Basson's 4x10 bass cab has the same heavy magnet speakers as the B210B and the B810B for a similar unique tone that's slightly more aggressive than the B210B. The B410B produces subharmonics down to 28Hz, which is unusual for 4x10" bass cabs. The result is like "warm thunder." The oversized 200 oz. speaker magnets and 1,000 watts RMS power handling keep the cones moving lots of air, increasing sustain and volume with longer wavelengths for massive low end.