Clash of the titans: B&C Speakers 21DS115 vs RCF LF21N551. : r/diysound
B&C Speakers SpA on Twitter: "Introducing the 18DS115 Subwoofer: 4-layer coil, new suspension, for bigger Bl and Xmax. https://t.co/1xIwQz69xB #bcspeakers #subwoofer https://t.co/BVGCSaI4LO" / Twitter