Mark -
As a theoretical math thing, I can't help. Paul's much better! But
I can say, and as others have clearly stated in this thread, that you
can use the 410 for MOTM inputs and anything else. I built mine with
the resistor option for handling MOTM inputs. With a preamp (I also
use the ART MP) I've been able to use the 410 on pretty near
everything I own, including electric mandolins, lap steels, and
acoustic guitars. You can do amazing stuff with it.
My mixer (Tascam TM-D1000) has trim pots for the inputs. It just
plain works. Don't worry, buy one, you will not be disappointed.
Mike
--- In motm@y..., mark@i... wrote:
> At 5:50 PM -0600 03/25/01, Paul Schreiber wrote:
> >
> >A dBu is a voltage measurement, referenced to 0.7746 volts. This
∗magic∗
> >number is the RMS voltage across a 600 ohm resistor, dissapating 1
> >milliwatt.
> >For a sine, 1V RMS is 2.828V pk-pk.
> >So, a negative dBu 'reading' means the voltage is ∗less∗ than
0.7746Vrms.
> >The equation is
> >dBu = 20 log (Vrms/0.7746)
> >where Vrms is what you are wanting to measure in dBu's.
> >To 'go backwards'
> >Vrms = (.776) (10^dBu/20)
>
> Thank you, I found similar information in the books I checked, but .
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