2425H suitability?

[Alien_Shore]

I was looking through my closet the other day and found a 2425H driver.
How suitable would this be for a hi fi application?

[1audiohack]

JBL used them in the 4430 and their flagship of the day 4435 studio monitors so I would say "quite suitable."

[Alien_Shore]

Thanks for the tip. A pair (with 2344 horns) came up this week on fleabay and were gone by the time I got home from work to take a closer look! Hot little items, apparently! I'll keep looking, I suppose these things come up pretty often.

For all you JBL horn experts, is the 2344 better/worse than the 2370 for home hi/fi application?

[1audiohack]

Better I would say and I have both. There are far worse horns than 2370's however. Sometimes you can find 2370's for almost free, 2344's are showing up less often and command higher and higher prices it seems.

[Ruediger]

... as the 2344 is not so easy to crossover prperly.

Ruediger

[toddalin]

But they do show up.

http://orangecounty.craigslist.org/msg/3183816073.html

[ivica]

Better I would say and I have both. There are far worse horns than 2370's however. Sometimes you can find 2370's for almost free, 2344's are showing up less often and command higher and higher prices it seems.

Please, some words in comparison these two with the combo 2312+2308

Regards,
Ivica

[DogBox]

There are far worse horns than 2370's however...

So, if you weren't able to use 2425's; how would things 'be' using a 2470/2307/2308 set up? Or the 2470 and 2312/2308 as mentioned??
With drivers getting harder to get, how do you not denegrate the sound when you can't get the originals???

DogBox

[1audiohack]

Hi ivica and DogBox;

I have never had 2312's or 2470's.

I still have one 2307 and a pair of 2311's and some 2308's but it's been so long since I had them in a system I couldn't tell you anything of value other than when I first got a pair of 2344's I thought them to be clear winners over the 2425/2307-2308 combinations in my living room. But as has been noted the electical integration of the 2344 is much more involved. I want to take a voltage drive measurment of all the passbands of my 4435's to see if I can improve the sound of the other 2344's that I have elsewhere. When I do that I will be sure to post the measurements. It is a ways back on the project list however.

I will say that I still like the 2311/2441-2308 combination with aluminum diaphragms and talk about an easy implementation, all by themselves they are quite well behaved up to 15-16kHz. I think you would be less likely to miss a tweeter with this combination than with a 2470/2312 or 2470/2307 which if I remember right pretty much shut off at about 8 kHz or so. That makes for a pretty narrow range combination as I personally wouldn't use a 2307 below 1200Hz.

I don't know if any of that helps, probably not.

DogBox are even 2425-2426's hard to come by there?

One thing I have been thinking about is making 1.5" entry replacement throats in order to use 435Al's on the 2344's. I just need two of me.

[ivica]

Hi ivica and DogBox;

I have never had 2312's or 2470's.

I still have one 2307 and a pair of 2311's and some 2308's but it's been so long since I had them in a system I couldn't tell you anything of value other than when I first got a pair of 2344's I thought them to be clear winners over the 2425/2307-2308 combinations in my living room. But as has been noted the electical integration of the 2344 is much more involved. I want to take a voltage drive measurment of all the passbands of my 4435's to see if I can improve the sound of the other 2344's that I have elsewhere. When I do that I will be sure to post the measurements. It is a ways back on the project list however.

I will say that I still like the 2311/2441-2308 combination with aluminum diaphragms and talk about an easy implementation, all by themselves they are quite well behaved up to 15-16kHz. I think you would be less likely to miss a tweeter with this combination than with a 2470/2312 or 2470/2307 which if I remember right pretty much shut off at about 8 kHz or so. That makes for a pretty narrow range combination as I personally wouldn't use a 2307 below 1200Hz.

I don't know if any of that helps, probably not.




......

Many thanks 1audiohack, for your comments about 2311+2308 with 2441-AL
I have 2421-TI with 2312+2308, in 156L box with 2235 and 2405 combination, but I want to put 2450-TI with 2311+2308 instead, my be one day E110 as mid-bass, so any experience with such combination are well-come.
Parallel with that I want to make horn based on H66000/H9900/H4365 experience that are 2344 followers , each , on my opinion, are 'bi-radial' horns with the diffraction slot in the horn throat, but as I have 'old school' driver with built-in 3-inch 'slow-flare' horn I am waring about what kind of network 'compensations' has to be implemented in order to get usable results.

