
21inch PA Woofer PRO Audio Sound System Line Array Customization Subwoofer. Professional Audio Design: Optimized with CLIO software for outstanding sound quality in nightclubs and stadiums. Wide Frequency Range: Delivers deep bass from 31Hz to 1500Hz with a 21-inch nominal diameter. High Power Handling: Rated at 1200W with a continuous program power of 2400W for robust performance. Premium Material Construction: Features paper cone, UK & Taiwan glue, and USA material spiders for durability. Flexible Customization: Offers full, minor, and flexible customization from samples or designs. OEM/ODM Services: Manufacturer providing OEM and ODM services for professional audio brands. Rigorous Quality Control: 100% visual and function inspection with full raw material traceability. Fast Lead Time: Off-season production within 15 workdays; peak season within one month.