02Pete,
I sold many pairs of the original 02 Model THIEL back in 1983/84, and was frankly dismayed when they elected to stop manufacturing them. At $350. for the pair, they were really, really good.
Jim Thiel told me that they were going to only offer the CS (coherent source) speakers from that point on. It was a business decision too, as we all have to realize I suppose that, taking someone out of the market with a $350. purchase may not have been wise. Also, they were looking to establish the kind of élan that lesser priced, non time aligned speakers and not 1st order crossover speakers would present to the marketplace.
At the time I was distressed, but now understand their thinking.
They were good speakers, and an amazing bargain...very flat with more than acceptable bass for a small cabinet.
They were efficient, (88db??) and an easy load to drive--they did NOT dip low in impedence as most of Jim's later designs.
Hope this helps.
Good listening,
Larry