Results 1 to 15 of 48

Thread: 076, 3105, 2410 and 2225 or e130 cabinet design

Hybrid View

Previous Post Previous Post   Next Post Next Post
  1. #1
    Member
    Join Date
    Mar 2012
    Location
    Sutter Creek, CA
    Posts
    57

    076, 3105, 2410 and 2225 or e130 cabinet design

    I'm new to the forum, so I hope this is an appropriate place for this.

    I'm a former musician and found some "odds and ends" in a couple boxes in my garage. The items include one 076, one 2403, two (still in the box) 3105 crossovers, two 2225's and two e130's. This stuff was boxed up 20 years ago and kept dry. Everything works. I'm trying to come up with a cabinet design that would use some of these components. I've looked at 4333 clones, but also checked the JBL enclosure guide found in this site's library for ideas. I'm good with woodworking and thought 2397 clones out of claro walnut would be a nice match to the 2410's. If I go with the e130's in a cabinet straight from the enclosure guide, I could put the 076/2403 in it and put the 2397/2410 horn on top. The e130 cabinet is tuned to 40hz at 3 cubic ft. The guide also has an enclosure for the 2225's, but it is also tuned to 40hz. Doesn't seem to be a gain on the low end.

    Of course I'll need crossovers for 800hz-1200hz. I was thinking of cloning some 3110/3110a's. With these crossovers and the other components, I should be able to get a fairly flat response from 40hz to over 20Khz.

    I'm just in need of a little input before putting a lot of time into cabinets. I'm happy to find this stuff, but its incomplete and raises some questions about design. I'm guessing that's why I put it all in the boxes to begin with.

    Here's a link to the 2397 design:
    http://www.audioheritage.org/vbullet...ll=1#post48096

    JBl spec sheet for 2397 (measurements slightly different from above link)
    http://www.lansingheritage.org/image...2397/page2.jpg

    And here's the link to the Enclosure Guide with dimensions, tuning and other helpful information:
    http://www.jblpro.com/catalog/suppor...=219&doctype=3
    Last edited by GoldcountryJim; 03-16-2012 at 09:25 PM. Reason: Added Links

  2. #2
    Member
    Join Date
    Mar 2012
    Location
    Sutter Creek, CA
    Posts
    57

    Need to know low frequency response of e130

    I'm trying to decide whether to go with the e130 or 2225 for low end. I can't find much on the response curve of the e130, so I'm hoping someone can help. I know it is a descendant of the D130 hifi speaker, with a slightly larger gap, 1.35 t magnet and enhanced voice coil structure (kapton?)

    Here's what I have dug up on the 2225:

    The response curve for the 2225 can be usable down to 33-35hz using a 5 cubic ft tuned port enclosure with a 25 square inch port. Here's the link to the specification: http://www.jblpro.com/pub/obsolete/2225hj.pdf

    The JBL pro 4647 enclosure appears to match this claim, although it appears to be about 5 db down at that point. Here's the link: http://www.jblpro.com/pub/obsolete/4647.pdf

    There's a 5 cubic ft design in the kit plans in this site's library. This is a home use enclosure design, but I'm guessing the response would be similar to the 4647. http://www.lansingheritage.org/html/.../1970s-kit.htm Alternatively, I could just use the 4647 spec as a basis for the cabinet.

    Now, I need something for the e130 to compare. Does anyone have response information on the e130?

  3. #3
    Senior Member
    Join Date
    Aug 2010
    Location
    Jättendal (Giant Valley), Sweden
    Posts
    763
    The E130 is an instrument speaker. It supposedly sounds fantastic in midrange, but will not give you lots of bass. I would use both 2225 (below 300 Hz) and E130 (above 300 Hz). The problem is filtering, at 300 Hz the filter will be very large and expensive. I would go active, and use the passive filter above. If you use E130 above 300, the box design for it is not critical.

    You will need to check the 2225. There is a piece of foam in the ventilation protecting the voice coil from bugs. The foam might have become bad, and could ruin the coil.

    If you got space go for jbl 4530 cabinet with 2225 and 4560 cabinet with E130.

    Best regards

    Mårten

  4. #4
    Member
    Join Date
    Mar 2012
    Location
    Sutter Creek, CA
    Posts
    57

    Gotta' keep it smaller

    Thanks Marten,

    I like the idea of 4530 and 4560's, but its not practical in the available space. I had four 4560's with 2220's in them, back when I was a working musician. They put out great mids!

    Truth is, that I'm probably limited to choosing between the woofers. I think you are right about using the 2225's for low end. The E130's are great in the mids, which is why I was hoping to get more information on them. The spec has them at 50hz to 6000hz and 105db 1w 1m (@2Khz?). http://www.jblpro.com/pub/components/eseries.pdf I should probably believe the spec and what you are saying. What was throwing me is an audio clip of an E130 used for bass, which puts it down to about 41hz.

