I Key Buy 15-inch Iron Woofer Low Frequency Outdoor Broadcast Stage Bass Ktv Professional Speaker Diameter 383mm Magnetic 170mm - Speakers - AliExpress
STLF-15GA | 15" 300W Cast Aluminum Frame Replacement Woofer for Guitar Cabinets – Sound Town
STLF-12120A | 12" Cast Aluminum Frame High-Power Raw Woofer Speaker, 5 – Sound Town
Amazon.com: AUDIOTEK 10 Inches 1000 Watts Peak Power / 500 Watts RMS Slim Under-Seat Active Power Audio Car/Truck Angle Trunk Box Sub-woofer SUB/Supply Voltage: 11-15V DC : Electronics