Enclosure for Jordan JX150

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#41
DIAR said:
How do I figure out how wide by baffle should be. I know Ted Jordan recommends as wide baffle as possible (e.g. IB). I would much rather have as narrow baffle as possible.
:smash:

If I use e.g. Tangban W3-871S linear array with JX150, should I choose narrow or wide baffle or possibly a curver baffle to minimize corner diffraction. Do I get better imaging with narrow baffle or is that only a myth. A wider baffle enhances lower midrange but I don't know if it is a good or a bad thing.
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Like you, I like narrow baffles. These also have higer WAF. I kind of like the Theil type baffles. Don't know whether they're easy to DIY or not.

There was also someone that suggested Nautilus shaped baffle which also seems technically good. These would come out wider but would have a more artistic styling to it.

Just some ideas. I might try the Nautilus shape some day.
 
#43
Thiel. Sorry for the spelling.
 

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#45
DIAR said:
Thiel, I thought so 🙂

I printed out some Thiel technical papers. I'll have to see if they have something new to offer. 😎

Does anyone know any good internet sites about liear arrays. I suppose that it is essential that baffle is identical for all drivers? I mean can make a baffle which is wide at the bottom and narrow on the top...
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The reason why many baffles are oddly shapped or have drivers placed at different locations is that you don't want the wave front to reach an edge at the same time and suddenly expand into open air. So you either round edges (large R as possible) or position drivers/shape baffle such that a wave front reaches the edge through a distance.

There was a thread that referred to a site that talked about driver spacing in an array, I will post it if I find it.
 
#47
DIAR said:
Here's an example. If the front baffle is shaped differently around the drivers, will it destroy the whole idea. In this kind of enclosure every driver will sound different.
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Technically they would be different. But there are many factors that would result in different sounding drivers.

1. Interaction of the wave from one driver on the other would result in the center drivers and the end drivers being different.

2. If the line array were in one sealed cabinet. The location in the cabinet would be effected by any standing waves present if damping is not good enough.

3. The baffle is not perfectly ridgid, so the natural vibration modes at different locations on the baffle would effect sound.

4. Baffle shape and the varying distance to any edge would also create sound differences.

It would be ineteresting to know which factors would have more significant influence.
 
#48
Good points! I hadn't thought of any of those. 🙂
I'm suprised there is not much info on linear arrays in the internet. Atleast I'm not able to find almost any information :bawling:

I also printed out about 200 pages of Martin J. King's quarter wave theory. I would like to design the cabinet for JX150 myself. Both designs seen here are a bit tricky to use in the speaker configuration I have in mind. I'm also fed up with my monkey see, monkey do kind of DIYing :xeye:
 
#53
DIAR said:
I desided to take the drivers back to store :bawling: . I measured the impedance and all three drivers had a different Fs. Lowest was 75 Hz and highest well over 100 Hz. Re was 4.9, 5.0 and 5.7 ohms. :cannotbe:
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😱 :bigeyes: :xeye:

Hope you get better ones at the other store. I accidentally touched my JX125 with a screwdriver once, and it left a mark to remind me forever of my carelessness.:cannotbe:
 
#58
Jordan JX125 JX150 wanted

Thanks all,but they really do need to be the Jordans.I think the Bandors are very good and have experience with them, but find the Jordans much more dynamic and they also have a suspension that keeps the Q from moving far less with programme volume than other drivers.
So, anyone got any of these drivers? Pretty Please?
Steve
 
#59
Jordan JX150

I have what I think are three JX125 or 150's drive units together with a number of JX51. 2" driver, 8 from memory. If you would like more info on either of the units let me know. I built a line array in 1993 and had to send one of the JX125/150's back to Ted due to child damage, I never got round to getting it back from him.
Let me know
 
#60
Re: Jordan JX125 JX150 wanted

mrsmerton said:
Thanks all,but they really do need to be the Jordans.I think the Bandors are very good and have experience with them, but find the Jordans much more dynamic and they also have a suspension that keeps the Q from moving far less with programme volume than other drivers.
So, anyone got any of these drivers? Pretty Please?
Steve
Click to expand...

I'm looking for JX62.
 
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