K1-SB Dual 15 Inch Outdoor Passive Pa Subwoofer Speaker for Stadium - Buy K1-SB subwoofer, subwoofer speaker, 15 in subwoofer speaker Product on Sanway Professional Audio Equipment Co., Ltd.
Single 15" Empty Subwoofer Enclosures & Boxes | Skar Audio
BUILD THIS! 15" two-way PA cabinet design - Celestion