J.V.C. jp did not have the SZ series listed in March. They were erased from the radar. They are now the only "premium" cans listed
When I needed specs/info/pics in March I had to go here
So they are clearly up and running with production of the sz. The 55x ...like you said....a whole generation of little brothers are gonna say their first cans were 55x with some ****ty ass pads from big brothers bass cans.
send em an e-mail someday bassheads and maybe they will change those damn pads!!