E140 = 2225???

[toddalin]

Still looking for a fourth woofer for recone as a 2235. Came across an E140 basket on ebay. Seller says "recone it as a 2225..." In past postings, the E140 was not on Mr. Widget's list of 2235 recone baskets, yet the 2225 is. Can an E140 also be redone as a 2235?

http://cgi.ebay.com/JBL-E140-FRAME-1...QQcmdZViewItem

Also, can anyone verify that this second basket pic is a K140 that could be redone as a 2235? And, do you see any obvious flaws in the basket that could preclude it's recone?

Thanks again

http://cgi.ebay.com/JBL-K140-FRAME-A...QQcmdZViewItem

[Lancer]

One more time...

and this time if someone else posts saying "you can't hear the difference" they will be permanently banned from this site.

Two different cores, stock 2225/2235 1.2 T*m core and E130/E140 1.35 T*m core.

Red signifies changes from stock 2234H and 2235H.

[Lancer]

The 1.35 T*m assembly (E140 for example) uses the 7/8" thick magnet and the 0.280" top plate.

The 1.20 T*m assembly (2235H for example) uses the 3/4" thick magnet and the 0.280" top plate.

The 1.15 T*m assembly (2220H for example) uses the 3/4" thick magnet and the 0.350" top plate.

The 0.95 T*m assembly (2215H for example) uses the 7/8" thick magnet and the 0.600" top plate.

The 12-inch E120 also has the thicker E130/E140 magnet so when reconed as a 121H, 2202H, or 2204H there will be a difference (124A/124H/2203/2203H kit is unfortunately NLA).

[Ian Mackenzie]

One more time...

and this time if someone else posts saying "you can't hear the difference" they will be permanently banned from this site.

.

Yes it annoying, the last thing we want is hyprid wonna be's.

Modelling this is BassBox its obvious. If they had any brains at all they would have done this before opening their big traps.

[Lancer]

Opening their bass traps? Huh?



BTW toddalin, thanks for bringing this up again. It's been the topic of several posts lately. Robh3606 has suggested this information be placed in the Technical Reference Section.

[toddalin]

Opening their bass traps? Huh?



BTW toddalin, thanks for bringing this up again. It's been the topic of several posts lately. Robh3606 has suggested this information be placed in the Technical Reference Section.

You didn't answer the question and only added to the confusion???

[Robh3606]

Here we go. This should answer the guestion,

No not without a clearly audible difference between the 2 baskets due to the higher flux in the E series baskets see below.

Rob

[Lancer]

You didn't answer the question and only added to the confusion???

You've got to be fucking kidding me... if you're confused by my posts then you need to find another hobby...

And... I've answered this question numerous times in numerous ways... it obviously didn't do any good.

[boputnam]

...and this time if someone else posts saying "you can't hear the difference" they will be permanently banned from this site.

Bingo.

Hey Don - we should make this a codicil to posting here.

We cannot/should not endorse, nor encourage non-factory bullshit. Period.

[Zilch]

We cannot/should not endorse, nor encourage non-factory bullshit. Period.

The factory cautions regarding the altered performance. E140's reconed as 2235H's may, in fact, be the optimum choice in certain applications. Everybody's on notice that they're different. In my view, the factory frames it as a customer option.

Fact is, 2235H's are becoming harder to come by. Thrashed E140's and 2225's are being replaced with 2226H, and are thus more common. With 2235 recone kits still reasonably priced, it's reasonable to consider making 2235H's, or, in the case of E140's, hybrids out of 'em.

If the E140 hybrid produces more or better midbass than the "real" 2235H (not sayin' it does, yet, mind y'all), then trading off some of the low bass response may be a reasonable compromise.

I'll load a pair of each into 4430's and we can A/B 'em.

For the record, however, I do believe that shootin' WD-40 into pots or L-Pads is a very BAD idea....

[boputnam]

The factory cautions regarding the altered performance.

And many forumites may not have access to, nor knowledge of, that information, gentle reader...

[Robh3606]

Hello Toddalin

Can you do a side shot or measure the top plate thickness. Not sure if that's the clincher or not but that certainly could be useful information.


Hey Zilch

"If the E140 hybrid produces more or better midbass than the "real" 2235H (not sayin' it does, yet, mind y'all), then trading off some of the low bass response may be a reasonable compromise....'

Use a 2225 with the 2235 kit and leave out the mass ring. Now you have a 2234 which gets you almost just that with higher sensitivity to boot. Problem is with hybrids you don't know what you have and the more "hybrids" the more corrupted the drivers will be down the line. Sure you are free to do what you want but why screw around when there are other options that will get you what you want and still keep the drivers stock.

Rob

[Robh3606]

Hey Bo

Here's one for you. When I went to get an E-145 frame reconned I had the guy behind the counter tell me to use a 2225 kit. I was Huh???? What about the frame extension and the thicker top plate. "Oh well the frame extension comes off and the it will work just fine" Yeah but then it won't be an E-145 " You won't be able to tell the difference" Hows that for scarry. Wonder how many other's fell for it???

Rob

[boputnam]

My point should not be mooted by some sophmoric sword-dueling smilies (re: this -> which Zilch edited out of his post, after my reply. FWIW, I loath the post-facto editing capabilities here, you weenies... )

WhenEVER something is posted that is opinion we do ourselves and our tribe the duty of posting it as such. Clearly. Too easily things posted here by long-time (or other...) contributors can be mis-construed as JBL-accepted, JBL-endorsed practice.

That is all. Carry on...

[Zilch]

Black = 2235H
Orchid = E140 w/2235 cone
Tangerine = 2234H

I'm keepin' my 30 Hz, thank you....