new fullrange driver from emspeaker

lrntglls · 25th November 2007, 08:49 PM

Michel Fertin, the former owner of Fertin Audio, known for

its field coil line of driver has introduced a new

12 inch (30cm) - high efficiency (98db) -16 ohm -

fullrange (40hz-15khz) driver.

Match a light cone (34gr) with a strong field coil motor and

you get a very dynamic sound.

A whizzer cone keeps the coherence in the sound:

Michel Fertin prefer a gradual cone break up to do the hf than

the adding a tweeter with all the problems it implies.

He has design an open- baffle and a cabinet plan for the

diy.

http://www.emspeaker.fr/

alain_online · 25th November 2007, 09:39 PM

Salut Gilles,
How do these compare to 20EX ?
"Just" better bass ?
Alain

tinitus · 25th November 2007, 11:43 PM

I thought it was a creation from the hands of his daughter, or at least I liked the idea

as much as I like the look of that driver, it doesnt seem to produce much bass energy

BHTX · 26th November 2007, 02:57 AM

Quote:

Originally posted by tinitus
as much as I like the look of that driver, it doesnt seem to produce much bass energy

34 Hz Fs with a low Qts of .21 with only 1.5mm Xmax? No wonder.
Of course, if it weren't for this, efficiency probably wouldn't be so high.

planet10 · 26th November 2007, 04:51 AM

Quote:

Originally posted by BHTX
34 Hz Fs with a low Qts of .21 with only 1.5mm Xmax?

Sounds like horn.

dave

BHTX · 26th November 2007, 05:21 AM

Quote:

Originally posted by planet10
Sounds like horn.

Yep.

Scottmoose · 26th November 2007, 08:39 AM

Indeed.

Here's an interesting question though... why do so many websites, for the 'English' language option, use the US flag as the icon?

Zen Mod · 26th November 2007, 11:55 AM

Quote:

Originally posted by BHTX
Yeah, really..............
</OT>

even if 75% of my posts are certainly and deliberately OT , I can't agree more .......... this post of yours can't be more OT than it is .........

lrntglls · 26th November 2007, 05:12 PM

Hi, as for the bass; the LB12ex has a variable voltage so

the Qts can be increased by lowering the voltage; on the other

hand you loose a bit in efficiency. The Fertin 20ex has a Qts

of .45 and I would not consider it has being soft bass , quite

the opposite. I listen at 10V so the Qts would be near .4,

acceptable I think.

There's always the option of building a cabinet; but open-baffle

sound is the only option for me.

Field coil (strong motor)+ high efficiency+ light cone; these

are the characteristics of the Fertin sound.

Everything is a compromise; the main thing is to get a great

midrange and compromise with the lf and hf. No fullrange

does everything 100% right but it's the overall sound that

is important: fast- detail- alive and with great tonality.

planet10 · 27th November 2007, 08:10 AM

Subthread on Cultural Diversity split off to here

http://www.diyaudio.com/forums/showt...hreadid=112644

dave

25th November 2007, 09:39 PM	#2
alain_online diyAudio Member Join Date: Jun 2007	Nice nice nice ! Salut Gilles, How do these compare to 20EX ? "Just" better bass ? Alain

27th November 2007, 08:10 AM	#10
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	Subthread on Cultural Diversity split off to here http://www.diyaudio.com/forums/showt...hreadid=112644 dave __________________ community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

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25th November 2007, 11:43 PM	#3
tinitus diyAudio Moderator Join Date: Nov 2005	I thought it was a creation from the hands of his daughter, or at least I liked the idea as much as I like the look of that driver, it doesnt seem to produce much bass energy

26th November 2007, 08:39 AM	#7
Scottmoose diyAudio Member Join Date: Mar 2005 Location: UK	Indeed. Here's an interesting question though... why do so many websites, for the 'English' language option, use the US flag as the icon?

26th November 2007, 05:12 PM	#9
lrntglls diyAudio Member Join Date: Nov 2005	Hi, as for the bass; the LB12ex has a variable voltage so the Qts can be increased by lowering the voltage; on the other hand you loose a bit in efficiency. The Fertin 20ex has a Qts of .45 and I would not consider it has being soft bass , quite the opposite. I listen at 10V so the Qts would be near .4, acceptable I think. There's always the option of building a cabinet; but open-baffle sound is the only option for me. Field coil (strong motor)+ high efficiency+ light cone; these are the characteristics of the Fertin sound. Everything is a compromise; the main thing is to get a great midrange and compromise with the lf and hf. No fullrange does everything 100% right but it's the overall sound that is important: fast- detail- alive and with great tonality.

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