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for all you high end surround heads out

Subject: for all you high end surround heads out
From: Rob Danielson <>
Date: Sat, 19 Jun 2004 11:03:31 -0500
Lang-
I agree about the mp2 pots, as smooth as they are, I'm always moving 
them by mistake. Level matching in the field is not as big a deal as 
you might suspect.  I ran the four mics through the preamps set close 
to the level I expected in the field (3/4 for active daytime, full 
gain for night). Outside, I directed all four mics towards a speaker 
and increased the playback level of a 240-400Hz tone to obtain -10dB 
peaks on my recording app  meters. I found that I that the preamp 
adjustments to get the levels to match at the recorder meters were 
minor and of the order easily accounted for in mixing. When I record 
in low level stetting, the "air" rumble coming from all directions is 
consistent enough to vually match the levels.  But I don't fuss about 
it-- for example, I don;t sacrifice saturation if a pair of mics is 
hotter and produces more signal without over-modulation. Matching 
levels is critical when setting speaker level playback and for this 
you may have to invest in a high quality SPL meter. I've been doing 
this by ear, leaving them set but I can see I'll need to buy one 
pretty soon. The Radio Shack unit isn't good enough; the Triplett 
unit I borrowed for an installation worked okay. A unit that goes 
below 40dB or even 30dB would be great, but might be too pricey. Can 
anybody recommend a good brand model to be on the outlook for?  Rob D.

  = = =

At 5:04 PM -0400 6/18/04, Lang Elliott wrote:
>Walt:
>
>But how then do I get the levels on all channels exactly the same? This is
>very important in surround work. I really would like to gang all the volume
>controls so that it's easy to make adjustments in the field. Otherwise I
>guess I could get a clicker and hold it directly over the mikes and then
>adjust volumes in the studio, but this still might not be accurate enough.
>
>One thing I dislike about the MP-2 is that the volume controls are
>continuous, so it is difficult to get them adjusted to the same gain,
>especially at night. I would have preferred click stop pots.
>
>Lang
>
>From: Lang Elliott <>
>
>>
>>  I was hoping the new Sound Devices 744T recorder would do the trick, but
>>  only two inputs will have preamps and phantom power, so I'd be stuck with
>>  the preamp problem there as well. No obvious solution right now, I guess.
>
>What about your MP2 for providing pre's for two more channels? Or is the
>744T lacking enough channels? Can't remember right off.
>
>Walt
>
>
>
>
>"Microphones are not ears,
>Loudspeakers are not birds,
>A listening room is not nature."
>Klas Strandberg
>
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>[Non-text portions of this message have been removed]
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>
>
>"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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