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Transmission line vs acoustic suspension loudspeaker design
I received an email recently from someone who was questioning my approach to transmission line speaker design as a special case of acoustic suspension speaker design. He said his first speakers were AR 2A speakers. He said he is “a big advocate of sealed boxes since there's no question properly designed they have better bass control than ported designs(no matter how well they are designed.”
His said his “second speakers were IMF Studio 2 transmission lines and living in Philadelphia [he] became a life long pal with Bud Fried.” He said he knows something about transmission lines and “don't get the comparison I make with then
and acoustic suspension.” To quote: “I might add that Bud would be rolling in his grave with the comparison. He [Bud] disliked acoustic suspension. “I'm not trying to be smart [He said.]. It's just that your comments take me back to my early days and I'm
seriously asking for an explanation that I didn't find on your web site.”
I replied that I met Bud Fried at summer CES in Chicago 1992/1993 where we were both exhibiting. At the time I had no particular interest in transmission line designs and that I hope Bud is tolerant of other ideas and is resting peacefully.
Rather than write a long treatise defending my approach, I referred him to read reviewers' comments about the following acoustic suspension speakers: Skiff, Kayak, Discovery, and then read reviewer's comments about the acoustic suspension speaker's transmission line analogues: Sampan, Windjammer, Enterprise, especially with reference to the Sampan's, Windjammer's and Enterprise's bass performance. In each case the transmission line speaker is using the same exact driver and the same crossover components as its acoustic suspension analogue. The primary difference is the cabinet.
I have a totally different approach to TL design and as you can see it works.