d9464cd7   
   From: mynamespacedbydots@xs4all.nl   
      
   "Patrick Turner"  wrote in message   
   news:3c55a994-c0a8-4691-803b-d3192958bef8@o23g2000prh.googlegroups.com...   
      
   [...]   
      
   > Many modern speakers are rated for 88dB/W/M, or for 2.83V input.   
   > This can be misleading if the speaker has Z of 4 ohms for a   
   > substantial part of its F range.   
      
   I have seen SPL specs like that before, and, as above, without   
   the 2.83V part being referenced to a particular impedance.   
      
   If f.e. a speaker is spec'd 88db/W/M, fine.   
   Or 88dB/M at 2.83V into 8ohm, fine.   
   Or 88dB/M at 2.00V in 4ohm, fine too.   
      
   Is it a simple omission stating volts without Z?   
   Or am I missing something?   
      
   Rgds,   
   Gio   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)