Bose 123 Series III Manual

The Bose 123 Series III is a high-performance environmental speaker system designed for professional audio applications. Featuring weather-resistant construction, wide dispersion characteristics, and optimized frequency response, it is suitable for both indoor and outdoor installations. 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 Devices 7. Operation Guidelines 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Weather-resistant enclosure, wide-dispersion driver array, integrated mounting hardware, and professional-grade connectors.

Feature	Description
Weather-resistant construction	Designed for indoor/outdoor use with protective coating
Wide dispersion driver	Provides consistent coverage across listening area
Integrated mounting points	For secure installation on walls, ceilings, or poles
Professional connectors	Speakon or terminal block inputs for reliable connection
Optimized frequency response	Tailored for voice and music reproduction
Power handling	High power capacity for demanding applications
Impedance	8 ohms nominal for amplifier compatibility
Dispersion pattern	120° horizontal x 90° vertical coverage
Protective grille	Metal grille with weather-resistant finish
Installation flexibility	Multiple orientation options for varied applications

Installation

Unpack and inspect contents. Ensure proper mounting location and hardware.

Select mounting location: Choose stable surface with appropriate clearance.
Prepare mounting hardware: Use included brackets and fasteners.
Mount speaker: Secure using appropriate hardware for surface type.
Connect audio cables: Route cables to amplifier using proper gauge wire.
Secure connections: Ensure all connections are tight and weather-protected if outdoors.

WARNING! Speaker is heavy; use proper lifting techniques. Ensure mounting surface can support weight.

First-Time Setup

After installation, configure system for optimal performance.

Verify connections: Ensure all audio cables are properly connected to amplifier.
Set amplifier levels: Start with low volume and gradually increase to desired level.
Test speaker operation: Play audio source to confirm proper function.
Adjust orientation: Position speaker for optimal coverage of listening area.
Secure all hardware: Double-check all mounting hardware is tight.

CAUTION! Do not exceed recommended power ratings. Use appropriate amplifier matching.

Specifications

Model: Bose 123 Series III Environmental Speaker
Frequency Response: 75Hz - 16kHz (±3dB)
Power Handling: 100W continuous, 400W peak
Impedance: 8 ohms nominal
Sensitivity: 91dB SPL (1W/1m)
Dispersion: 120°H x 90°V
Maximum SPL: 118dB peak
Connectors: Speakon NL4 and terminal block
Enclosure: UV-resistant polypropylene with aluminum grille
Dimensions: 12.5" x 9.5" x 8.75" (HxWxD)
Weight: 12.5 lbs (5.7 kg)
Operating Temperature: -40°F to 140°F (-40°C to 60°C)

Controls and Settings

No user controls on speaker itself. All adjustments made at amplifier or system controller.

Amplifier Settings: Gain/level control, crossover settings if used with subwoofer, equalization.

System Configuration: Volume zoning, source selection, timing alignment if part of larger system.

Protection Features: Built-in thermal protection, overload protection.

Connecting Devices

Connect to amplifier or system controller using appropriate cables.

Turn off amplifier before making connections.
Use proper gauge speaker wire for run length.
Connect to amplifier outputs matching impedance requirements.
For Speakon connectors: Ensure proper polarity (1+/1- for full range).
For terminal blocks: Secure wires tightly, avoid stray strands.

Tip: Use weatherproof connectors for outdoor installations.

Operation Guidelines

Designed for continuous operation in various environments.

Power sequence: Turn on amplifier last, turn off first.
Volume management: Avoid sudden extreme volume changes.
Environmental monitoring: Check for debris or obstruction of grille.
Regular testing: Periodically test all speakers in system.
Seasonal checks: Inspect mounting hardware and connections seasonally.

WARNING! Do not modify speaker components. Use only Bose-approved accessories.

Accessibility Features

Designed for universal installation. Consult with audio professional for specific accessibility requirements in public spaces.

Care & Cleaning

Regular maintenance ensures long-term performance.

Exterior cleaning: Use mild soap and water with soft cloth.
Grille cleaning: Remove dust with soft brush or compressed air.
Connection inspection: Check for corrosion, especially in outdoor installations.
Mounting hardware: Tighten if necessary, check for rust.

CAUTION! Do not use abrasive cleaners or high-pressure water. Do not open enclosure.

Regulatory Information

Complies with applicable safety and EMC regulations. FCC Part 15 Class B compliant. CE marked for European compliance. Copyright © Bose Corporation. All rights reserved. Bose and the Bose logo are trademarks of Bose Corporation. For support, visit www.bose.com or contact Bose Professional support.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No sound	Connection issues, amplifier off	Check all connections, verify amplifier power and settings
Distorted sound	Overdriven amplifier, damaged speaker	Reduce amplifier gain, check for physical damage
Intermittent sound	Loose connections, damaged cable	Secure all connections, replace damaged cables
Reduced output	Impedance mismatch, amplifier issue	Verify impedance matching, test with known good amplifier
Physical damage	Impact, environmental exposure	Inspect for cracks, water intrusion; contact Bose support

Service: Contact Bose Professional Support for service inquiries. Do not attempt to repair internally.

Warranty: Refer to original purchase documentation for warranty terms and conditions.