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Re: [motm] Re: pre-amp

2001-09-22 by J. Larry Hendry

----- Original Message -----
From: <mark@...>
You don't need a pre-amp to properly interface
line input with MOTM signal level.  10Vp-p is
around 14dBu.  If anything, you might need an
attenuator to bring the level down to MOTM levels.

--LH--
Mark,
I think what people mean is that they want in interface their instruments
directly to their MOTM without having to go through a mixer or other board
to bring it up to "line" or "motm" levels.  I think the term "line" level is
where the source of confusions seems to be.  As you know the term "line
level" can represent a significant range of officially - 10 to +4 dB
with -10 being much more common outside of professional studios.

The bottom line is that the output of most electronic instruments is -10dB.
People want to jump that up to MOTM levels and therefore are asking for a
pre-amp.  Certainly, it can work without the additonal gain.  But. the
signal to noise ratio is much better through the system if you start with a
signal of appropriate level.

--MM--
However, one use for a MOTM pre-amp would be to use it with
synthesizers and effects that produce a much lower output.

--LH--
Exactly.  I think many of us are guilty of calling our synth outputs "line"
level, because they often fall into that range.

Larry H

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