Professional Systems Division

Design | Performance | Support

L1® Model II

portable line array system

Our most advanced L1 system for an audience of up to 500. With a 24-speaker articulated line array providing 180 degrees clear, even coverage, it combines our best sound reproduction with easy transport and setup. Designed to work with the T1 ToneMatch® audio engine, which provides four additional inputs, our largest library of ToneMatch presets and a complete suite of studio-class effects and processing.

For indoor applications only.

FAQ

What is the L1 Model II system?

The L1 Model II system is our most advanced L1 system for an audience of up to 500, combining our best sound reproduction with easy transport and setup. It is designed to work with the T1 ToneMatch audio engine, which includes four additional inputs, our largest library of ToneMatch presets, and a complete suite of studio-class effects and processing.

Why does the L1 Model II power stand contain only a single analog input?

Based on customer feedback, Bose provides a single analog input, which is suitable for many applications and is compatible with outputs from standard mixing consoles, DJ mixers, laptop computers and many other devices. This enables the layout of the power stand to be less cluttered with connectors that ultimately may not be used for many applications. The end result is a clean and compact design.

Musicians who require more inputs can purchase the T1 ToneMatch audio engine. This powerful multichannel audio device is designed for musicians to use with the Model II system. It contains our largest library of ToneMatch presets, proprietary zEQ, a complete suite of studio-class effects and processing, and five channel inputs.

Are there similarities between the L1 Model II system and line arrays currently in use?

Line arrays have been used for large concert performances as the PA component of a traditional triple amplification system. Unlike these large-venue systems, the L1 Model II system is designed as a portable implementation of a line or pole-shaped source. It is designed to be positioned behind each musician, providing accurate coverage for musicians and audiences.

What is the proper method for setting the gain on the L1 Model II power stand when connected to an analog source?

Play source material at the loudest volume that will be present in the performance and adjust the trim level until you achieve the desired volume. Refer to the signal clip LED on the power stand while adjusting the trim level until you see the LED go from yellow to red in color. Back the trim level off until the signal LED is predominantly yellow with brief peaks into the red.

What is the proper method for setting the gain on the L1 Model II power stand when connected to a T1 ToneMatch audio engine?

Adjust the output volume of the source to normal operating volume. Make sure the Master volume and channel volume on the T1 ToneMatch audio engine is set to 0. While playing your instrument/audio sources as loudly as you would during a performance, turn the Trim control on the applicable channel of the ToneMatch audio engine clockwise until the signal/clip indicator glows green or yellow. If the indicator flashes red or glows steady red, turn the trim control counter-clockwise to decrease the level.

Can I use the bass-line-out on the L1 Model II power stand to connect to a bass amplifier and cabinet?

The bass-line-out connector provides a flat 40 Hz to 180 Hz bandpass signal when no B1 bass modules are used with the power stand. We recommend unplugging the B1 bass modules to ensure correct EQ compensation of the Bass Line OUT jack, and phase consistency.

Do the mic inputs of the T1 ToneMatch audio engine have phantom power?

Phantom power +48 V can be applied to Channels 1-3.

How many B1 bass modules can you connect?

One power stand can power up to two B1 bass modules.

In what voltage is the L1 Model II system available?

The 120 volt version is available in the US, Canada and some Latin American countries. The 220-240 volt version is available in Europe and Australia.

How do I know which half of the Cylindrical Radiator to insert into the power stand first?

The upper and lower halves of the L1 Model II system are not identical. The bottom half is easily identifiable because it has a large end cap, which gets inserted first into the power stand. The upper half contains the Bose logo and uses a tongue-and-groove mechanism to ensure a solid mechanical and electrical connection to the lower half. Both halves are clearly labeled on the back, indicating proper insertion.

Can you use 2-wire Speakon cables for the B1 bass modules?

No. Only 4-wire Speakon cables should be used with the power stand. The additional two wires (+2 and -2) in the connector are used for sensing purposes. Upon connection, the power stand is able to sense and adjust (EQ and level) for 0, 1 or 2 B1 bass modules connected to the bass-module-out Speakon connector.

How can I tell if I’m using the correct Speakon cable?

If you plug in a 4-wire Speakon cable to the bass-module-out connector with music playing through, you will clearly hear the L1 Model II system mute for a moment. If you are using an incorrect cable, such as a 2-wire Speakon cable, the momentary muting will not occur.

