Page 2 of 2 FirstFirst 12
Results 16 to 22 of 22

Thread: Combating H.F. Hearing Loss. ;)

  1. #16
    Senior Member 1audiohack's Avatar
    Join Date
    Jul 2007
    Location
    Las Vegas Nevada
    Posts
    3,018
    One more.

    In this pic the white is four quick points of PEQ including a shelf. I didn't save the details though. Still in the quick and dirty phase. The yellow is just a 4.5uF cap. This swallows 15dB of dynamic headroom from the midband and 18dB when the 3.0uF cap gets used.

    Rob if there is anything more that you wonder about the 4338 let me know and I will dig up my later work.

    Barry.
    Attached Images Attached Images  
    If we knew what the hell we were doing, we wouldn't call it research would we.

  2. #17
    Administrator Mr. Widget's Avatar
    Join Date
    Apr 2003
    Location
    San Francisco
    Posts
    9,500
    Kind of OT, but check this out. According to the poster the pair of AMT drivers stacked with wings matches the ~106 dB sensitivity of the Klipschorn or La Scala horns.

    https://community.klipsch.com/index....-for-heritage/

    On the surface this looks pretty darned impressive. Note the resolution on the FR plot. Easily as linear as a JBL 2405 and response to ~450Hz!


    Widget
    Attached Images Attached Images   

  3. #18
    Senior Member
    Join Date
    Jul 2003
    Location
    Orange County, CA
    Posts
    3,462
    If someone wants to use the ESS Great Heil AMT, I have 3D printing programs that I created to make a pair of "flairs" as well as a pair of extensions that follow the natural angle. But if you really want to have fun with an ESS AMT: https://www.audiokarma.org/forums/in...-heil.1025205/

  4. #19
    Senior Member 1audiohack's Avatar
    Join Date
    Jul 2007
    Location
    Las Vegas Nevada
    Posts
    3,018
    Every time those Heils go up for sale I always consider them but have never made the leap. I have heard them but never really loved them. I guess I should work with a pair to really see.

    I just bought a pair of Eminence N324X-8ís. These look promising. Carbon weave diaphram that waterfalls and extends better than Beryllium, non resonant 1mSec out and really makes it past 20kHz.

    Test test test.
    Barry.
    If we knew what the hell we were doing, we wouldn't call it research would we.

  5. #20
    Senior Member
    Join Date
    Jul 2003
    Location
    Orange County, CA
    Posts
    3,462
    Quote Originally Posted by 1audiohack View Post
    Every time those Heils go up for sale I always consider them but have never made the leap. I have heard them but never really loved them. I guess I should work with a pair to really see. I just bought a pair of Eminence N324X-8ís. These look promising. Carbon weave diaphram that waterfalls and extends better than Beryllium, non resonant 1mSec out and really makes it past 20kHz. Test test test. Barry.
    If you make the modifications I made (i.e., the back half round and front flares), the soundstage/imaging/detail from the Heils is unlike any JBLs I've ever heard. If you get out to Orange County, CA (or anyone else is in the area), feel free to arrange a demo.

  6. #21
    Administrator Robh3606's Avatar
    Join Date
    Apr 2003
    Location
    Rocinante
    Posts
    7,903
    Quote Originally Posted by 1audiohack View Post
    Every time those Heils go up for sale I always consider them but have never made the leap. I have heard them but never really loved them. I guess I should work with a pair to really see.

    Test test test.

    Barry.
    Hello Barry

    Pull the trigger! They are lots of fun to experiment with. I used a pair for a while and for now have them in storage but I will be bringing them back at some point.

    Rob
    "I could be arguing in my spare time"

  7. #22
    Senior Member Steve Schell's Avatar
    Join Date
    Jun 2003
    Location
    Long Beach, CA
    Posts
    1,458
    Hi Barry, guys, long time no talk. Try as I might, I can't make out the frequencies on your curves of the ST-400. Am I seeing a steady droop above 10 khz., or earlier? I'm keenly interested, as I have been running the Selenium / JBLs for a while now, ever since they were $30 each NIB on ebay. This was around five years ago.My ears only function to 10 or 11 kHz. these days, so I have a droop as well. The STs sound very sweet and non-fatiguing to me, which I attribute to their phenolic diaphragms. They keep up fine with my live drum kit recordings, pulling about even with the 075s, my previous favorites. I like the old ESS big Heils as well. A pair of ESS transmission line towers with the AMTs on top serve as my computer monitors.

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. hearing loss
    By Mister Tawny in forum General Audio Discussion
    Replies: 5
    Last Post: 03-08-2009, 05:06 PM
  2. Subwoof loss :(
    By subwoof in forum Forum Announcements
    Replies: 70
    Last Post: 01-31-2009, 06:37 AM
  3. Hearing and Aging
    By Mr. Widget in forum General Audio Discussion
    Replies: 66
    Last Post: 02-15-2008, 03:54 PM
  4. Hearing and Listening
    By invstbiker in forum Miscellaneous Gear
    Replies: 4
    Last Post: 02-24-2006, 02:02 PM
  5. Hearing rooms 1
    By paragon in forum Lansing Product General Information
    Replies: 46
    Last Post: 11-05-2004, 10:13 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
  •