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1. Re: iRig pre

Subject: 1. Re: iRig pre
From: "Raimund" animalsounds
Date: Fri Jan 4, 2013 1:22 am ((PST))
> Thanks Raimund for another of your ever-helpful responses.
> 
> So I guess the rule is, the iRig is useful for something like an  
> iPhone that has very poor preamps, 

That's right, Vicky.

> but for something like Sony PCM- 
> M10 or Olympus LS 5/ 10/ 11>turn off the iRig preamp switch 
> and just use it as a powering device if you need to 
> connect 48v powered mics.

There is unfortunately no such a switch that would allow to bypass its preamp. 
So, one had to modify the iRig, which would of course require some soldering 
skills and (more importantly) some understanding of its internal circuit. 

A "quick and dirty" solution would be perhaps to insert an XLR extension cable 
between the phantom-powered microphone and the iRig and then simply attach 
another cable (fitted with a 3.5 mm TRS plug) to the XLR plug (to XLR pin 1 and 
2 or 1 and 3).

In order to remove the high phantom power voltage bias, it would however also 
be required to insert a suited capacitor. Otherwise, the recorder might be 
destroyed.

Regards,
Raimund







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