High Order Quarterwave Society (DIY Paraflex development community) | A sneak peak at Ricky Tipper's giant sized 25hz tuned Paraflex cabinets for the B&C 21DS115 driver .....72" x 24" x 36"... | Facebook
GSG Audio MBM21 21" Subwoofer B&C 21DS115-4 INSANE Hifi Home Theater Sub For Sale - US Audio Mart
Recone kit B&C Speakers 21DS115, 4 ohm, glue not included
Impact Soundsystem - New toys in town 🕺 B&C Speakers SpA 21DS115, comes along with a big bass box next year! 🧙♂️ | Facebook
B&C Speaker 21DS115 - 21" Subwoofer
Outdo B&C 21DS115 and upgrade to modular subs - Speakerplans.com Forums - Page 6
Test Bench: B&C Speakers 21DS115 21-Inch Woofer | audioXpress
B&C 21DS115 is a very high power 21" subwoofer for speaker subwoofer systems- B&C 21DS115 21" Subwoofer has a lightweight neodymium magnet - B&C 21DS115 21" high power speaker for speaker subwoofer