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One of my friends asked me about connecting a mic to his stereo receiver at home. It has several sets of RCA line level inputs. I'm not sure if a microphone would work properly on these inputs. I could easily make an RCA L/R to XLR cable, but I think there would be an impedance mismatch. I'm guessing I need some kind of attenuator.
Any thoughts?
Jeff Moss
Moss Communications
Computer Repair-Networking-Cabling
MBSWWYPBX, JGAE
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Moderator-1A2, Cabling
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Whenever I used microphones on line level inputs they were either specially desdigned for that (Long runs) or we used a matching transformer.
Sam
"Where are we going and why are we in this hand basket?"
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Joined: Oct 2001
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Jeff, this should work. STM LDA3 ---------------------------------- MrG
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The microphone is, well, mic level. That's much lower than line level so you are going to need a preamp. That RDL is one, there are many others.
If there is a phono input (another low level input)you could use that if you can stand the RIAA equalization that boosts the low end.
It's not an impedance issue.
-Hal
CALIFORNIA PROPOSITION 65 WARNING: Some comments made by me are known to the State of California to cause irreversible brain damage and serious mental disorders leading to confinement.
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Joined: May 2007
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Moderator-1A2, Cabling
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Hal -
I bow to your wisdom - you're 100%. Going from Mic to Aux and vice versa we used matching transformers. From mic level to line level we used a preamp.
We used Line level inputs on extremely long runs -ones which exceeded the parameters for low impedence microphones.
Sam
"Where are we going and why are we in this hand basket?"
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Joined: Dec 2002
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Thanks Hal, I will take a look at some preamps. We might even have some old stuff at work that my boss could give me.
Jeff Moss
Moss Communications
Computer Repair-Networking-Cabling
MBSWWYPBX, JGAE
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Joined: Feb 2005
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I bow to your wisdom - you're 100%. Going form Mic to Aux and vice versa we used matching transformers. From mic level to line level we used a preamp.
Don't bow just yet. I used to use 150 ohm to 20K mic input transformers back in the good old tube days.
Jeff, tubes are those glass things that light up inside and get hot.
-Hal
CALIFORNIA PROPOSITION 65 WARNING: Some comments made by me are known to the State of California to cause irreversible brain damage and serious mental disorders leading to confinement.
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Joined: Dec 2002
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Come on Hal, I know what a tube is 
Jeff Moss
Moss Communications
Computer Repair-Networking-Cabling
MBSWWYPBX, JGAE
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Joined: Mar 2001
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I have a tube full of toothpaste---and I never saw it light up nor get hot. I'll watch it, though....... :dance:
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Joined: Feb 2005
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Probably because it's full of toothpaste...
-Hal
CALIFORNIA PROPOSITION 65 WARNING: Some comments made by me are known to the State of California to cause irreversible brain damage and serious mental disorders leading to confinement.
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