I'm reluctant to sell these but they haven't been getting much use the past few years. I ran these as my main speakers for several years before upgrading to a pair of ESS AMT Monitors. I first acquired these speakers about 11 years ago, at the time the passive radiators needed reforming, but I instead found a pair of NOS radiators on "the auction site". I upgraded the crossover capacitors to metallized polypropylene a few years ago. Anyhow, if you're in the know, these have the legendary Heil Air Motion Transformer (AMT) tweeters (used by ADAM speakers in their studio monitors). The closest modern equivalent would be ESS 10" AMT Series Speakers. Open to potential trades - looking for a classical guitar with a pickup. REDUCED: was asking $600, now $400 firm.