I have one system based around Phy and another system based around Fostex drivers. High efficiency single driver cannot be beat for small group classical, jazz, and vocals, I believe mostly due to the realistic and natural-sounding midrange magic. Highs and lows are slightly rolled off, which only serves to emphasize the midrange magic.
High-Efficiency Single Driver Speaker System
For those of you who have gone to the 'Dark-side'---a high-efficiency single driver system and never looked back, I'd like to get your feedback on two specific things: 1)What type of music do you mostly listen to, and 2)What do you find are the most appealing characteristics that you find lacking in more traditional lower efficient, high power amplifier-based system. I currently have a custom EL34 JWN customized amp rated around 35-45 watts and I'm thinking about going this route.