Double 15 inch speakers # Subwoofer # Sound quality # Promotion # Sound system # Factory Dual 15 inch full frequency professional speakers, application scenarios: small performance systems, multifunctional halls, bars, KTVs, lecture halls, and other places For pricing information, please contact us via WhatsApp Zalo WeChat at 86 18902557150 Sandy Audio is a factory and terminal supplier, and we have been in the professional audio industry for 28 years. We pursue sound quality and stability, and