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Re: low voltage DC phantom (was new firmware for M-Audio Microtrack 249

Subject: Re: low voltage DC phantom (was new firmware for M-Audio Microtrack 2496
From: Rob Danielson <>
Date: Tue, 22 Nov 2005 21:16:09 -0600
Does the phantom power supply he's designed produce less noise? Are 
you free to tell us more? Is it portable? What operating voltage? Rob 
D.

  = = = =

At 9:15 PM +0100 11/22/05, Klas Strandberg wrote:
>According to my friend it is more or less by chance all the time if a power
>device works or not. He sais that all modern IC-circuit for the purpose
>have a tendency to drift away in frequency. In his experience only one of
>them work under all circumstances, stable and pure. In his opinion, the
>Rolls is a very conventional and thereby unreliable device. ... if it
>works, it works... kind of.
>
>Klas.
>
>At 19:43 2005-11-22, you wrote:
>>One would think that a good phantom circuit would be easy to include
>>like a good mic pre, but the demands might be at odds with small size
>>and the low DC voltages involved. The 722 and 744 had phantom issues
>>all the way through beta testing and they're ~11 volts and up. There
>>are quite a few audio interfaces/pres that the run on AC wall warts
>>apparently because of phantom powering demands. Len Moskowitz cited
>>likely problems with the MT24/96's phantom when he first laid eyes on
>>it.  Are there other ~3-4 volt DC voltage devices that have good
>>phantom circuit performance besides the Sound Devices MP2 and MixPre?
>>Rob D
>>
>>At 6:18 PM +0100 11/22/05, Klas Strandberg wrote:
>>  >Yes, I will appreciate that! It makes it a much better recorder.
>>  >Thanks Oryoki!
>>  >I just wish they had a better phantom power supply installed. Might come
>>  >with the next model.
>>  >
>>  >Klas.
>>  >
>>  >At 16:14 2005-11-22, you wrote:
>>  >>M-Audio has released a firmware update for
>>  >>the Microtrack 2496.
>>  >>
>>  >>Klas, you'll appreciate these two fixes:
>>  >>
>>  >>1. The level meters now work in REC/PAUSE mode.
>>  >>
>>  >>2. When recording from mic or line inputs, the
>>  >>headphone monitor now works in REC/PAUSE as well
>>  >>as REC mode.
>>  >>
>>  >>Before rushing out to buy this $350 machine,
>>  >>nature recordists should take note of its low
>>  >>record levels relative to the Sony Hi-MD
>>  >>recorder.  This is demonstrated in message
>>  >>20599 posted by Rob D.  Thanks again, Rob!
>>  >>
>>  >>--oryoki
>>  >>
>>  >>
>>  >>
>>  >>
>>  >>
>>  >>
>>  >>
>>  >>
>>  >>"Microphones are not ears,
>>  >>Loudspeakers are not birds,
>>  >>A listening room is not nature."
>>  >>Klas Strandberg
>>  >>Yahoo! Groups Links
>>  >>
>>  >>
>>  >>
>>  >>
>>  >
>>  >Telinga Microphones, Botarbo,
>>  >S-748 96 Tobo, Sweden.
>>  >Phone & fax int + 295 310 01
>>  >email: 
>>  >         
>>  >
>>  >
>>  >
>>  >
>>  >"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
>>
>>
>>
>>"Microphones are not ears,
>>Loudspeakers are not birds,
>>A listening room is not nature."
>>Klas Strandberg
>>Yahoo! Groups Links
>>
>>
>>
>>
>
>Telinga Microphones, Botarbo,
>S-748 96 Tobo, Sweden.
>Phone & fax int + 295 310 01
>email: 
>         
>
>
>
>
>"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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