ensure clear path to IR sensor.
Distorted sound	Source/volume level	Check audio source; reduce volume; ensure proper speaker impedance.

Reset: Unplug unit for 60 seconds, then reconnect power.

Service: Contact Bose customer support or authorized service center.