Bose L1 Model II with B1 ชุดลำโพงโบส Portable PA System Single Bass System with ToneMatch Engine /4-channel Mixer, Loudspeaker Line Array 24-speaker 

Portable PA System with T1 ToneMatch Audio Engine/4-channel Mixer, Loudspeaker Line Array, Powerstand, B1 Bass Module, and Included Carrying Bags Portable Sound System

Bose L1 Model II All-in-one PA System Features:

• 4-channel PA system and stage monitoring solution
• Wide, uniform sound coverage, courtesy of Spatial Dispersion and Articulated Array speaker technologies
• Integrated power amplifiers can provide clean, precise amplification for up to two B1 bass modules
• Includes one B1 bass module
• Includes Bose's T1 ToneMatch audio engine and 4-channel mixer with more than 100 ToneMatch presets
•  

L1® Model II system with B2 bass

• Recommended for audiences up to 500
• 24-speaker articulated line array delivers 180-degree horizontal sound coverage
• Produces the most consistent tonal balance with little volume drop-off over distance
• System's interconnecting pieces allow for efficient transport, easy setup and breakdown
• One B2 bass module included