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Thoughts on adding a Super tweeter .

I have posted something like this before,but thought I may ask for follow up input.
I already have a superb tweeter,ruler flat to 25khz(titanium),yet wonder if something like the Townshend(it starts to come in above 20 khz,and goes out to a zillion khz,almost)or Murata(comes in at 15 khz,Too low?, goes to a trillion,just kidding btw,)would add "real world"enhancements to my existing set-up.I have NO problems,with high freq performance,as of now,yet in this hobby,one can always be surprised.
Any thoughts would be most appreciated!

Best!
sirspeedy70680e509

Showing 2 responses by eldartford

eldartford
4,262 posts
 
You will be overrun with bats.
eldartford
4,262 posts
 
Johnk...The wavelength of 20 KHz is about 2/3 inch so a supertweeter movement of 1/3 inch represents a 180 degree phase shift. Since the supertweeter and the tweeter are not exactly colocated even a small change of listener position will alter the phase relationship.

We really can't hear the frequencies that the supertweeter produces, yet I agree that it changes what we do hear. I think that the ultrasonic energy sensitizes the ear to the fact that something is going on up there. Then the sense of hearing creates what ought to be there in terms of harmonics of lower frequencies. If this is true phasing is unimportant. Some speaker systems that have supertweeters have them mounted on the back. Clearly phasing is completely random for such a speaker. Small movement of a forward firing supertweeter may affect the sound because of beaming, rather than phase change. This is why rear firing supertweeters are used.
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