High Efficiency Speaker Asylum

• RE: Altec 14 flattery... - GM 18:39:15 05/23/07 (0)
  In Reply to: RE: Altec 14 flattery... posted by Godzilla. on May 23, 2007 at 16:03:22

  Greets!
  
  Great Plains Audio is reproducing the horn, driver and maybe the woofer also, but if not can probably recommend a substitute.
  
  Upgraded XO: http://home.mindspring.com/%7Erchristianson/id2.html
  
  Brochure: http://www.lansingheritage.org/html/altec/specs/home-speakers/model-14.htm
  
  Studio monitor version cab: http://www.lansingheritage.org/images/altec/plans/1970's-lf-plans/enclosures18.jpg
  
  Spec sheets: http://www.lansingheritage.org/html/altec/specs/pro-speakers/9842.htm
  
  GM
  Loud is Beautiful if it's Clean!
  
  

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• RE: Altec 14 flattery... - Duke 17:24:08 05/23/07 (0)
  In Reply to: RE: Altec 14 flattery... posted by Godzilla. on May 23, 2007 at 16:03:22

  The Altec Model 14 is a superb loudspeaker even today. I owned a pair for a while, lost 'em in a fire.
  
  The innovation of the Model 14 (and better-known big brother Model 19) was matching up the directivity of the woofer and horn in the horizontal plane at the crossover frequency. This led to a higher crossover point than was normally used, as the Model 14 woofer's pattern didn't narrow to match that of the 90 degree constant-directivitiy horn until about 1500 Hz.
  
  Anyway, I do not think the Model 14 can be duplicated with the parts you list. The woofer is too different, the horn is too different, and most important, a generic crossover is extremely unlikely to sound really good. In my opinion, crossover design is pretty much the heart and soul of loudspeaker design.
  
  My suggestion is to go to pispeakers.com and look at the "Thermionic", and "Theater" versions of the "3 Pi" kit. In my opinion either one is a much closer approximation of the Model 14, and in particular the crossover will be excellent. Designer Wayne Parham is very much conscious of driver directivity, and in that respect he follows the same school of thought as the designers of the Model 14.
  
  Duke
  

  • http://www.pispeakers.com/AvailableComponents.htm#Thermionic   (Open in New Window)

  
  

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