BL> The bit I don't understand is that 13dB to 9dB is only a small
 BL> change (60%). Why is it so touchy? Or are we *already*
 BL> overdriving their amplifiers?

 RJ> The "dB" is not a linear scale, rather logrithmic. A 3dB
 RJ> increase represents a doubling of the quantity being measured.
 RJ> A 6dB decrease represents a 75% reduction (half of a half).
 RJ> Line levels are represented in dBm which is a ratio of 1mW
 RJ> across 600ohms. The logrithmic ratio still applies. A -3dBm
 RJ> level represents .5mW into 600ohms or any ratio appropriate i.e
 RJ> 1mW into 300 ohms or .25mW into 1200 ohms.

  ROFL! I am an engineer, Robert. I used to know what a dBm was. I was
talking in volts, which is what sets levelling. FYI, 4dB is 60% in
volts as I said, and 2.5-times in power.

 RJ>  Most line amplifiers
 RJ> are input limited which means that once the input reaches a
 RJ> pre-defined level, the out-put remains constant regardless of
 RJ> further excursions of input.

  What is the clipping level? 0.25v rms seems a little low to me.

Regards,
Bob
___ Blue Wave/QWK v2.12
@EOT:

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