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Re: Roland R-26 handheld recorder and noise

Subject: Re: Roland R-26 handheld recorder and noise
From: "Dan Dugan" dandugan_1999
Date: Mon Sep 19, 2011 5:33 pm ((PDT))
David Brinicombe, you wrote,

> My other objection with regarding a 3.5mm jack as two additional mic 
> inputs is that they are not balanced line and would need two 
> transformers for use with long mic leads or high earth noise levels.

By good engineering standards, yes, but it's amazing what you can get away with 
sometimes. I run PIP mics on 60' extensions frequently with no problem except 
for my mobile phone. I even recorded a community symphony in the middle of the 
city with PIP mics on long cables--I figured I'd be zapped by taxi radios, but 
there was no problem at all.

> I 
> get mains hum just with the AC ground gradient here between the house 
> and my electricity supply pole ground. I also had bad ground loop 
> trouble when I wired the XLR shells to screen on a stereo pair and put 
> them on damp earth.

That happened to me, too. Had to wrap them in a plastic bag. I recommend not 
grounding connector shells of portable cordage.


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