I have been listening to my Jordans jx92s for several months, and they sound great in a 48" MLTL triangular box. Time to try something new. I would like to build some Changs, over the holidays, for the Jordans, ie Jimi Chang as per the frugal site, but as a half jimi. Can someone help me with the dimensions of the box?
Thanks
JimS
Thanks
JimS
I scrapped it, as the availability of the Jordans is questionable & their specs appear to vary depending on which OEM builder a particular batch had. If you contact Dave or myself via the FH site we might be able to do something.
Scottmoose said:
It's my understanding that the Jordans are being made in India now. I was thinking about buying a pair for myself but decided against it for that reason. Instead, I chose to order a pair of Alpair 10's from Markaudio in Hong Kong.
Has anyone here had any experience with the Alpair drivers? I would appreciate any ideas or experiences others would be willing to share.
It's my understanding that the Jordans are being made in India now. I was thinking about buying a pair for myself but decided against it for that reason
I really hate to comment, but i will. I work for an Indian company, general quality of products tend to suffer due to a social status thing that cant be fully explained , or needs to be,in this forum. Lets just say i would never buy an India produced car or for sure fly on an airplane with any parts made there. Just an opinion, and i try never to give opinions.
China made products i would buy without a doubt.
A Chinese made amp or speakers or just about any product except for drugs,steel and others will have adequate or above quality.
ron
I really hate to comment, but i will. I work for an Indian company, general quality of products tend to suffer due to a social status thing that cant be fully explained , or needs to be,in this forum. Lets just say i would never buy an India produced car or for sure fly on an airplane with any parts made there. Just an opinion, and i try never to give opinions.
China made products i would buy without a doubt.
A Chinese made amp or speakers or just about any product except for drugs,steel and others will have adequate or above quality.
ron
Not sure if my pair were made in India, China, or even Texas. They are about 1 year old. All I know is that they sound great, and the build looks very good. I would really like to build some half Jimi Changs and compare them to my next project, Half-Chillis, with fostex 167e enabled drivers.
JimS
JimS
REC1 said:
I just got the FE167e from Madisound. It's breaking in. Thanks for the news that a Chinese- made Fostex very likely maintains a good standard. I I haven't hard mine in anything but the break box.
Thanks for the news that a Chinese- made Fostex very likely maintains a good standard.
The subject of the difference(China/India) would make a good paper. Its not my field, but i can see the difference.
China-acts/reacts as a group.
India- acts/reacts according to the social status of the highest person in the social ranking.
Fostex made in China will probably have the same or near quality as the same product from Japan (Kudos to Mr. Demming).
ron
The subject of the difference(China/India) would make a good paper. Its not my field, but i can see the difference.
China-acts/reacts as a group.
India- acts/reacts according to the social status of the highest person in the social ranking.
Fostex made in China will probably have the same or near quality as the same product from Japan (Kudos to Mr. Demming).
ron
I won't belabor this but this is about the FE167e as a subject.
The last time I bought Fostex was from Madisound over 5 years ago.
I just pulled the FE127e and the speak is not marked as to where it was made. No imprinted number either.
The last time I bought Fostex was from Madisound over 5 years ago.
I just pulled the FE127e and the speak is not marked as to where it was made. No imprinted number either.
I do not want to get too off topic here, but I am old enough to remember when "Made in Japan" was the tag on inferior products. Then made in china was considered junk, and made in japan was gold, and made in the USA was platinum. Now not much is made in the USA, made in Japan is not affordable, made in China is great, and made in India is considered inferior. I have learned over the years to try to be less biased about different things like were someone is from or where something is made, and to judge the person or the product based on tangible criteria. I am sure there is junk made everywhere and vice-versa. I love the Jordan's I bought, certainly a step-up from my B&Ws which I listened to for several years, and a lot less money Where are B&W's made?
JimS
JimS
Any country can make good or bad products - both expensive and cheap. What makes a big difference is the quality control over the production processes.
Jordan Production
Hi all,
we keep seeing these discussions about how when and where our drivers are being made and how parameters change.
First of all:
Not a single JX92 has ever been made in India.
