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Bose L1MII-SB2 L1 Model II System (359375-0010) Portable Line Array

24 speaker articulated line array delivers 180-degree sound coverage, produces consistent tonal balance, little drop off over distance

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What's in the box:

  • L1 Model II power stand and cord
  • L1 Model II Cylindrical Radiator loudspeaker (top and bottom)
  • Loudspeaker carrying bags
  • Power stand carrying bag
  • B2 bass module and cable
  • B2 slip cover


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The L1 Model II will boost your performance with 180-degree sound coverage and smooth tonal balance.

Bose L1® Model II with B2 Bass Module, like the original Bose L1 system, replaces conventional monitors, mixers and PA speakers and is designed to improve amplified sound. High-performance B2 bass module delivers greater low-frequency output for larger audiences, has three settings for increased flexibility, and can be powered on a single L1 power stand. An optional PackLite® power amplifier allows a second B2 bass module to be added for maximum low-end power. System employs Articulated Array speaker technology for better tonal balance, and 24 vertically mounted drivers precisely angled to create clearer highs and more consistent tone in the room. Even people off to the sides of these speakers enjoy well-balanced, detailed sound.


  • Spatial Dispersion™ and Articulated Array®speaker technologies in the loudspeaker produce wide, uniform sound coverage.
  • 24 small drivers are arranged using Articulated Array speaker technology in a slim, vertical enclosure, creating nearly 180 degrees of horizontal coverage and consistent tonal balance.
  • Integrated power amplifiers in power stand provide clean, precise amplification for L1 Model II 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 ¼TRS 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.
  • Bass line out delivers post-DSP bass signal output. Accepts ¼ TRS phone cable. Use to connect powered subwoofer, additional amplification system or Bose® PackLite® amplifier with up to two additional bass modules.
  • 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.

Specifications for the Bose L1MII-SB2 L1 Model II System

{ "System Performance" : { "System Type" : "Self powered, two-way", "Frequency Response (±3 dB)" : "40 Hz - 12 kHz", "Frequency Response (-10 dB)" : "32 Hz - 14 kHz", "Nominal Dispersion" : "195° H x 0° V", "Maximum SPL @ 1 sq. m" : "115 dB SPL (121 dB SPL peak)", "Crossover Frequency" : "200 Hz (24 dB/Octave)" }, "Amplification" : { "System Power Rating" : "500 W", "Low Frequency Amplifier" : "250 W", "High-Frequency Amplifier" : "250 W", "Distortion at Rated Power" : "0.1% Max (30 Hz - 15 kHz)", "System Limiter" : "Dynamic limiter", "Overload Protection" : "Fuse/MOV/NTC/PTC", "Power Indicator" : { "Blue LED" : "System on", "Red LED" : "Fault" } }, "Transducers" : { "Driver Complement" : { "Cylindrical Radiator® Loudspeakers" : "Twenty-Four (24) 2.25" (57 mm) HF drivers", "B2 Bass Module" : "Two (2) 10" (254 mm) LF Drivers (4 Ω)" } }, "Channel" : { "Signal Indicators" : { "Analog Signal/clip LED" : [ "Green = Signal present", "Yellow = -3 dB below clip", "Red = Clip (limiter active)" ] } }, "Trim" : "+14 dB @ max", "Input" : "1/4" TS unbalanced or TRS balanced", "Channel Gain (1/4" Input)" : "-50 dB to +28 dB (line)", "Maximum Input Signal" : "+24 dBu (balanced)", "Input Impedance" : "10 kΩ ±10% (unbalanced)", "Additional Connections" : { "Bass Module Out (for B1 or B2 only)" : "NL4 connector (all pins wired, two for auto sensing). Bass output signal for driving up to two B1 bass modules (1 B1 = 8 Ω, 2 B1 = 4 Ω) or one B2 bass module (B2 = 4 Ω)", "Bass Line Output" : "Post-DSP bass signal output. Accepts a 1/4" TRS cable. Supplies low frequency signal for connecting a PackLite power amplifier or powered subwoofer", "ToneMatch Port" : "CAT5 Ethernet cable with RJ45 conneciton providing digital audio and power connection for the optional T1 ToneMatch audio engine", "AC Mains" : "IEC Connector" }, "Physical" : { "Enclosure" : { "Power Stand" : "Polypropylene cover with cast aluminum legs and steel chassis base", "Cylindrical Radiator" : "Aluminum enclosuer with ABS baffle" } }, "Grille" : "Powder-coated perforated steel grille", "Dimensions (Enclosure only)" : "Assembled Height 84.0" (2134 mm)", "Net Weight" : { "Cylindrical Radiators (pair)" : "33.7 lbs (15.3 kg)", "Power Stand" : "23.7 lbs (10.7 kg)", "B2 Bass Module" : "45.0 lbs (20.41 kg)" }, "Shipping Weight" : { "Cylindrical Radiators (pair)" : "41 lbs (18.6 kg)", "Power Stand" : "32.0 lbs (14.5 kg)", "B2 Bass Module" : "52.2 lbs (23.67 kg)" }, "Voltages" : { "US/Canada" : "100 - 120 V, 50/60 Hz 500 W", "Europe" : "220 - 240 V, 50/60 Hz 500 W" } }

Research Materials for Bose L1MII-SB2 L1 Model II System (BSE-L1MII-SB2)

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L1MII-SB2 L1 Model II System (BSE-L1MII-SB2) Brochure

L1MII-SB2 L1 Model II System (BSE-L1MII-SB2) User Guide

L1MII-SB2 L1 Model II System (BSE-L1MII-SB2) Drawing

L1MII-SB2 L1 Model II System (BSE-L1MII-SB2) Configuration Guide

L1 Model II System Specifications

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