I have 4 Jbl L-1 speakers. they are 6" bass/mid 1" titanium tweeter and are about 12 years old or so. I use them for my surrounds on my HTS. And they are the only speakers on my stereo system that are ported. Other than the dual 8" sub for the hts.
Stereo 12" passives the only way to do it.
The age is probably why you don't see anything about them now.