Von Schweikert Audio Shockwave V-12XS Subwoofer = superior
https://www.youtube.com/watch?v=jRIN0_Mr2fQ How subs work by Damon Von Schweikert $33,000 pair.
Also in 15" currently. 2025 10" version at much reduced price At shows, sensational combined with even the lowest priced Endeavor speakers-sounded huge
These are high end subs that do more than the typical sub. Based on the speaker line (I have 15" subs with the same new Foundation 1000 watt Class D amps in my VR9 SE Mk2 as the upgrade).