High Efficiency Speaker Asylum

RE: Faital HF Drivers

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djk

In Reply to: RE: Faital HF Drivers posted by coolhandjjl on June 09, 2012 at 21:10:31

I've been there and done that with the 2380, and I suggest you lie down until the urge to use that horn passes.

Follow Ups:

RE: Faital HF Drivers - coolhandjjl 10:41:16 06/10/12 (2)
Understood. I also understand about the fatiguing nature of some drivers, as some do bother me after a while. I'll avoid titanium diaphragms.

On the Klipsch Community forums, the Eliptrac 400 horn gets a lot of positive discussion. It's a 2" throat tractrix design, carved out of several layers of MDF or plywood. That was my next choice after ruling out the 2380.
- RE: Faital HF Drivers - djk 18:38:57 06/10/12 (1)
  "On the Klipsch Community forums, the Eliptrac 400 horn gets a lot of positive discussion. It's a 2" throat tractrix design, carved out of several layers of MDF or plywood. That was my next choice after ruling out the 2380."
  
  I'm glad to see my pushing them into making that design paid off, I'm sure it sounds fine. It will narrow in the top octave though, you may still want a tweeter.
  
  You might want to try the larger 18 Sound elliptical horn, its expansion is largely conical and thus needs CD equalization.
  
  http://www.loudspeakersplus.com/pdfs/XT1464.pdf
  
  I use the Beyma CP755Nd, a Mylar surround driver available in Ti or Al.
  
  http://www.usspeaker.com/images/Beyma-CP755Nd-dist-size401.gif
  
  You might be able to find a used set of Adamson MH225. Designed by Geddes for Adamson, they have elliptical waveguides for the 1.5" HF and the 10" Mid-bass horns.
  
  http://www.ebay.com/itm/Adamson-MH225-Loudspeakers-NIce-/251082377185?pt=LH_DefaultDomain_0&hash=item3a75ad07e1
  
  http://abpg.com.ua/abpgdata/medialib/p71110.jpg
  
  Frequency Response (Hz) (1/3 octave smoothed & averaged over
  Acoustic Waveguide coverage region)
  �3 dB 200 Hz to 18 kHz
  Sensitivity (dB SPL@1Watt/1m)
  MF 111
  HF 113
  
  http://vancouver.en.craigslist.ca/rds/ele/3060327920.html
  - RE: Faital HF Drivers - coolhandjjl 19:54:35 06/10/12 (0)
    "I'm glad to see my pushing them into making that design paid off, I'm sure it sounds fine. It will narrow in the top octave though, you may still want a tweeter."
    I read about folks going the two-way route and liking it, but from what you are saying, it can be a stretch? The two-way seemed simpler, and no need to design in a passive x-over.
    I've seen pics of the Eliptrac 400 in an offset baffle board with a vertical mounted Klipsch tweeter along the edge. I was hoping to make it a two-way design, but if I find I need a tweeter, then I have to find someone to design the x-over.
    I do already have in my possession a pair of brand new Selenium D405 2" compression drivers, the ones with the phenolic diaphragm. I suppose I could use those with the Eliptrac 400, run it from 500Hz to 2500Hz and add a tweeter such as the Bob Crites CT125 K style tweeter with the Eminence APT 50, it also has a phenolic diaphragm. Or maybe a clone of the JBL baby butt cheek horn for a tweeter.
    I've seen Greg Roberts' Fc260 and Fc280 horns, he refers to them as a tracetrix flare horns, so they do need a tweeter. He even designs one of them with a hole on the outer edge to mount the round Ciare 1.26 tweeter. I could investigate if those would work with my Selenium D405's also.
    The Beyma's mentioned are out of my price range unfortunately. Regarding your original suggestion to try the Faital HF144 driver + LTH142 horn, that driver specs only down to 600Hz. I need to cross at 500Hz
    
    Edits: 06/11/12

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