Q. I enjoyed your recent column on vintage audio equipment. I have a pair of ESS AMT 1C speakers with Heil Air Motion Transformer drivers. I have owned them since the 1970s and totally enjoy them. How ...
Elac embraced the AMT in the early 1990s with the company’s now-famous JET tweeters, and Legacy Audio uses AMTs not only for tweeters, but also for midrange drivers. The patents for the original ...
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