![Amazon.com: Sound Town 21” 1000W Cast Aluminum Frame Woofer (Low Frequency Driver), Replacement Woofer for PA/DJ Subwoofer Cabinets (STLF-21500A) : Musical Instruments Amazon.com: Sound Town 21” 1000W Cast Aluminum Frame Woofer (Low Frequency Driver), Replacement Woofer for PA/DJ Subwoofer Cabinets (STLF-21500A) : Musical Instruments](https://m.media-amazon.com/images/I/71Eds7aEYcL.jpg)
Amazon.com: Sound Town 21” 1000W Cast Aluminum Frame Woofer (Low Frequency Driver), Replacement Woofer for PA/DJ Subwoofer Cabinets (STLF-21500A) : Musical Instruments
![PA-014 21 Inch Overweight Subwoofer Speaker 125 Core 250 Magnet High-Power Outdoor Ultra-low Unit 1200W/8 Ω (1PCS) - AliExpress PA-014 21 Inch Overweight Subwoofer Speaker 125 Core 250 Magnet High-Power Outdoor Ultra-low Unit 1200W/8 Ω (1PCS) - AliExpress](https://ae01.alicdn.com/kf/Sca203b94f1ba44d2b66c66488b81bdb2Q/PA-014-21-Inch-Overweight-Subwoofer-Speaker-125-Core-250-Magnet-High-Power-Outdoor-Ultra-low.jpg)
PA-014 21 Inch Overweight Subwoofer Speaker 125 Core 250 Magnet High-Power Outdoor Ultra-low Unit 1200W/8 Ω (1PCS) - AliExpress
![B&C 21iPAL is a very high power 21" subwoofer for speaker subwoofer systems- B&C 21iPAL 21" Subwoofer has a lightweight neodymium magnet - B&C 21iPAL 21" high power speaker for speaker subwoofer B&C 21iPAL is a very high power 21" subwoofer for speaker subwoofer systems- B&C 21iPAL 21" Subwoofer has a lightweight neodymium magnet - B&C 21iPAL 21" high power speaker for speaker subwoofer](https://usspeaker.com/images/bc-21ipal-f-size475.gif)