Josef:
There's 2 kinds of answers to your questions. Then second (which I'll
try to answer below) touches on what everyone's been posting about
recently, the question of whether the preamplifier of the HD-P2 is so
quite that it won't be noticeable relative to the internal noise of the
microphone. As a first guess, then answer with HP-P2 and ME 67 is that
yes, the amplifier is quite enough.
The other part of the question is "is a shotgun style microphone what I
want?" and that depends on what you want to record and how you want to
use the recordings. A few considerations:
The HD-P2 is a stereo recorder. Perhaps you want 2 microphones? Almost
certainly the answer is "yes" if you're interested in sound scapes/ambiance.
If you want to record distant, individual subjects (like a single bird
singing, ground squirrel noises, and the like) 1 microphone might be all
you need.
The choice then is usually between a shotgun and a parabola. There's
been lots of posting about this and you'd best check the archives. The
discussion in the "White papers" about parabolas at
http://user.bahnhof.se/~telinga/ merits your consideration. It helped me
make up my mind.
NOW FOR THE NOISE that everyone's talking about, here's how I think the
calculation is supposed to run, all cribbed from the web page
http://www.rane.com/note148.html about "Selecting mic preamps".
From Sennheiser's data sheet we learn the ME 67 has sensitivity of 50
mV/Pa, maximum sound pressure 125dB, and A-weighted noise level of 10 dB.
The maximum output level is then about 7 dBu while the HD-P2 has a max
mic input of 13.8 dBu. So the microphone won't overload the recorder's
preamp, even with the loudest sounds you could record. (the 7dBu is from
table 1 in http://www.rane.com/note148.html --- "selecting mic preamps")
With 50mV/Pa sensitivity and 10 dB-A noise, the output noise is -108 dBu
(table 3). If Bruce Wilson's value of -115 dBu for the preamp noise of
the HD-P2 (in a recent posting here) is about right, the preamp is 7 dBu
quieter than the microphone and (according to table 4) it adds less than
1dB to the overall noise.
Cheers!
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