New Jordan driver - preliminary details

Colin · 8th September 2012, 10:19 AM

Preliminary tech specs for the new Jordan JX92S replacement have gone up on the Jordan website

Jordan loudspeaker drive units

The measurements are for prototypes. There is also a photo of the new driver.

richie00boy · 8th September 2012, 10:57 AM

Looks really good both from a performance point of view and cosmetic. Good to see they are now UK made too. Look forward to getting hold of a pair.

Scottmoose · 9th September 2012, 11:33 AM

Looks interesting. Unusually low mechanical damping. Be nice to see a more detailed waterfall plot.

R-Carpenter · 9th September 2012, 01:33 PM

looks interesting. Is this a "heat pipe" kind of thing?
I think dampening of the surround is pretty high. Cone resonance is around 9k and it's not more then 5db without THD going through the roof. But I'd wait for more measurements to come out before making any sort of assumption.

Bigun · 9th September 2012, 03:10 PM

Looks like a phase plug ??

Colin · 9th September 2012, 03:36 PM

The centre plug is a phase plug. The entire driver is a little more compact - the chassis is different and there is no cancelling magnet on the back.

Re the waterfall - I presume it's not worth doing a more elaborate plot until the production model is available.

planet10 · 9th September 2012, 06:01 PM

Quote:

Originally Posted by Scottmoose

...Unusually low mechanical damping. ..

You mean a low Qms, high mechanical damping... with numbers like that we have a candidate for current drive

dave

planet10 · 9th September 2012, 06:04 PM

Quote:

Major technical parameters are close to the original JX92S,enabling them to be used with the same or very similar cabinet alignments.

The parameters are close to the old JX92, not the EAD JX92

dave

sreten · 9th September 2012, 06:39 PM

Hmmm....

Nothing to get excited about so far compared to the 2008 version tested by Zaph.

Very low Qms is usually the remit of very budget (AV) drivers, I can see what P10's
comment is about regarding the low Qms, but most are very suspicious of very high
mechanical damping due to possible / probable hysteresis effects.

I don't know the politics, but I'm expecting it to be a very expensive driver for what is.

rgds, sreten.

northernsky · 9th September 2012, 07:55 PM

Hi,

I see in the picture that the external shape is no more circular. Does it mean they can not replace old JX92 drivers in old cabinets?

It would be really a pity

Renato

8th September 2012, 10:19 AM	#1
Colin diyAudio Member Join Date: Aug 2003	New Jordan driver - preliminary details Preliminary tech specs for the new Jordan JX92S replacement have gone up on the Jordan website Jordan loudspeaker drive units The measurements are for prototypes. There is also a photo of the new driver.

8th September 2012, 10:57 AM	#2
richie00boy Did it Himself diyAudio Member Join Date: Nov 2003 Location: Gloucestershire, England, UK	Looks really good both from a performance point of view and cosmetic. Good to see they are now UK made too. Look forward to getting hold of a pair. __________________ www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, kits and more

9th September 2012, 01:33 PM	#4
R-Carpenter diyAudio Member Join Date: Oct 2007 Location: Brooklyn Navy Yard	looks interesting. Is this a "heat pipe" kind of thing? I think dampening of the surround is pretty high. Cone resonance is around 9k and it's not more then 5db without THD going through the roof. But I'd wait for more measurements to come out before making any sort of assumption. __________________ http://www.diy-ny.com/

9th September 2012, 06:39 PM	#9
sreten diyAudio Member Join Date: Nov 2003 Location: Brighton UK	Hmmm.... Nothing to get excited about so far compared to the 2008 version tested by Zaph. Very low Qms is usually the remit of very budget (AV) drivers, I can see what P10's comment is about regarding the low Qms, but most are very suspicious of very high mechanical damping due to possible / probable hysteresis effects. I don't know the politics, but I'm expecting it to be a very expensive driver for what is. rgds, sreten. __________________ There is nothing so practical as a really good theory - Ludwig Boltzmann When your only tool is a hammer, every problem looks like a nail - Abraham Maslow

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9th September 2012, 11:33 AM	#3
Scottmoose diyAudio Member Join Date: Mar 2005 Location: UK	Looks interesting. Unusually low mechanical damping. Be nice to see a more detailed waterfall plot.

9th September 2012, 03:36 PM	#6
Colin diyAudio Member Join Date: Aug 2003	The centre plug is a phase plug. The entire driver is a little more compact - the chassis is different and there is no cancelling magnet on the back. Re the waterfall - I presume it's not worth doing a more elaborate plot until the production model is available.

9th September 2012, 07:55 PM	#10
northernsky diyAudio Member Join Date: Feb 2008	Hi, I see in the picture that the external shape is no more circular. Does it mean they can not replace old JX92 drivers in old cabinets? It would be really a pity Renato

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