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RE: Henry Kloss "Loudspeaker Design - Hoffman's Iron Law"

Henry wasn't ignorant of the shortcomings of his speakers, he just wouldn't admit them publicly. A year after he wrote that I listened to his personal system in his office. It consisted of four Large Advents. They were stacked two per side, the upper cab inverted, creating an M-T-T-M. I'd never seen that done before, so of course I asked him why, especially as he didn't play them particularly loud. He said that the 6dB increase in sensitivity significantly lowered THD since the drivers didn't have to work as hard. I said that they sounded great and that he should make a speaker like that in one box. 'Too big' he replied. 'People want smaller, they don't care what it sounds like'. He then made a less than flattering remark about what Amar Bose was doing down the road.

Two years later I heard PK's personal system, which was equally interesting. He had a KHorn in the left and right corners and a Heresy centered on the wall in between them. He said it was the only way to get a real concert hall experience. It did sound good. I asked him why he had the diffraction horns in his speakers on the wrong axis. He said the dispersion wasn't that bad, and besides, if he had them vertical people would think it looked wrong and wouldn't buy the speakers.

Neither of these geniuses was above doing what they needed to do to sell their products. Principles don't pay the rent.


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