Can the system be used with just one half of an L1 Model II system in venues where the ceiling may not be tall enough for assembly of the full loudspeaker?

Using only one half of the L1 Model II system will significantly impact the performance. The EQ would be incorrect and your ears still need to be at the same height as some part of the loudspeaker, which is difficult at 3.5 feet tall. While there should not be any damage to the system by using it like this, it is not recommended.

Can I use the system outside?

Yes. You can use your system for outdoor gigs, provided it is protected from extreme elements. The system has been tested to operate in 0°C to 50°C temperatures and be stored in -30°C to 70°C temperatures. In cases of light rain, take precautions to cover the back panel of the power stand. Water must not get into the air inlet slits inside the back panel, on the loudspeaker drivers or inside the L1 system cavity on the power stand.

How prone is the system to feedback?

The L1 Model II system is resistant to, but not immune from, feedback. Its performance in this critical dimension has been shown, in the vast majority of cases, to be significantly better than the traditional amplification approach of floor monitors and PA system.

Can I connect a passive sub woofer to the bass module output?

We do not recommend connecting anything except the B1 bass module to this output, as the internal amplifier and B1 bass modules are designed to properly equalize the system when connected. Use the Bass Line Out connection to feed a powered subwoofer or additional amplifier.

Where can the L1 Model II system be used?

The system is suitable for amplified music performances in venues with occupancies up to 500 people. Typically, this translates to maximum listener distances of about 150 feet (45 meters). Thus the system will fill auditoriums, places of worship, gymnasiums, ballrooms, dance clubs, coffeehouses and more—places where the vast majority of live music performances take place. In larger venues, a musical group can use the new approach on stage and enjoy all the benefits that allow musicians to hear themselves and each other better. Signals from the stage can be fed to speakers that supply sound to distant seating areas.

Can DJs use this system?

Yes. This system has important advantages over conventional systems. One problem with portable PA systems is the use of stand-mounted speakers, which are very loud close to the speaker and not loud enough away from the speaker. The L1 Cylindrical Radiator loudspeaker is unique in that you can adjust for the desired level on the dance floor and in the audience, and then walk right next to the speaker and not hear excessivly loud sound. This translates into much greater comfort for the guests.

The system also has a sleek, elegant profile that fits nicely into event décors and minimizes sight-line issues.

Can L1 systems be used as a traditional PA system?

Yes. L1 Model II systems can be used to replace PA speakers. Their unique radiation properties help them deliver more even sound coverage and a larger stereo field—a benefit that has been confirmed in listening tests. The benefits of compactness for transportation and rapid assembly also will be enjoyed.

How many B1 bass modules can I stack up on stage or when transporting?

You can stack up to four B1 bass modules in a column using the integrated alignment tabs on the sides of the enclosures.

I already own an L1 system. Can I purchase the T1 ToneMatch audio engine separately and use it with the system?

Yes. The T1 ToneMatch audio engine is available for purchase separately and is compatible with all L1 systems. When it is used with the L1 Model II system, the audio is connected digitally via the ToneMatch ports. When it is used with the L1 Model I or L1 Compact system, a separate power supply is required for the ToneMatch audio engine, and the audio is analog. If you have the L1 Model I system, simply connect the ToneMatch audio engine's master output jack to the analog input of Channel 3 or 4 on the L1 system power stand. If you have the L1 Compact system, connect the ToneMatch engine's master output jack to the ¼ input on Channel 2. You can purchase the ToneMatch audio engine power supply  from Bose or from authorized dealers of L1 systems.

Does the system ship with carrying cases?

Yes. The L1 Model II power stand and L1 Model II Cylindrical Radiator loudspeaker both ship with padded carrying bags. The B1 bass module ships with a cover.

What is the limited warranty?

The limited warranty in the US is two years on the electronic components and five years on loudspeakers.

What is included in the box?

The L1 Model II system includes the following:

  • Cylindrical Radiator loudspeaker
  • L1 Model II power stand
  • B1 bass module
  • Padded carrying bags for Cylindrical Radiators, power stand and B1
  • 4 conductor bass module cable
  • AC power cord
  • Demonstration DVD
  • L1 Model II system owners guide, B1 bass module owner’s guide, quick setup guide and product registration card

What accessories are available for the L1 Model II system?

  • B1 bass module
  • PackLite power amplifier Model A1 039057
  • T1 ToneMatch audio engine power supply