Used to own these babies way back. Weak in the bass, of course, but midrange to die for. At least back then. I had the speakers in one of the enclosures, phase aligned. Also, had microfarrit capacitors installed in each speaker. Don't know how to tweak the high end, but that is certainly a weakness as well. Personally, I think you can do much better, now, in speakerdom, but they were, in their time, a great speaker. I drove mine with a Bryston 4B and an Audio Reseach SP5 preamp.