Even if it had been, you have no idea of where the parts come from anyway. Parts can be made in Taiwan, China ando/or Europe and assembled somewhere else. This goes for any driver and it's the "secret" of each driver manufacturer, unless they want to expose it.
Like Mark is saying; any country can make good or bad drivers. Quality control and requirement is the key and we are very particular about it. We have no intention to decrease the quality of the Jordan products. We of course want to increase it.
As for parameters; yes they can change and it's only natural. On our web page under FAQ you can find a document written by Ted Jordan called the "parameter game" that can give you some ideas.
So, a suggestion for the future: let your own ears be the judge, not rumours and don't focus too much on parameters and curves.
Yes the parameters will guide you, but at the end of the day, it's what you hear that counts. On top of that, it's a matter of individual taste too.
Anders /EAD
Hi all,
we keep seeing these discussions about how when and where our drivers are being made and how parameters change.
First of all:
Not a single JX92 has ever been made in India.
Even if it had been, you have no idea of where the parts come from anyway. Parts can be made in Taiwan, China ando/or Europe and assembled somewhere else. This goes for any driver and it's the "secret" of each driver manufacturer, unless they want to expose it.
Like Mark is saying; any country can make good or bad drivers. Quality control and requirement is the key and we are very particular about it. We have no intention to decrease the quality of the Jordan products. We of course want to increase it.
As for parameters; yes they can change and it's only natural. On our web page under FAQ you can find a document written by Ted Jordan called the "parameter game" that can give you some ideas.
So, a suggestion for the future: let your own ears be the judge, not rumours and don't focus too much on parameters and curves.
Yes the parameters will guide you, but at the end of the day, it's what you hear that counts. On top of that, it's a matter of individual taste too.
Anders /EAD
True, and certainly, T/S parameters are meaningless in & of themselves, simply being a convenient set of numbers that allow a person to hit a given alignment from a given bulk via various equations. That said, and with no disrespect to the units, or anyone/thing else for that matter, inconsistant specs (which indicate variations in the drivers themselves) can affect someone trying to design a box for them based upon a specific set of published figures. Granted, the ideal is to measure one's own units, but that's not always possible, especially if it's done on behalf of someone else, as is often the case in the DIY community, and even sometimes the small business community.
BTW -you might want to tweak your www link on the forum -it doesn't work as is. When I manually added a www. it's fine though.
BTW -you might want to tweak your www link on the forum -it doesn't work as is. When I manually added a www. it's fine though.
Thx. I had missed the www, now adjusted.
As far as I know we haven't changed the specification for years, except for a typing error in the DC resistance that should be 6 ohms.
The discussion comes from various DIY 's who have made their own measures, hence the differences in measuring methods, calibrations etc.
As far as I know we haven't changed the specification for years, except for a typing error in the DC resistance that should be 6 ohms.
The discussion comes from various DIY 's who have made their own measures, hence the differences in measuring methods, calibrations etc.
REC1 said:
Except for the high-end exotica, Fostex/Foster have been made wherever Foster deems it is modt appropriate place to build a factory, As one of the oldest, and possibly the biggest driver manufacturer in the world, they have had lots of practise installing factories in emerging manufacturing nations (Taiwan, Korea -- look at where your RS 40-1197 were made) so moving factories to China was something they were well prepared to do smoothly.
dave
Andfra said:
How do you reconcile the specifications between what are on the web site and those what were independently measured (from the batch of 100 drivers in the diyAudio groupbuy). Zaph was one, i can't remember the other, but the numbers produced by both were consistent with what i measured mine at?
I can't find where Zaph has his data now, and i'm not at my main workstation to grab my data -- someone got those numbers handy?
The reason Scott was hesitant to release Jimi is because of the question, what set of data to use. A preliminary limited release of plans has been distributed, the builds will tell us whether an appropriate guess was made.
From the website
dave
BTW: my personal take on the JX92 was not positive, but the fellow that ended up with them is quite happy with them (used as a mid-tweeter on an OB)
http://diyaudioprojects.com/Drivers/JX92S/
Factory, 2 sets by John (Zaph), one with WT3, the other with Sound Easy, and 1 set by Martin King.
Factory, 2 sets by John (Zaph), one with WT3, the other with Sound Easy, and 1 set by Martin King.
