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Old 18th September 2008, 02:01 PM   #1
GK is offline GK  Australia
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Join Date: Jan 2006
Default Tweeters for wide baffles

Hi

Some quick qustions:

What type of tweeters work best with wide (infinite) baffle speakers - ie widest horizontal dispersion?

Also, how do ribbon tweeters compare? This one in particular:

http://www.raalribbon.com/products_flatfoil_140-15.htm

Anyone have experience with said unit in a wide baffle design?

Cheers,
Glen
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Old 18th September 2008, 02:55 PM   #2
sreten is offline sreten  United Kingdom
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Join Date: Nov 2003
Location: Brighton UK
Default Re: Tweeters for wide baffles

Quote:
Originally posted by G.Kleinschmidt

What type of tweeters work best with wide (infinite)
baffle speakers - i.e. widest horizontal dispersion?
Glen
That is question that you answer yourself with an assumption.

Peruse : http://www.zaphaudio.com/offaxis.html

Regarding wide dispersion :
The widest dispersion is self evidently from the smallest domes.
Phase guides / shields for the domes can/do improve dispersion,
DIYers tend to not like them, and remove them, FNGR AFAICT.

Quote:
Originally posted by G.Kleinschmidt

Also, how do ribbon tweeters compare?
Glen
Ribbon dispersion generally horizontally is comparative
to a dome of the ribbons width, so is usually very good.

Vertically though .... things are a very different matter ....
Which is not always a bad idea ..... though it usually is ....

It is used here IMO to better balance the power response of a
small open baffle midrange, BICBW, might not be a consideration.:
http://www.humblehomemadehifi.com/Modulus.html

FWIW I have (back in the boxes) a pair of Celestion 3000's,
with 1/2" x 21" ribbons, they are very strange animals ....

/sreten.
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Old 18th September 2008, 03:07 PM   #3
diyAudio Member
 
Join Date: Aug 2004
Location: Italy
hi,

I remember recently a guy have spent memorable words about the new 70-20 XR. Seems a top ribbon, very nice also. Curious to see the graphs

Cheers,

Paolo
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