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Old 18th February 2002, 12:56 PM   #11
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Sandro:
Nice input...Althogh, I do not understand what you mean with "Big AMT from Italy"?!?! Any webadress?

I am a bit interested in a one way solution...off course... It will not be 'my product', but this is more a consultant mission! ;-)

I find it very strange that there are a LOT of drivers around 90dB, and then the proffessional driver units around 98-102dB...But where is the golden avarage? That is, some 95dB?

deeply confusingly....
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Old 18th February 2002, 02:48 PM   #12
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Bernhard,
You got me intersted in Fertins. Where to look for those drivers?
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Old 18th February 2002, 02:51 PM   #13
Super is offline Super  United States
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Have you considered a line array, or the use of more than 3 drivers? Its a great way to boost sensitivity, and in my opinion, line arrays are the way to go. (I've converted ever since I heard a line array speaker.) If not, you can still use a high quantity of drivers, just not in the form of an array, and possibly in an open baffle to keep the cabinets very simple. I think the name of the speaker I'm trying to think of is the Phalanx, I'll try to poke around the web and find it.

Edit:
Here's the Alon Phalanx: http://www.alonbyacarian.com/products/phalanx_b.htm

Note that it has low sensitivity, seeing as its a 4 way system. I was just referring to the arrangement of their midrange/midbass drivers as an alternative to line arrays.
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Old 18th February 2002, 04:28 PM   #14
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Default Tipolo

Hi
my project called Tipolo, a strange dipole, have more than 97 dB 2,83V 1m.
you can see it on my site.

ciao
Filippo
www.audiofanatic.it
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Old 18th February 2002, 06:08 PM   #15
dice45 is offline dice45  Germany
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Quote:
Originally posted by HPotter
Bernhard,

You got me intersted in Fertins. Where to look for those drivers?
HPotter,

only in French, look at http://perso.wandoo.fr/hpfertin/index.htm
only in German, look at http://www.blackforestaudio.de/FERTIN/fertin.html The open baffle speaker on the German website was the one i listened to.
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Old 18th February 2002, 06:13 PM   #16
dice45 is offline dice45  Germany
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Quote:
Originally posted by epkpeng
I find it very strange that there are a LOT of drivers around 90dB, and then the proffessional driver units around 98-102dB...But where is the golden avarage? That is, some 95dB?
the Fertin FLB20 MkII (the one with the peramanet magnet) has 94dB/W/m. Not cheap @ US$600 a pair except if compared to the field coil version.
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Old 19th February 2002, 09:24 AM   #17
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The 'big AMT' is the top version of the ESS/Heil Air Motion Transformer, Italy is mentioned only because it is the only DiY market price that I know!

Unfortunately I could not find the tech sheets, but you can have some info here. If you never heard it, I think it is worth to listen to some system that uses it. Personally I don't like too much the smaller AMT (the non-dipole versions) but the big ones for me are great speakers.


http://www.bsaudio.nl/ESS-luidspreke..._home_ned.html

http://www.snippets.org/ldsg/sect-10.php3

To see the prices in Italy go here

http://www.digitex.it/listini.html

and then pick ESS in the list at left.
Maybe try calling the guys at Digitex, don't know if they speak english but normally they are very kind and supportive.

Last Minute: here is a German shop who lists a lot of high sens. non-conventional tweeters.

http://www.lautsprechershop.de/hifi/baend.htm

and a German brand Eton who markets the small AMT (see under tweeters)

http://www.eton-gmbh.com/htm/index.htm


bye
sandro
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Old 19th February 2002, 09:49 AM   #18
JohnR is offline JohnR  Australia
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At the low end of the price range, the HE10.1 from www.adireaudio.com or www.diycable.com is 95 dB.
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Old 20th February 2002, 08:46 AM   #19
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Question AMT???

Quote:
Originally posted by epkpeng
Sandro:
Nice input...Althogh, I do not understand what you mean with "Big AMT from Italy"?!?! Any webadress?

Sorry to interrupt your conversation, but:
What he means is an 'Air motion transformer'. Big heavy shunk of metal. Looks like a weird Electrostatic speaker.
This is probably the way to go if you still want HiFi/Hi-end sound quality. You can combine this AMT with two eg. to bass/midway drivers with say 90/91 db in parallel. This will cranck up your sound level with 6 db.

I am a bit interested in a one way solution...off course... It will not be 'my product', but this is more a consultant mission! ;-)

I find it very strange that there are a LOT of drivers around 90dB, and then the proffessional driver units around 98-102dB...But where is the golden avarage? That is, some 95dB?

deeply confusingly....
Question?
Why on earth do you want a 95 db speaker system . Do you life in a concerthall? This is quit a lot of sound your willing to produce.
Maybe, you can elaborate on this so i can understand what reason you have for building such a system???

If you want more info on this, just let me know (On or Off-forum).

Greetings,
Mazz.
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Old 20th February 2002, 11:34 AM   #20
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Well...actually I have reveived a request from a company who builds tube amplifier. These will have some 7watts, whic have been calculated to match with ~95dB sensitivity.

My experiense is that HIGH Sens vs LOW(/er) Sens gives:
HIGH - musicality, rythm etc
LOW(/er) - detailed, soundstage 'hifi parameters'...

I also asked, because there are, to my knowledge, no drivers between the professional PA and the 'hifi drivers'(Scan Speak, Vifa, Eton etc).
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