Page 7 of 7 FirstFirst ... 567
Results 91 to 100 of 100

Thread: 2450 Dia

  1. #91
    Obsolete
    Join Date
    Apr 2003
    Location
    NLA
    Posts
    12,193
    Quote Originally Posted by Zilch View Post
    Yes, not just slappin' stuff together randomly anymore....
    As of today?

    Cool!

  2. #92
    RIP 2011 Zilch's Avatar
    Join Date
    Jun 2004
    Location
    Berkeley, CA
    Posts
    9,963

  3. #93
    Obsolete
    Join Date
    Apr 2003
    Location
    NLA
    Posts
    12,193
    Quote Originally Posted by Zilch View Post
    OUCH!

    That puts them into an especially rarified zone for DIY, I'd say....
    It looks like the MSRP price on the 435Be and horn combo is $2,690 a pair. That's the best available for a DIY project for now. One could substitute in any one of the aluminum or beryllium, aquaplased or non-aquaplased c.d. variants as desired but none of them will sound quite as nice as the 435Be.

    I highly doubt JBL is going to make the 476Be and horn combo available for years and years.

    I wish some forum member would be able to clone that H9800 that you are currently borrowing.

  4. #94
    Senior Member Guido's Avatar
    Join Date
    Apr 2003
    Location
    Germany
    Posts
    2,503
    Quote Originally Posted by Giskard View Post
    I wish some forum member would be able to clone that H9800 that you are currently borrowing.

    Can you hear us in St. Francisco?

  5. #95
    Senior Member
    Join Date
    Jun 2005
    Location
    Lund, Sweden
    Posts
    451
    Give me the drawings on the horn so shall i let a man make them in his CNC.

    regards mats

  6. #96
    Obsolete
    Join Date
    Apr 2003
    Location
    NLA
    Posts
    12,193
    I think Mr. Widget posted them somewhere or has them somewhere.

  7. #97
    RIP 2011 Zilch's Avatar
    Join Date
    Jun 2004
    Location
    Berkeley, CA
    Posts
    9,963

    2452H vs. -SL

    1) Throatless "pancake" drivers, neodymium magnets, 4" diaphragms, 1.5" exit, both have 3.25" bolt circles, contrary to 2452H spec sheet:

    http://www.jblproservice.com/pdf/Dis...els/2452HJ.pdf

    2) Terminals are attached directly to the diphragms, ribbed for 2452H, smooth and Aquaplas'd in the "-SL" version. Rear cap damping is a felt pad, not foam. Plastic bushings in the cap seal to rubber standoffs under the binding posts.

    3) If the phase plug is plastic, it's a damn hard one. Reddish silicone O-ring around the body perimeter makes a seal to the cap. No ferrofluid.

    4) Performance on PT-F95HF, a direct bolt-up. L/R 24 dB @ 600 Hz for protection only. #7 and 8 have diaphragms dated last month, #5 and 6 are somewhat earlier and broken in, if that matters.

    "-SLs" played on different horns @ 1.2 kHz with compensation for Ian's visit, so a half-dozen members have heard them here....
    Attached Images Attached Images      

  8. #98
    Senior Member Hoerninger's Avatar
    Join Date
    Jul 2005
    Location
    Germany
    Posts
    1,892
    Quote Originally Posted by Giskard View Post
    I wish some forum member would be able to clone that H9800 that you are currently borrowing.
    The whole thing might be practical if the lower and upper part of the horn are glued together out of some sheets of plywood (pyramid style). The steps need to be sanded.
    Some recalculation might be necessary, the final handcraft is not that hard.

    Just a proposal.
    ____________
    Peter

  9. #99
    Senior Member pos's Avatar
    Join Date
    May 2007
    Location
    France
    Posts
    2,628
    I came accross this 2450SL photo in an ebay auction.
    What I found interesting is that the diamond surrounds are not aquaplassed, whereas the 2452SL and 475 diaphragms have their surround aquaplassed. Any idea why it is so?
    Attached Images Attached Images  

  10. #100
    Senior Member
    Join Date
    Oct 2003
    Location
    Texas
    Posts
    1,863
    I have a set of D82450SL phragms that don't have aquaplas on the surrounds.
    Attached Images Attached Images  

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Network for 2450 and 2405
    By Harryup in forum Lansing Product Technical Help
    Replies: 1
    Last Post: 12-23-2004, 06:53 AM
  2. 2450 SL diaphram
    By Maron Horonzakz in forum Lansing Product Technical Help
    Replies: 2
    Last Post: 11-04-2003, 09:58 AM
  3. 22235a, 2226j, 2360, 2450, 077
    By Dieter in forum Lansing Product General Information
    Replies: 11
    Last Post: 09-06-2003, 03:15 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
  •