Anyone try Townshend Super Tweeters?

Gregm...What's with this 10 KHz roll off with CDs and speakers? My disc player measures flat to the top of my spectrum analyser,20 KHz, and, before equalization, my Maggie MG1.6QR only falls off in the highest 1/6 octave band (just below 20 KHz). It is true that music, whether on LP or CD, typically has rolled-off energy above about 10 KHz.

I know that my ability to hear pure sine wave signals quits around 14KHz or so, but I can still "hear" the effect of tweeters and supertweeters much higher than this. I think this is because a music signal generally has waveforms that are as steep as a sine wave at 20KHz or higher, and the ear (at least mine) senses the steepness of the waveform.

Gregm...I am not sure I understand exactly your suggestion, but I have noticed that when playing music the spectrum measured by the microphone (real sound) on one analyser is amazingly alike to the spectrum measured (by a second analyser) for the electrical signal. Of course both displays are constantly changing, so an exact comparison is not possible but close correlation is obvious. As I said, it surprises me how close this is, what with room effects and all.

Gregm...Credit should go to the Behringer auto equalization process. All I do is push the buttons.