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2. Re: iRig pre

Subject: 2. Re: iRig pre
From: "Max" oatcruncher
Date: Fri Jan 4, 2013 9:12 am ((PST))
Hi Raimund,
Once again many thanks for your input here; I'm not sure I fully understand it, 
but it would appear (I think) that using it the way I do (LS-10 Low Sense/max 
gain 10) and only upping the gain to the minimum necessary on the iRig, is best 
possible way to use this? If I've still got this wrong, don't be afraid to call 
me names! It's a pity, as you've already stated, that the iRig can't be used 
just as a phantom power supply; it's so much lighter and more convenient than 
my Art Phantom II.
Cheers
Max


--- In  "Raimund"  wrote:
>
> > Many thanks for your clarification. Am I also wrong about noise increasing 
> > on the iRig as gain is increased?
> 
> Hi Max,
> 
> Yes, that is also wrong: Increasing the gain on a typical preamp usually 
> reduces the input-referenced noise floor (in comparison to the microphone 
> self noise). 
> 
> But you are of course correct that increasing the gain will indeed increase 
> the output-referenced noise level of the preamplifier. For that reason it 
> would be really useful to keep the gain as low as possible in order to 
> minimize the subjective noise floor in a recording. That lower gain would 
> however also reduce the (dBFS) signal level in the recording, which can only 
> be compensated by getting closer to sound source. 
> 
> In other words, it is possible to make excellent recordings using noisy 
> microphones and poor preamplifiers as long as you managed to get close enough 
> to the singing bird or whatever you want to record. 
> 
> Cheers,
> Raimund
>








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