    I'm torn between active and passive x-overs for the low/mid split. Passive is a cheaper entry point. That's why the 3110's were mentioned. I just need to locate a schematic and parts list.

    Appreciate the input.

  5. #5
    Senior Member
    Join Date
    Aug 2010
    Location
    Jättendal (Giant Valley), Sweden
    Posts
    763
    If you can add a smaller midrange (2118?), keep the 2225. Maybe trade the E130?

    Otherwise keep the E130. You can EQ the bass, but not the midrange :-). E130 is very close to 2220, check the thiele-small parameters.

    Maybe trade both of them for a pair of E145? Very good midbass and midrange.

    There are more experienced members on the forum, but at least you got a response :-)

  6. #6
    Member
    Join Date
    Mar 2012
    Location
    Sutter Creek, CA
    Posts
    57

    Still thinking about the E130's

    Thanks for the reply Marten.

    I checked then 2225's and they are in really good shape. Looks like they were reconed with original JBL parts just before going into storage.

    Using EQ on the bass is probably a good idea to extend the range (may draw some flack from purists for saying this). I don't plan to exceed 30 watts RMS, so the cones shouldn't get over-extended. Whether I could get away with this with just the E130. . . . X-max is pretty limited. Probably safe at this wattage.

    I found this clip on youtube of E130's and 2420's. http://www.youtube.com/watch?v=RHXVJ6B4qWM It's a poor demo song, as it doesn't have much low end, but kinda' looks good! The units are very directional too.

    Thanks again!

    Jim

  7. #7
    Junior Member
    Join Date
    Apr 2012
    Location
    California
    Posts
    5
    Well, it was 1974 a mere 38 years ago. I didn't remember the 2 and 4 woofer options. wow!
    Attached Images Attached Images      

  8. #8
    Member
    Join Date
    Mar 2012
    Location
    Sutter Creek, CA
    Posts
    57
    Wow! Those are some old plans! The bracing is interesting and very much along the lines of what I would add to my cabinets. The tuning of the enclosures in your plans is interesting too. The cabinets are tuned lower than I expected and, if I'm reading this correctly, the resonance that you are supposed to perceive is higher. Did you put the 2405's off center? I remember reading that high frequency drivers are often placed to maximize separation between channels. I am planning the right and left cabinets to be mirror images.

    I should clarify that my need to keep the cabinet size limited is not driven by floor space, but rather, my spouse's concern that the speakers will become the focal point of the room. I have a Sunn 215BH bass cabinet (JBL loaded) in the garage and she doesn't want anything that size, or even close, in the house. I think she's OK with the 4647 size, if its veneered and looks like a home speaker. To keep everyone happy I'll have one-off cabinets based on the the 4647. I knew there would be compromises, for engineering and domestic reasons.

    I'm hoping to post some drawings soon.

  9. #9
    Senior Member
    Join Date
    Aug 2010
    Location
    Jättendal (Giant Valley), Sweden
    Posts
    763
    Quote Originally Posted by GoldcountryJim View Post
    I should clarify that my need to keep the cabinet size limited is not driven by floor space, but rather, my spouse's concern that the speakers will become the focal point of the room.
    Maybe you can get your wife to pay for another pair of 2225 to make isobaric alignments?

  10. #10
    Member
    Join Date
    Mar 2012
    Location
    Sutter Creek, CA
    Posts
    57
    The isobaric concept lost favor when the need for a second set of 2225's came up. This project started because I needed to clean the garage. No new speakers!

    I'm now looking at the cabinet materials. Plywood with with cherry veneer is available and I'm wondering if that is better than particle board. Baltic birch would be preferable. Does anyone know if plywood is an acceptable alternative to the particle board?

  11. #11
    Senior Member
    Join Date
    Aug 2010
    Location
    Jättendal (Giant Valley), Sweden
    Posts
    763

    Does Dolly Parton sleep on her back?

    Birch plywood is probably the best material you can find.

    Check out Some photos of my 4345 clones. If you need inspiration :-). You can come quite close with an ordinary router.

    If your spouse has opinions about the size of your speakers, you can get deeper bass with the same box size. Since the 2225 is a pro driver with strong motor and high VAS you will need a big cabinet to get deep bass.

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Cabinet design for 2245H
    By baldrick in forum Lansing Product DIY Forum
    Replies: 29
    Last Post: 11-09-2010, 10:11 AM
  2. Help Critique My Cabinet Design, Please!
    By Loren42 in forum Lansing Product DIY Forum
    Replies: 12
    Last Post: 04-02-2009, 07:24 AM
  3. feedback on cabinet design for 2235
    By frank23 in forum Lansing Product DIY Forum
    Replies: 15
    Last Post: 01-16-2006, 01:43 PM
  4. Cabinet Design?
    By Dabido in forum Lansing Product Technical Help
    Replies: 2
    Last Post: 06-23-2005, 12:04 PM

Posting Permissions

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