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Text File  |  1992-07-25  |  730 b   |  22 lines
  1. Newsgroups: sci.electronics
  2. From: tchannon@black.demon.co.uk (Tim Channon)
  3. Path: sparky!uunet!pipex!demon!black!tchannon
  4. Subject: Amplifier for 25K Hertz... 
  5. Distribution: world
  6. References: <9952@sun13.scri.fsu.edu>
  7. Organization: null
  8. Lines: 9
  9. Date: Fri, 24 Jul 1992 22:44:27 +0000
  10. Message-ID: <712017867snx@black.demon.co.uk>
  11. Sender: usenet@gate.demon.co.uk
  12.  
  13. >      What I have is a small box with a built-in speaker which
  14. > emits a ~25K Hz (above the range us humans can hear) when I
  15. > press a button.  The strength of the signal is very small.
  16. > 
  17. Have you considered using a high efficiency loudspeaker eg. a horn?
  18.  
  19.   TC. 
  20.     E-mail: tchannon@black.demon.co.uk or tchannon@cix.compulink.co.uk
  21.                                 
  22.