D130 Recone

[clubman]

I have a older style D130. It has the "L" in the circle at the bottom of the exclamation point logo instead of JBL like my other D130's. I was wanting to come up with a 2235H for a project. Can this be reconed to a 2235H? I was reading on here it can be done but I was wondering about the VC gap? Is it worth the trouble to send it to a machine shop and have it bored out?

Also....can a 2240H be coned to a 2245H?

[John]

D-130 into 2235= NO
2240 into 2245=YES

[clubman]

if the D130 to 2235H is a no go then what is available to put back in my D130 basket?

[speakerdave]

You can put a 2235 kit into a D130 basket if it is not one of the older ones that has a narrower gap.

The 2235 in the D130 basket is the same as the 2235 kit in the 136A, 2231A or 2205A (or 2135, which I have had done), and it gives you the same thing as JBL recommends when Alnico 136's and 2231's need to be reconed.

That having been said, I think the D130F with the standard recone (now e130, I think) is worth money on the market, and I would not use that frame to make an alnico 136/2231 updated with 2235.

If you must have Alnico, find another alnico frame of that family, or, better, get a 2205H/J, 2235H/J or 2225H/J ferrite frame and have it done with a 2235 kit.

Any old Alnico woofer frame you are having reconed should be remagnetized at the same time.

David

[John]

You can put a 2235 kit into a D130 basket if it is not one of the older ones that has a narrower gap.

The 2235 in the D130 basket is the same as the 2235 kit David

A 2235 kit can fit in the D130 but it does not make it a 2235.

[John]

if the D130 to 2235H is a no go then what is available to put back in my D130 basket?

E130.

[speakerdave]

Hey, John of Manitoba, that's really pissant cropping you did to make a straw man of my post followed by your supposed correction, though I had already qualified my statement very explicitly.

Whereas this is what you said originally; it was unclear at best:

D-130 into 2235= NO
2240 into 2245=YES

And then you go on to say he can use an E130, as if I hadn't already mentioned it.


WTF?

[speakerdave]

A 2235 kit can fit in the D130 but it does not make it a 2235.

It's very close and matches the JBL recommendation for reconing 136A's and 2231A's. If he wants to do it, he will get good results. Using a correct ferrite frame, though, is better.

[clubman]

Thanks speakerdave for all the info. This D130 does have the narrow gap. That being said, will the E130 kit fit in there or will it have to be machined. I hate to just throw out this d130 frame.

[speakerdave]

. . . . This D130 does have the narrow gap . . . .

I'm surprised at this. How do you know? I understand the D130F to have a wide gap.

. . . . will the E130 kit fit in there or will it have to be machined[?] . . . .

You'll have to ask your reconer about this, I think.

[clubman]

I'm surprised at this. How do you know? I understand the D130F to have a wide gap.

It was to my understanding that the early D130s had the narrow gap. pre 1965ish. It has the foical label on the back but like I said in my first post there is a "L" in the circle of the logo instead of JBL. I think this dates the woofer to the mid 50's. Im no expert but this is what I beleave to be true.

[speakerdave]

This thread might help.

http://www.audioheritage.org/vbullet...ighlight=D130F

[clubman]

I have already tore the cone out of the basket...of course I need to measure the gap to be sure. I hated to do it...it was the original cone but it was dead. One little thing that is very cool is that someone at the factory wrote in blue pencil "130" accross the the top of the motor structure. Wonder who that was

[John]

Hey, John of Manitoba, that's really pissant cropping you did to make a straw man of my post followed by your supposed correction, though I had already qualified my statement very explicitly.

Whereas this is what you said originally; it was unclear at best:


And then you go on to say he can use an E130, as if I hadn't already mentioned it.


WTF?

Yes WTF. Nice

[John]

It's very close and matches the JBL recommendation for reconing 136A's and 2231A's. If he wants to do it, he will get good results. Using a correct ferrite frame, though, is better.

Did clubman ask what can be shoved into a D130 or did he ask if a 2235 kit will make a D130 into a 2235?

Clubman try a 2225 core with a 2235 kit if you can not find a 2235 working unit or a 2235 core.

2225 core is the exact same core as a 2235. Not close but exact.