On 13-Jan-08, at 11:44 PM, Michael Herger wrote:
>
>> Just out of interest, what are the db numbers supposed to represent?
>> They appear to be negative, which doesn't seem very intuitive.
>
> That's physics, and I never understood it :-).

http://en.wikipedia.org/wiki/Decibel

dB is an expression of power (among other things) on a logarithmic  
scale.  0 is considered 'line level' and is usually full volume, or  
near to it (another typical maximum is +6dB).  Anything lower is thus  
negative, or attenuated, meaning the original output power is being  
reduced.  Each 3dB reduction is about half of the power.

Basically, for those who want dB display, the negative makes perfect  
sense.  For the rest, it's simply nice to know that it goes to 11.

-kdf
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