Results 1 to 10 of 10

Thread: 2380/2447

  1. #1
    Member
    Join Date
    Feb 2012
    Location
    Ladysmith BC Canada
    Posts
    45

    2380/2447

    Does anybody know if there is an adapter available to fit the 2380 horn (2 in) to a 2447 driver (1.5 in)
    I have 2447s with an unidentified horn and was also wondering if the 2380 is a good choice for home stereo use?
    I would like to use it in system without a tweeter so I need goods high frequency extension.
    Is a 2382a a better horn or are there better alternatives?
    Thanks

  2. #2
    Dang. Amateur speakerdave's Avatar
    Join Date
    May 2003
    Location
    Northern California
    Posts
    3,734
    JBL made a 1 1/2 inch similar to the 28xx series. I think it was called the 2381 and was used in many of the sr47xx speakers. It was never marketed as component, but for a long time was available as a part on the horn parts list. You might check that. Whether this horn is suitable for home hi fi is another question.
    "Audio is filled with dangerous amateurs." --- Tim de Paravicini

  3. #3
    Senior Member
    Join Date
    Aug 2010
    Location
    Jättendal (Giant Valley), Sweden
    Posts
    763

  4. #4
    Junior Member Turner's Avatar
    Join Date
    Dec 2012
    Location
    _____
    Posts
    11
    Try to ID the horns you already have. Hopefully they're the proper 235x series, which are designed for the 2447. See JBL Technical Note, Volume 1, Number 21.
    http://www.jblpro.com/pub/technote/tn_v1n21.pdf

  5. #5
    Member
    Join Date
    Feb 2012
    Location
    Ladysmith BC Canada
    Posts
    45

    2447 Horns

    Thanks for the info

    Turner
    I don't think they are OEM JBL as they are aluminum castings and the mounting stud holes are re drilled as they didn't really line up with the studs on the drivers.
    They actually look like a larger version of the 2370 but aluminum with similar reinforcing ribs on the large surfaces on the outside of the horn.
    The ribs stop well short of the driver mounting flangeName:  DSCN0003.jpg
Views: 1951
Size:  81.1 KBName:  DSCN0002.jpg
Views: 2118
Size:  97.6 KBName:  DSCN0001.jpg
Views: 2147
Size:  73.8 KB
    They don't really look like the JBL horns for the 2447 that I've found in the library section. (2352)
    I thought that the OEM horns for the 2447 were fiberglass.
    Herewith some pics.

  6. #6
    RE: Member when? subwoof's Avatar
    Join Date
    Aug 2003
    Location
    fingerlakes region, NY
    Posts
    1,899

    aftermarket

    not jbl. looks like on of the "image" or Taiwanese knockoffs.

  7. #7
    Senior Member
    Join Date
    Apr 2012
    Location
    Houston
    Posts
    766
    Those certainly are not a 2380 knock off. Its not even a cd horn. Maybe exponential. But not cd, no diffraction slot.

    I bet they wouldn't be too bad for home use. P audio makes a 1.5 to 2 inch if you don't have any luck finding the jbl adapter.

  8. #8
    Member
    Join Date
    Feb 2012
    Location
    Ladysmith BC Canada
    Posts
    45

    Stereo Lab Horns

    Thanks
    I know it's not a 2380, I found some of those on EBay and was wondering if it would work on the 2447 with an adapter.
    Hence the adapter question.
    I was wondering if anybody can identify the horns in the pictures.
    Does anyone have experience with horns from Stereo Lab in Germany
    www.stereolab.de
    Look up spheric wave tractrix horns also in 1.5" for the 2447.
    Philip Newell recommends a axi-symmetric horn (round) as he commissioned research that found that round horns sound less like horns and more like dynamic loudspeakers.
    Also the horn had to be kept short or it would start to change in sound character.
    See "The Sound of Midrange Horns for Studio Monitors" Philip Newell and Keith Holland
    He actually produced it as well (Reflexion Arts) but I can't find out if it's for sale or not.

    Bloys

  9. #9
    Senior Member
    Join Date
    Apr 2012
    Location
    Houston
    Posts
    766
    I don't have any personal experience with stereolab horns. But I've heard nothing but good stuff about them. Do yourself a favor a check out azurahorns too. There very good too and at a great price.

    nick

  10. #10
    Senior Member
    Join Date
    Aug 2010
    Location
    Jättendal (Giant Valley), Sweden
    Posts
    763
    Check out Auto-tech horns as well. Especially their LeCleach (JMLC) horns. I have seen elliptical (EJMLC) horns from Auto-tech, but these are not on this site.

    Round horns do beam some, be prepared to have a narrow sweet spot and maybe adjust the filter.

    Tractrix horns works better if mounted on a baffle.

Thread Information

Users Browsing this Thread

There are currently 2 users browsing this thread. (0 members and 2 guests)

Similar Threads

  1. DSP/EQ/XO for 2x2226 and 2447/2352
    By baldrick in forum Lansing Product Technical Help
    Replies: 13
    Last Post: 02-22-2013, 06:49 AM
  2. Damaged magnet on JBL 2447
    By BullFire in forum Lansing Product Technical Help
    Replies: 9
    Last Post: 09-28-2012, 06:18 AM
  3. 2446 or 2447
    By imtkjlu in forum Lansing Product DIY Forum
    Replies: 5
    Last Post: 03-24-2006, 04:07 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
  •