Best Regards
Ivica

[DogBox]

Hi Ivica & 1audiohack,
Unfortunately i'm not far enough ahead to progress to 2" throat drivers as Ivica is.. I'm a "work still in progress..!"
Scraping what parts I can afford [& then, even when I cant afford- what the heck..!] to do a 4343/4344 build.

I posed my question in a 'round-about-sort-of-way' to try and find out if I could use the 2470 "with" phenolic diaphragm and
still top it with the 2405's? ..or, eventually do a diaphragm change and put in a 2420 dia. in the 2470..?
I have some very sad 2225's with who knows what cones in them, I can redo with 2235's.

So as we continually try and save up, for the 2405's and however I can assemble something for the 10" [E110-reconed 2121,or
something, 2123's- although I hear they aren't such a good idea as a replacement...?] is where we're at!

I really enjoy the information and extensive knowledge from this forum/site- you guys [& gals!] are something else!!!
Thanks!
DogBox

[1audiohack]

Hi DogBox;

I see no reason you couldn't use the 2470 with a 2405. I've heard phenolic drivers that sound great, I just have never knowingly heard 2470's.

So, what do you have in the way of parts for this project?

Barry.

[ivica]

Hi Ivica & 1audiohack,
Unfortunately i'm not far enough ahead to progress to 2" throat drivers as Ivica is.. I'm a "work still in progress..!"
Scraping what parts I can afford [& then, even when I cant afford- what the heck..!] to do a 4343/4344 build.

I posed my question in a 'round-about-sort-of-way' to try and find out if I could use the 2470 "with" phenolic diaphragm and
still top it with the 2405's? ..or, eventually do a diaphragm change and put in a 2420 dia. in the 2470..?
I have some very sad 2225's with who knows what cones in them, I can redo with 2235's.

So as we continually try and save up, for the 2405's and however I can assemble something for the 10" [E110-reconed 2121,or
something, 2123's- although I hear they aren't such a good idea as a replacement...?] is where we're at!

I really enjoy the information and extensive knowledge from this forum/site- you guys [& gals!] are something else!!!
Thanks!
DogBox

Hi DogBox,

I think that mentioned 2470 with 2312 or 2307 with 2308 lenses, would sound nice with 2405. My be some small adjustment of the "low-pass" network section for 2470 (around 8kHz) can compensate possible less Hi-frequency response, but 2405 is suggested to be used over 8kHz.
Regards
Ivica

[DogBox]

Well, my parts list is taking for ages to grow; however, we have&nbsp;a pair of&nbsp;2470 with phenolic's as mentioned, two pairs of 2307, a set of 2308 lenses and&nbsp;3 &amp; 3/4 2555's with dodgy recones... I say "&amp; 3/4" as one of the four has its spider only partly glued to the magnet assembly and <br>makes a weird noise when played through. These are [well, at least "two"] all heading for 2235 recones when finances allow.&nbsp;<br>Be nice to have a closet like Alien_Shore and be able to find stuff like compression drivers!!! <img id="vB_Editor_001_smilie_78" title="Crying" border="0" alt="" src="http://www.audioheritage.org/vbulletin/images/smilies/cryingsmiley.gif">&nbsp; <br>Ah well, the 4343/4344 will get there eventually. <br>I used to live next door to a guy that first introduced me 'to' JBL, although I had always been interested in the speaker building craft... <br>He built his own [and was selling them] design based on the 4350 but with only "one" 15" low; 12" mid; 2" compression high and 2405 slots up top, in a cabinet a bit wider than the 4343. They did sound spectacular though!&nbsp; I was thinking of trying to re-do that design until I saw the <br>4343 and then found the 4344... AND you guys! Info galore! Love it!!!&nbsp;<img id="vB_Editor_001_smilie_4" title="Big Grin" border="0" alt="" src="http://www.audioheritage.org/vbulletin/images/smilies/biggrin.gif">&nbsp;<br><br>DogBox<br><br>Steve

[DogBox]

I hope you can make something out of that last post I lost my internet connection looks great as my only fourth reply

Steve