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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
gawdbless's avatar
gawdbless
1,235 posts
 
I love my Fostex F200a Mid matched perfectly (to my ears) with the wonderful Fostex T90A-EX super tweeter, thank you JohnK!

A friend of mine uses the 'Townsend' super duper super tweeter with his horns and swears by it.
amfibius
282 posts
 
If you have a supertweeter crossed too low (like 15kHz) it will interfere with your main tweeter with unpredictable results. Remember that at 15kHz, the wavelength of sound is in the order of a few millimeters, so if you place your supertweeter off by a fraction of an mm, the interference pattern will be different. The high frequencies may be either enhanced or destroyed ... depending on the summation of waves by the time it reaches your ear.

You may or may not like the sound this interference, but of course that is up to you :)
gawdbless's avatar
gawdbless
1,235 posts
 
Is it easier to add a super tweeter to horn speakers with better results than to add super tweeters to non horn speakers?
amfibius
282 posts
 
Depends on the horn speaker!

Horns are designed to work over a fairly narrow frequency band. If the wavelength is too long to fit the horn, the horn won't effectively couple the motion of the cone to air. End result is - sound is attenuated at that freq. and below. The same situation happens with high frequencies - short wavelengths bounce around chaotically in the horn - again it fails to couple cone motion to air - and again you get rolloff.

Some horns are designed for high frequency extension, but most horns I have heard do not do very well above 10-15kHz. If this is the case - supertweeters, or even normal tweeters with a HP filter, will work quite well.
johnk's avatar
johnk
1,976 posts
 
The only loudspeakers that are hard to add super tweeters to are ones with cabinets that dont allow super tweeters to be close to main drivers plus you need to beable to move the tweeter to ajust time arrival. A full range driver and horns are fairly easy to match too because of hi-frequincy roll off.If you have good extention above 25khz I wouldnt add one but most loudspeakers dont and many dome tweeters roll off far below this even if manufacter states 20khz is probly at -3db or greater. And off axis drop is is even lower for many domes.
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