Pyramid Sequerra T1 Ribbon Tweeters Extremely Rare Set ...

From the Pyramid Loudspeaker Corporation promotion info October 1978 : The Pyramid model T-1 Ribbon Tweeter FOR THE FIRST TIME; A SPEAKER THAT REACHES 40 KHZ AND BEYOND, WITH NEGLIGIBLE DISTORTION AND NO COLORATION. Do you know what "uncolored" high frequencies really sound like? The answer is ...

From the Pyramid Loudspeaker Corporation promotion info October 1978 : The ...