[Boatanchors] Microphone Output

[Richard Knoppow]

----- Original Message ----- 
From: "D C _Mac_ Macdonald" <k2gkk at hotmail.com>
To: <mwtallent at comcast.net>; <boatanchors at mailman.qth.net>
Sent: Friday, January 11, 2013 8:21 AM
Subject: Re: [Boatanchors] Microphone Output


>
> Or it might be 0 dBmv which is 1 millivolt rms.
> However, these values must be referenced to
> the load resistance!  AND, if I'm not mistaken,
> reference dB values are actually given based
> on power; dBmw, dBw, etc.  It is common,
> though to quote them based on either power
> OR voltage.  Of course, a given value means
> different things depending upon the system.
> Full details must be given to mean ANYTHING!
>
    See: 
http://www.sengpielaudio.com/calculator-transferfactor.htm

for a pretty good explanation of this and the difference 
between the "old" and "new" ratings.  BTW, my memory was off 
about the equivalent SPL of 10 dynes/cm^2, it is 94db not 87 
as I stated.


--
Richard Knoppow
Los Angeles
WB6KBL
dickburk at ix.netcom.com