Results 1 to 15 of 15

Thread: Make an 2231A out of 2220A ??

  1. #1
    Senior Member Guido's Avatar
    Join Date
    Apr 2003
    Location
    Germany
    Posts
    2,503

    Make an 2231A out of 2220A ??

    Hello JBL Experts!

    Can I build an 2231A with reconing an 2220A?

    Is it then the same quality then the original 2231A?

    Tank you

    Greetings from Germany

  2. #2
    Obsolete
    Join Date
    Apr 2003
    Location
    NLA
    Posts
    12,193

    Re: Make an 2231A out of 2220A ??

    Nope, sorry, wrong basket. 130A/2220A no good for anything but 130A/2220A. Can't build a 2231 anymore anyway as the C8R2231 has been discontinued and replaced with the C8R2235. It's an improvement with a much better suspension.

    Here are the baskets you can use:

    D130
    K130
    K140
    136
    2135
    2205
    2225
    2231
    2235

    "4343 monitor is still high end, after 20 years!"

    Indeed!
    Last edited by 4313B; 05-06-2003 at 10:49 AM.

  3. #3
    Senior Member Guido's Avatar
    Join Date
    Apr 2003
    Location
    Germany
    Posts
    2,503

    Thank You Giskard

    With that much choice i should be able to make it!

  4. #4
    Senior Member GordonW's Avatar
    Join Date
    May 2003
    Location
    Marietta/Moultrie GA USA
    Posts
    1,455
    So Giskard, you're saying that it's actually possible to recone a D130 as a 2235 and vice-versa? Man, that's kinda mind-blowing, in a sense...

    Regards,
    Gordon.
    opens up all sorts of possibilities for helping a friend of mine re-load a set of Viscount C36 cabinets... he has 077s, all he needs is to make a pair of D130s, and find a pair of N7000s...

  5. #5
    Obsolete
    Join Date
    Apr 2003
    Location
    NLA
    Posts
    12,193
    Yeah, if I remember correctly the D140 is the one that may not work (gap may be too small). In any case, always check the gap before reconing. SOP.

  6. #6
    Senior Member GordonW's Avatar
    Join Date
    May 2003
    Location
    Marietta/Moultrie GA USA
    Posts
    1,455
    So, if you were trying to duplicate an EARLY D130 (1948-1959?), then the D140 basket would be possibly more "appropriate"... but if you're trying to do a later D130 (ie, the Harvey Gerst-Dick Dale/D130F, and afterwards, version with the bigger gap), then don't use the D140?

    Regards,
    Gordon.

  7. #7
    Obsolete
    Join Date
    Apr 2003
    Location
    NLA
    Posts
    12,193

  8. #8
    Senior Member GordonW's Avatar
    Join Date
    May 2003
    Location
    Marietta/Moultrie GA USA
    Posts
    1,455
    Appreciate it, Giskard! That's a document I've been needing for a while...

    Regards,
    Gordon.
    now we're cookin' with gas!

  9. #9
    John Y.
    Guest
    Giskard (in particular, but others please chime in),

    From this and past discussions, I am to understand that a D130 can be reconed to a 2235H. If this is true, should the 51629 Mass Ring be installed?

    What would the effect be of not having the SFG and flux stabilizing ring? Maybe best to get a real 3325H and use the D130 for something else (like a guitar speaker)?

    Thanks, John

  10. #10
    Obsolete
    Join Date
    Apr 2003
    Location
    NLA
    Posts
    12,193
    Hi John

    "From this and past discussions, I am to understand that a D130 can be reconed to a 2235H."

    Technically yes, always measure the gap first. Some very old drivers have gaps which are too small and will have to be sent to JBL for modification.

    "If this is true, should the 51629 Mass Ring be installed?"

    Yes.

    "What would the effect be of not having the SFG and flux stabilizing ring?"

