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RE: You know what

Posted by Pat D on March 3, 2011 at 19:26:09:
The difference between the Kef 104 and Kef 104aB is the crossover. After 17 nor 18 years, one of the crossovers capacitors went, so I had the distributor put in the 104aB crossover. I am quite familiar with both versions of the speaker. I certainly don't need HP to tell me how they performed.

The Kef 104 and Kef 104aB versions had a mid-range control, plus or minus 2 dB. The crossover was at 3 kHz. This of course means that the off axis is not as flat as with many modern speakers.

With the Kef 104, I turned the midrange control down to the -2 position. With the Kef 104aB, I turned it up to the +2 position, which Richard C. Heyser considered to give the flattest response. I couldn't compare them directly, of course, but I think I preferred the older 104.

If HP said there was a peak in the upper midrange of the Kef 104, I can only say he didn't know what he was talking about. The original Kef 104 was very flat in the listening window, no peak in the upper midrange. Indeed, peakiness in the upper midrange is something I particularly dislike. It was a somewhat distant sounding speaker, but I like that. If HP thought the sound was too forward, he could have turned the midrange control down.