"Kindell' is actually Kindel, as in Bill Kindel. He operated a company called Kindel Audio in the '80s (at least) and also was a partner in a speaker-cabinet shop in California. Kindel speakers were made in California. As I recall, his partner decided to get out of the cabinet business, Bill lost his cabinetmaker, and closed his business. I as Two Jeffreys Audio was one of their (very-parttime) dealers in the '80s.
The PLS-A (an acronym for psuedo-linesource) uses six 6-1/2" bass/midrange drivers and 16 1" softdome tweeters and is 94dB sensitive. The bass-reflex box is ported to the bottom, so be sure they're at least 3" off the floor.
AFTER this post, I think I'll be up to 5 and will be able to post a pic.
Bill built these to a reasonably low price--they were introduced (in the mid-'80s) at $1600/pr
IIRC, and Bill had to use inexpensive parts to get them that low. IMO the drivers are good but not VG or excellent, with the tweeters maybe a little better than the B/MR drivers, which suffer a bit in transparency.
I owned 2 pairs; a local friend bought them and still has them. I fell into a great deal on other 6-1/2" drivers from Sonic Craft and both of us bought cartons of 24 each. My friend has replaced the Kindel drivers with these 6-1/2" SCs and much prefers their transparency...clarity...but the original PLS-As could still be termed at least 'good' quality.
I hope this helps.