    Same as it's always been. You can read the advantages SFG ferrite and the flux stabilizing ring have over the older alnico baskets on JBL's website. ("Technical Notes Volume 1, Number 9 - Distortion and Power Compression in Low-Frequency Transducers")

    "Maybe best to get a real 3325H and use the D130 for something else (like a guitar speaker)?"

    Well, I personally prefer the advantages SFG ferrite structures offer but I'm not going to get into the alnico versus SFG ferrite debate again. Should someone use a 136A or 2231A as a guitar speaker because they have alnico assemblies instead of the 136H or 2231H SFG ferrite assemblies? What about the D130H? That's just an SFG ferrite version of the alnico D130...

  11. #11
    John Y.
    Guest
    Giskard,

    Can't quibble with your answer. I do not have a particular bias toward the alnicos. My problem is that I have a D130 basket with a very poorly installed 140 (I think) cone. This was my original D130 from my C37 system that I built in 1955. When I went on to L100's, I let my son use the C37/D130 and he proceeded to blow the original (and probably many recones) with the aid of a rock group. You can tell that the cabinet was used standing on end, and is pretty badly scratched, but can be restored by re-veneering.

    I want to restore at least the enclosure for purely sentimental reasons. I plan to use it by modifying it into a subwoofer (additional bracing, maybe internal layer of half inch ply), and I think it would be neat to use the D130 reconed to a 2235 for that purpose. More about this idea in a separate post, later.

    Thanks for your input, John

  12. #12
    jimbu
    Guest

    JBL E140 to 2226H

    Hello my Name is Jacob. I have a question about reconing JBL E140 with recone kit 2226H. Is it possible? Does the kit fit the basket? Thanks a lot.

  13. #13
    Senior Member edgewound's Avatar
    Join Date
    Jun 2005
    Location
    Southern California
    Posts
    2,776
    Quote Originally Posted by jimbu View Post
    Hello my Name is Jacob. I have a question about reconing JBL E140 with recone kit 2226H. Is it possible? Does the kit fit the basket? Thanks a lot.
    No, Jacob...that can't be done.

    The two speakers are totally different, and recone kits are not interchangeable.

    The E140 can be reconed with a 2225 kit but the low end will be slighty different...a little less extension... with a slight boost to midrange efficiency due to the bigger magnet of the E140 vs. 2225.
    Edgewound...JBL Pro Authorized...since 1988
    Upland Loudspeaker Service, Upland, CA

  14. #14
    Senior Member GordonW's Avatar
    Join Date
    May 2003
    Location
    Marietta/Moultrie GA USA
    Posts
    1,455
    Actually, given past experience with 2226s and 2225s, a 2225 (ie, the 2226 seems to have more midrange and the 2225 more bottom, ostensibly because of the improved magnet flux field in the 2226 increasing effective motor strength WRT the 2225), I would speculate that an E140 basket with a 2225 kit might sound MORE like a 2226 than the same kit in a 2225 basket... by the same mechanism.

    I'm not taking bets here... just noting patterns from past experience, that lead to a likely explanation...

    Regards,
    Gordon.

  15. #15
    Senior Member bldozier's Avatar
    Join Date
    Jun 2014
    Location
    mount kisco
    Posts
    815
    D130 or d130F for us beginners.
    http://www.audioheritage.org/vbullet...p/t-22095.html

    This stated the d130 has a norrow vc, somtime in mid to late 1960s
    D130f fender having widened the vc.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. OK make 2012 out of a LE10 was a bad idea, but if...
    By Flodstroem in forum Lansing Product Technical Help
    Replies: 4
    Last Post: 05-19-2004, 03:13 PM
  2. Did Altec make a 10" pancake speaker?.
    By LOUIS in forum Lansing Product General Information
    Replies: 0
    Last Post: 07-24-2003, 06:55 PM
  3. 2220a Top Plate Thickness ?
    By Earl K in forum Lansing Product Technical Help
    Replies: 0
    Last Post: 05-02-2003, 09:14 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •