L1® Model 1S system with B2 bass

For a limited time


  • Recommended for audiences up to 300
  • 12-speaker articulated line array delivers 180-degree horizontal sound coverage
  • Produces the most consistent tonal balance with less volume drop-off over distance
  • System's interconnecting pieces allow for easy transport, setup and breakdown
  • B2 bass module included

Spend less time setting up your gear and more time enjoying it. The new L1 Model 1S portable line array system delivers a potent combination of portability and performance. It's compact and light enough to make setup quick and easy, yet powerful enough to fill a mid-sized venue. Includes one B2 bass module for more flexibility and even greater power at the low end.

Put your PA behind you

The vertical configuration of the system's small, closely spaced drivers allows the L1 Model 1S system to project sound forward and to the sides—delivering 180-degree coverage—but very little up and down, reducing unwanted reverberation. This produces consistent tonal balance as sound spreads more evenly across the stage and into the audience, and the volume level drops off much more slowly than with a conventional speaker.

Unique Bose® technologies enable the system to serve as both PA and monitor. It can be positioned behind or to the side of the performer—and you hear just what the audience hears. You're in control, and there's no need for conventional monitors, mixers and PA systems.

Convenience to go

The three components of the L1 Model 1S system—upper array, lower extension and power stand—connect quickly and easily without the need for separate speaker stands. Setup and breakdown take just minutes. And everything stores neatly into the included carry bags, making transport easy, too.

Full, flexible bass

The high-performance B2 bass module delivers greater low-frequency output when you need more powerful bass for larger audiences. The module includes three settings for increased flexibility. The normal setting is ideal for bass guitar or when miking a kick drum. A higher setting is designed for DJ/music playback applications. And the lower setting works well for acoustic guitar and vocals.

Multichannel flexibility

The optional T1 ToneMatch audio engine adds four more channels, so you can expand the system and connect additional instruments and microphones. You can also use the ToneMatch engine to fine-tune your sound with powerful, proprietary tone-shaping tools.


  • Spatial Dispersion™ and Articulated Array® speaker technologies in the loudspeaker produce wide, uniform sound coverage. The 12 small drivers are arranged using Articulated Array speaker technology in a slim, vertical enclosure—creating nearly 180degrees of horizontal coverage and consistent tonal balance.
  • Integrated power amplifiers in the power stand provide clean, precise amplification for L1 Model 1S system with up to two B1 bass modules or one B2 bass module.
  • ToneMatch® port on power stand for digital audio and power connection to ToneMatch audio engine.
  • Analog input, trim control and signal/clip LED for line-level analog input via ¼" TRS phone cable. Can be used for instruments or other audio sources like DJ mixers, MP3 players, computers or DVD systems.
  • Bass module out for amplified bass output signal to one or two B1 bass modules or one B2 bass module. L1 system automatically adjusts equalization appropriately when bass modules are connected.
  • Interlocking design of the four lightweight components eliminates the need for speaker stands and speaker wires. Setup takes only minutes.
  • Retractable legs provide stability for streamlined power stands and loudspeakers. Four retractable legs fold out of power stand simultaneously for quick setup and compact transport.
  • Convenient carry bags—one each for the loudspeaker, power stand and bass module—make getting to and from your gig that much easier.

B2 bass module

  • Compact enclosure is easy to transport, set up and break down. Small footprint takes up considerably less space than traditional bass cabs required for same performance. Interlocking end caps let you securely stack two modules together on their sides.
  • Highly efficient speaker design features two 10" (13.3 cm), high-output, high-excursion drivers that produce deep, strong bass from a small enclosure. Three level settings provide flexibility of output. When connected to power stand, active equalization circuitry automatically adjusts bass signal appropriately.



  • L1 Model 1S top array:43.5" H x 3.5" W x 4" D (16.3 lbs)
  • L1 Model 1S bottom extension:39.63" H x 4.15" W x 4.13" D (8.5 lbs)
  • L1 Model 1S power stand:5" H x 10" W x 27" D (23.7 lbs)
  • B2 bass module:23.4" H x 13.31" W x 18.9" D (45 lbs)

In the box

  • L1 Model 1S power stand and cord
  • L1 Model 1S top array and bottom extension
  • Loudspeaker carrying bag
  • Power stand carry bag
  • B2 bass module and cable
  • B2 slip cover
Rated 5 out of 5 by from My dream speakers I dj for bars and wedding receptions. Hands down these speakers are the best in my opinion. I've gotten alot of comments on the sound quality. People find it hard to believe that it's coming from these speakers. Then I point to the name.
Date published: 2016-06-30
Rated 5 out of 5 by from BEST option for general acoustic group use We are a 4 person acoustic Bluegrass/blues/roots/originals band with vocals, some mic'd instruments and some DI input instruments. After fighting with big nasty directional speakers/monitors/stands for years. I finally grit my teeth and bought a Bose L1 1S with B2 bass module. We run into the Bose through a Mackie 16 channel mixer using 7-10 channels, and use the single tower and B2 as all our sound and monitor. AWESOME sound quality and clarity from small coffeehouses to large outdoor beer gardens ( 3-400 person areas ). ZERO feedback issues even running it very loud set behind us. AMPLE BASS even in big open areas. I use it as a PA for other more "electric" groups in the same settings and it performs flawlessly for all types of groups. One thing for new users to note is - even though the Bose L1 is very feedback resistant, use as your monitor requires ample distance either behind you or diagonally from you so it is not too loud for your players. Protect your hearing! We're learning to consider ourselves the "closest audience member" in terms of setting the overall volume, and try to get the tower at least 8 - 10 feet behind us or better still to the side slightly back of us. The linear speaker tower spreads an even 180 degrees of sound and the drop-off is minimal using my db meter even 30-40 feet away, and fades slowly so you need not "crank" it too loud at the source in our experience. The retail price was bracing, but as I added up the cost of decent powered speakers, stands, a couple good floor monitors and all the cabling monkey business for that stuff, the Bose L series became pretty reasonable, and is WAY easier to set up fast and transport. A perfect solution for acoustic groups playing in a lot of different venues.
Date published: 2015-08-28
  • 2016-10-20T07:43CST
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Accessories FAQs


Does every musician need his or her own L1 system?

No. In some cases—for example, amplifying a larger group on a small stage—two or more musicians standing or sitting next to each other could share one L1 unit without significantly reducing the core benefits of the system.

Why does the L1 Model 1S power stand have only one analog input?

The design of the power stand is intended to be clean and compact—not cluttered with connections. Musicians who require more inputs can purchase the T1 ToneMatch® audio engine, which is specifically designed to work with the Model 1S system.

Can I add more bass modules?

The system has enough built-in power to handle two B1 bass modules or one B2 bass module.

Can I connect a passive subwoofer to the system's bass module output?

We do not recommend that you connect anything other than the Bose® B1 or B2 bass module to this output, because the bass modules and the system's internal amplifier are designed to properly equalize the system when connected.

Where can I find more technical information and discussions about L1 systems?

Visit the L1 Systems Users Forum for extensive technical discussions, interactive tools, videos and other helpful resources for L1 systems. Visit the forum »




L1 Model 1S system

Owner's guide

B2 bass module

Owner's guide


Presets and firmware downloads

See the latest presets and firmware for the ToneMatch® audio engine and L1 systems.

L1 Systems Users Forum

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