The DJ Speaker 21 Inch 1999+1500 Watt Model GL21X3500HD » delivers exceptional sound strength for large scale events and professional audio setups. In the description, ATI Pro Technologies ensures this GLABS speaker offers deep bass, wide frequency response and high SPL output, making it ideal for outdoor shows, concerts and big DJ performances. Its robust ferrite magnet system and heavy duty cone design provide long lasting durability and distortion free sound even at peak power. Designed for powerful impact and reliable performance, the GL21X3500HD is perfect for DJs who need strong, clear and dynamic audio delivery in every environment.