Any Klipsch vintage SW sub series fans?

I recently came across one of these for a music only application and was pleasantly surprised with its performance....clean, punchy, and very musical.They came out mid 90s, right before the HT craze hit big, which is why I assume they sound their best with 2 channel sound. Any specific models that stand out?
0af4f876 eb83 4323 a292 3564f9bafea1phasecorrect