I have some sympathy with Ander's opinions on the possible over-reliance on makers data. Using our ears in the analysis process is often the best, important and exciting part of any build.
Equally, we understand system builders frustrations when driver data isn't close to the actual values of the production units. Designing an enclosure on in-consistent data becomes more problematic for those using enclosure software.
Dave, your comments on Fostex production are not the actual reality. All driver brands made in China, India or any other part of Asia face significant production challenges. The skill level of workers in Asia remains low compared to other regions. Production practices are "old" by Western standards, much of the work is done by hand because labour is cheap. Production tolerances vary more than most makers will admit. We deal with these challenges by custom tooling almost every part of our component and build process.
I well remember an incident 3 years back when drivers that I'd rejected were being packed without my authorisation. I was so frustrated, I picked up a hammer and smashed 1051 productions units! Yes, I smashed the whole batch.
Is production becoming more consistent? Yes, it is improving where those makers have their own well managed production facilities, or a strong design and quality control team operating inside contracted factories.
Along with Evan Yu (our tech QC guy), I'm at a factory every time we make a tool, batch of components and/or drivers. It's the best way to push for consistent production and also learn to improve processes for future work.
I'll be back to work in the China factories next week, then on to Japan for more cone alloy work.
Kung Hei Fat Choi (Happy Chinese New Year - for the year of the Ox)
Mark.
Equally, we understand system builders frustrations when driver data isn't close to the actual values of the production units. Designing an enclosure on in-consistent data becomes more problematic for those using enclosure software.
Dave, your comments on Fostex production are not the actual reality. All driver brands made in China, India or any other part of Asia face significant production challenges. The skill level of workers in Asia remains low compared to other regions. Production practices are "old" by Western standards, much of the work is done by hand because labour is cheap. Production tolerances vary more than most makers will admit. We deal with these challenges by custom tooling almost every part of our component and build process.
I well remember an incident 3 years back when drivers that I'd rejected were being packed without my authorisation. I was so frustrated, I picked up a hammer and smashed 1051 productions units! Yes, I smashed the whole batch.
Is production becoming more consistent? Yes, it is improving where those makers have their own well managed production facilities, or a strong design and quality control team operating inside contracted factories.
Along with Evan Yu (our tech QC guy), I'm at a factory every time we make a tool, batch of components and/or drivers. It's the best way to push for consistent production and also learn to improve processes for future work.
I'll be back to work in the China factories next week, then on to Japan for more cone alloy work.
Kung Hei Fat Choi (Happy Chinese New Year - for the year of the Ox)
Mark.
I have to say I'm a bit confused.
People are testing drivers with different equipment with different calibrations and methodologies, and expecting same results.
I do not know EAD or Jordans testing methods.
WT3 and Sound Easy seem consistent, (same type of method?)
MJK vastly different than other two.
I put forward is what your seeing is not different driver specs, but different testing methods.
I highly doubt EAD or any other reputable manufacture wound let drivers go out the door with that much variance.
One other point, if there is such a difference in drivers. Why do the established designs still work for the JX92s?
People are testing drivers with different equipment with different calibrations and methodologies, and expecting same results.
I do not know EAD or Jordans testing methods.
WT3 and Sound Easy seem consistent, (same type of method?)
MJK vastly different than other two.
I put forward is what your seeing is not different driver specs, but different testing methods.
I highly doubt EAD or any other reputable manufacture wound let drivers go out the door with that much variance.
One other point, if there is such a difference in drivers. Why do the established designs still work for the JX92s?
Corloc,
I investigated if the Zaph derived T/S specs for the JX92S would work in my 'Jordan with a Ribbon MLTL' design (derived from GM's 48" MLTL version). The resultant frequency MLTL responses were within a dB or less between the E. J. Jordan specs (on their website and used for my design) and Zaph's data.
So my viewpoint is that any concern about this issue is much ado about nothing.
Jim
I investigated if the Zaph derived T/S specs for the JX92S would work in my 'Jordan with a Ribbon MLTL' design (derived from GM's 48" MLTL version). The resultant frequency MLTL responses were within a dB or less between the E. J. Jordan specs (on their website and used for my design) and Zaph's data.
So my viewpoint is that any concern about this issue is much ado about nothing.
Jim
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