Hi--
I re-did the test comparing Rode Nt1-A mics (5.5dBA self noise)
through the 722, HiMD & Microtrack pres/recorders.
As I suspected, the whine on one segment in the first test was from a
computer in sleep mode in the next room when the door was cracked
open a tiny bit. The traffic rumble is at 3am on a Monday morning-
the least I can get, basically. The playback levels are matched both
by ear and by measurement and splitting the difference. This gives a
lower Hz weighting which actually makes the hiss differences less
noticeable.
I added another test segment inserting an MP2 external mic preamp
before the Microtrack's line input.
The relative levels matched test #1 in terms of levels which is
encouraging except MT's mic input was a little closer to -21dB of the
reference NH-900's, rather than -20dB. The splkes you can see @ ~14K
are in the Rode mics. The spikes show much more with the 722 and the
MP2->MT. Rob D.
Two versions:
Larger with uncompressed 48K/16 sound:
http://www.uwm.edu/~type/Mic%20Preamps/MicroTrack_NH900_722Compare2.mov
Small with compressed IMA4 sound:
http://www.uwm.edu/~type/Mic%20Preamps/MicroTrack_NH900_722Comp2_IMA4.mov
At 1:57 PM +0000 11/14/05, unprofildeface wrote:
>--- In Jim Lee
>wrote:
>>
>> Rob,
> > Any chance you could include the Edirol R-1 in your revised round of
>> testing? Klas indicates it is quieter and has a couple of other
>> advantages as well. A head to head comparison between the Edirol and
>> MicroTrack devices would really useful to people looking to get started
>> on a budget. Has such a comparison already been done somewhere else.
>> Those two devices seem to be the only real contenders at that price
>> point (MD excluded).
>
>Hello Jim
>You can check this URL, though you'll need to register
>(but it's free, and really worthy):
>http://taperssection.com/index.php?topic=3D50566.0;all
>The Edirol R-1 preamp isn't really quiet, but it has
>pretty nice A/D converters - if you can plug a good
>external mic preamp (with phantom power if you need
>it) in its line input, I guess you'll be happy.
>The MicroTrack's phantom power is only 30V, not 48V
>as one would expect..... that's pretty useless with
>many condenser microphones. So you'd better have a
>close look to the R-1 -- except if you're the happy
>owner of a good preamp + A/D converter like the Lunatec
>v3, in which situation you could use the SP/DIF digital
>input from the MicroTrack.
>Have a nice day!
>Matt
>
>
>
>
>
>
>"Microphones are not ears,
>Loudspeakers are not birds,
>A listening room is not nature."
>Klas Strandberg
>Yahoo! Groups Links
>
>
>
>
--
Rob Danielson
Film Department
University of Wisconsin-Milwaukee
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