f350ba05   
   From: phil_a@tpg.com.au   
      
   "Patrick Turner   
   >   
   >"Phil Allison"   
   >   
   >   
   > ** Triple stacked ESL57s ????   
   >   
   > That is SOME kind of speaker array !!!   
      
   Believe me Phil, triple stacked ESL57 is what the man has! I've seen   
   the pictures.   
      
   The speakers were all restored by expert John Hall. The owner also has   
   an additional pair of ESL57 which he uses with a pair of re-engineered   
   Quad-II amps.   
      
   if you divide the Z of a pair of ESL57 by 3 at all F, you have   
   speakers which have maybe 10 ohms max Z at bass, then 2.7 ohms at   
   about 1kHz, and about 0.6 ohms at 18kHz.   
      
      
   ** That makes any speaker lead inductance really show up.   
      
   Cables need to be kept very short ( like 2 metres) or made up from multiple   
   woven conductors.   
      
   Tocord ( aka Mogami Cable ) is ideal.   
      
   A very tightly * twisted pair*  of heavy gauge wires will do too.   
      
      
   Just why would this be?   
      
   ** Alignment is critical and keeping al 6 operating perfectly is a pain.   
      
      
   I'm not sure how he's lined up the axis, because its possible to   
   arrange the ESL so they partly function as line array speakers, and   
   ideally the HF path length should remain constant, so the speakers   
   should be "concave", and made to suit where one sits.   
      
   ** Correct.   
      
      
   But my client   
   tells me the sound is utterly awesome, not just able to go loud, but   
   to go real, and detailed.   
      
   ** Absolutely correct.   
      
    Listening to a well set up, stacked Quad ESL57s ruins you for all other   
   speakers.   
      
      
   The system is a plain stereo system, speakers apart and out from room   
   corners, room maybe 200cu.metres.   
      
      
   ** Sounds just about ideal  -  long as the room is quiet and heavily damped   
   too.   
      
   The room my friend set up was that sort volume, with carpet lined walls and   
   a suspended absorber covering about 40% of the ceiling.  Near as dammit to   
   acoustically dead.   
      
   He had a pair of KEF B139s in a large ported box for a sub as well -  sited   
   behind the listening position at about the same distance away as the Quads.   
      
   Awesome sound and all done prior to the arrival of CDs.   
      
      
   ...  Phil   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)