Beginning with two DIY JBL 4530 sub-bass horns, Ray Dones Octavium, Jonas Miller and Ken Kreisel's Volkswoofer, Bag End, EarthQuake Sound and David Hall's Velodyne from ULD to DD Plus, I've found the evolution of the mechanical and processing 'stuff' amazing.
Duke LeeJeune's AudioKinesis' four cabinet Swarm, a simple and affordable bass mode eliminating system has brought room lock satisfaction to many.
In professional reinforcement Cerwin-Vega, Meyer Sound and Danley Sound labs have made some phenomenal strides in reducing size and distortion.
As a working Bassist my 360/361 and 8-10 trunks haven't left the house in decades. I carry my fiddle under one arm and a 10" upshot and AI Focus amp in a back pack.
Bass has been berry berry good to me...