1. Overview
The Bose 251 Environmental Speakers are engineered to deliver high-quality audio in outdoor environments. These speakers feature an Articulated Array design for a wide listening area and a patented multi-chamber bass enclosure for deep, clear bass without audible distortion. Constructed with durable, weather-resistant materials, they are designed to withstand various outdoor conditions, including snow, rain, salt, and extreme temperatures ranging from 140°F (60°C) to -22°F (-30°C).
Figure 1: Front view of two Bose 251 Environmental Speakers.
2. Setup and Installation
2.1 Unboxing and Components
Carefully unpack the speakers and ensure all components are present. The package includes two Bose 251 Environmental Speakers, weather-resistant mounting brackets, and associated hardware.
2.2 Speaker Placement
For optimal sound distribution, place the speakers to cover your desired listening area. The Articulated Array design helps reproduce sound over a larger area. Speakers should be placed at least seven feet apart from each other and at a height that is slightly higher than ear level for the best protection and sound quality. Consider placing them under an overhang for extended longevity.
Figure 2: Bose 251 speakers mounted under a patio overhang for outdoor audio.
Figure 3: A single Bose 251 speaker installed on an exterior wall corner.
2.3 Mounting the Speakers
Use the provided weather-resistant mounting brackets and hardware for secure installation. The brackets allow for easy adjustment of the speaker angle to direct sound towards the listening area. Ensure the mounting surface is sturdy enough to support the speaker's weight.
Figure 4: Side view of the Bose 251 speaker showing the mounting bracket.
2.4 Wiring Connections
The Bose 251 speakers are compatible with amplifiers and receivers rated from 10 to 200 watts per channel. Connect the speaker wires to the positive (red) and negative (black) terminals on the back of each speaker, ensuring correct polarity. Use 16-gauge weatherproof speaker wire for runs up to 50 feet to maintain good contact and prevent moisture ingress.
Figure 5: Rear view of the Bose 251 speaker with wiring terminals visible.
2.5 Installation Video
Video 1: A demonstration of the Bose Outdoor Environmental Speakers, highlighting their features and installation.
Video 2: A detailed look at the Bose 251 Environmental Speakers, showcasing their design and potential applications.
3. Operating the Speakers
Once properly installed and wired to a compatible amplifier or receiver, the Bose 251 Environmental Speakers are ready for use. Control playback and volume through your connected audio source. The speakers are designed to deliver consistent sound quality across a wide range of volume levels.
Figure 6: Bose 251 speakers providing audio in an outdoor patio setting.
4. Maintenance
The Bose 251 Environmental Speakers are built for durability and require minimal maintenance. Their glass-filled polypropylene cabinet and weather-resistant hardware ensure long-term performance in harsh outdoor conditions. Periodically inspect the speaker and mounting hardware for any signs of wear or damage. Clean the speaker grilles and cabinet with a soft, damp cloth as needed to remove dirt or debris.
5. Troubleshooting
- No Sound: Ensure the amplifier/receiver is powered on and the correct input source is selected. Check all speaker wire connections for proper contact and polarity.
- Distorted Sound: Verify that the amplifier's wattage is within the recommended range (10-200 watts per channel). Reduce the volume on the amplifier/receiver and audio source. Check speaker wire connections for any fraying or short circuits.
- Intermittent Sound: Inspect all wiring for loose connections or damage. Ensure the audio source is stable.
- Poor Bass Response: Confirm proper speaker placement and ensure the multi-chamber bass enclosure is not obstructed.
6. Specifications
| Feature | Detail |
|---|---|
| Model Name | 251 Environmental Speakers |
| Brand | Bose |
| Product Dimensions | 8"D x 5.75"W x 13.5"H |
| Item Weight | 20.3 Pounds |
| Color | White |
| Material | Metallic Plastic |
| Speaker Type | Outdoor |
| Special Feature | Waterproof |
| Recommended Uses | For Indoor Use, For Outdoor Use |
| Compatible Devices | Desktop, Laptop, MP3 Player, Projector, Smartphone, Tablet, Television |
| Impedance | 8 Ohms |
| Speaker Maximum Output Power | 50 Watts |
| Frequency Response | 100 Hz |
| Connectivity Technology | Wired |
| Control Method | App |
| Wireless Communication Technology | Wi-Fi |
Figure 7: Dimensions of the Bose 251 Environmental Speaker.
7. Warranty and Support
The Bose 251 Environmental Speakers come with a 5-year transferable limited warranty. For detailed warranty terms and conditions, please refer to the documentation included with your product or visit the official Bose support website.
