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   rec.audio.tubes      Tube-based amplifiers... that go to 11      52,877 messages   

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   Message 51,377 of 52,877   
   Phil Allison to All   
   Re: A Hill of Beans   
   10 Jun 11 17:28:13   
   
   d7564f37   
   From: phil_a@tpg.com.au   
      
   "Andre Jute"   
   >   
   > ** The justifiably very famous QUAD II power amplifier was designed by   
   > Peter Walker in the early 1950s, while the whole UK was still suffering   
   > the   
   > aftermath of WW2 and in a state of poverty because the country's economy   
   > was   
   > deeply in debt to the USA.   
   >   
   > Despite this, the QUAD II was built with the highest quality parts   
   > available   
   > at the time - plus 3 superb wound components his firm made specially for   
   > the amp.   
   >   
   > Merely to keep production costs within sanity, Peter designed his new amp   
   > to   
   > use as few components as possible - unlike most of his competitors.   
   >   
   > He chose GEC KT66s because they were the most linear tubes then available   
   > for an audio power amp and EF86s as they were cheap, linear and had plenty   
   > of voltage gain.   
   >   
   > He also chose paper in oil filter caps in preference to electrolytics to   
   > give the amp a long life.   
   >   
   > The completed amp had exceptionally low THD (circa 0.1%), was internal   
   > adjustment free and very stable - although the even more famous Quad ESL   
   > speaker that would partner it was still years off - as was stereo   
   > reproduction.   
   >   
   > The QUAD II is "penny pinched" in the just same way that a Shakespeare   
   > sonnet is rather short on words.   
   >   
   > While the Turneroid fool is a self obsessed, conceited utter ass.   
   >   
   > ... Phil   
      
   I agree with Phil.   
      
      
   ** Wise man, is our Andre.   
      
      How the heck are you ?   
      
      
      
   ...  Phil   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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