Bose 251 Environmental Speakers Review 2024 - Speakers Reviewed

Bose 251 Environmental Speakers Review

When it comes to outdoor audio solutions that blend superior performance with durability, the name Bose has long been synonymous with excellence. The Bose 251 Environmental Speakers stand as a testament to this legacy, offering an unparalleled listening experience that elevates any outdoor setting. In this review, we delve into the remarkable features and performance of the Bose 251 speakers, showcasing why they have become a go-to choice for outdoor audio enthusiasts.

Our list of the top patio outdoor speakers also includes the Bose 251.

Bose 251 Specs

Sold as:Pair
Power Handling:10W – 100W @ 6 ohms
Dimensions:13.5″ x 5.75″ x 8.0″
Weight:8 lbs
Speaker Drivers:5¼” low-frequency driver + 2 x 2½” tweeters

Design and Sound

Each 251 Environmental speaker has two 2 1/2″ Bose TwiddlerTM and a 5 1/4″ low-frequency driver. For their most recent line of indoor and outdoor speakers, Bose specifically designed the Twiddler high/mid driver. In what Bose refers to as an “Articulated Array,” these Twiddlers are mounted 45 degrees to the left and right of the centre. The 251 Environmental receives a much-needed wider dispersion for outdoor use from the Articulated Array. This indicates that a larger area, such as your backyard, is covered by the “sweet spot” for the 251 Environmental.

Bose is renowned for its commitment to audio excellence, and the Bose 251 Environmental Speakers are no exception. Equipped with advanced speaker technology, these units offer a balanced sound profile with rich bass, clear mids, and crisp highs. Whether you’re hosting a backyard barbecue or simply enjoying a relaxing afternoon, these speakers provide an immersive sonic experience that complements the beauty of the outdoors.

Power and Amplification

The 251 Environmental has a power handling range of 10 to 100W at 6 ohms, but the speakers can also be driven by amplifiers operating at 4 to 8 ohms. For more information, be sure to consult the user manual or get in touch with Bose. Try to pair your 251 Environmental speakers with an amplifier that has a power output as close to 100W as you can to get the most sound from them. To connect the 251 Environmental to a receiver of less than 80W, in my opinion, would be wasteful.

The Bose SoundTouch SA-5 Amplifier was intended to work with the 251 Environmental. The SA-5 is a part of Bose’s SoundTouch line, which also includes WiFi amplifiers and speakers of all sizes. This enables you to use Bose products that connect to one another via your home WiFi network to build a complete multi-room entertainment system.


The SoundTouch SA-5 inputs support Bluetooth, WiFi, Ethernet, 2 x RCA, and 1/8-inch AUX. Additionally, the SA-5 is Alexa-compatible. You can buy a complete Bose package with speaker wire if you power your 251 Environmental using the SA-5.

Performance and Listening Experience

The Bose 251 Environmental Speakers truly shine when it comes to their performance in outdoor settings. With their ability to handle a wide range of musical genres and audio sources, these speakers deliver a dynamic and immersive sound experience. Whether you’re enjoying your favourite tunes, hosting a party, or creating a tranquil ambience, the Bose 251 speakers add depth and character to the atmosphere.

The weather-resistant design plays a pivotal role in maintaining consistent performance. Rain or shine, these speakers remain steadfast in producing high-quality audio, eliminating any worries about deterioration due to exposure to the elements.


Follow Bose’s recommendations for cable gauge if you intend to install the 251 Environmental yourself. Following are some guidelines for speaker wire gauge vs. cable run length:

  • 18-gauge – up to 30ft maximum
  • 16-gauge – up to 45ft maximum
  • 14-gauge – up to 70ft maximum
  • 12-gauge – 70ft and beyond

A bracket is included with the 251 Environmental for each speaker. By positioning the mounting points vertically rather than horizontally, Bose’s 251 Environmental brackets facilitate one-man DIY installations. This implies that you can position the speaker on the bracket, angle it, and secure it in place using two hands.

Only a vertical mount can be used for the 251 Environmental. The Articulated Array will lose its left/right dispersion by firing into the floor and ceiling if the speaker is mounted horizontally, which is obviously useless. Bose advises placing the 251 Environmental at least 7 feet apart for the Articulated Array to function at its best. Therefore, wherever you intend to place the 251 Environmental speakers, make sure there are at least 7 feet between them and that you can mount them vertically (15″ of vertical space).


The Bose 251 Environmental Speakers are constructed to withstand the rigours of various weather conditions. With a sturdy build and a UV-resistant polypropylene casing, these speakers are engineered to endure rain, snow, and even extreme temperatures. This durability ensures that your investment remains protected, delivering consistent audio performance over time.

Bose 151

Another outdoor speaker option from Bose is the 151 Environment. The 151 Environmental can be mounted either vertically or horizontally, unlike the 251 Environmental. With a temperature range of -40° F to 158° F, the speakers are also more resistant to extreme temperatures. Additionally, the 151 Environmental underwent 1,200 hours of salt-fog testing, which is twice as long as what is required by the marine industry for this kind of test. The 251 and 151 Environmental perform similarly in most other areas and have similar acoustic design elements. Alternatively, the SoundTouch SA-5 amplifier can power both of them.

What You Will Recieve

  • 2 x Bose 251 Environmental
  • 2 x mounting brackets with fastening knobs
  • Mounting hardware (8 screws and 8 plastic anchors)
  • 6 x rubber feet


Whether you’re a music enthusiast, a social entertainer, or simply someone who appreciates the finer aspects of life, the Bose 251 Environmental Speakers offer an unparalleled auditory experience. With their weather-resistant design, articulate sound quality, wide sound dispersion, and easy mounting options, these speakers make an investment that promises years of enjoyment, rain or shine. Elevate your outdoor entertainment with the Bose 251 Environmental Speakers and let the symphony of nature and music converge in perfect harmony.

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top