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Yerboogieman
Nobel Prize Winner

USA
577 Posts
Posted - Dec 03 2009 :  11:03:01 PM  Show Profile  Send Yerboogieman a Yahoo! Message  Reply with Quote
As you all know, I am constantly updating Aaron on his mistakes. This forum topic is too much. If he uses firefox he must be underlined red with mistakes throughout the whole thing.
If you don't have the time to do it right, when will you have the time to do it over?
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nhardy
New Member

3 Posts
Posted - Dec 05 2009 :  03:31:24 AM  Show Profile  Visit nhardy's Homepage  Reply with Quote
Hi again.
I was just wondering if you could use a 3.5mm mono audio jack instead of an electret microphone.
Any ideas?
~ Nathan
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audioguru
Nobel Prize Winner

Canada
4218 Posts
Posted - Dec 05 2009 :  09:51:18 AM  Show Profile  Reply with Quote
The circuit is designed for an electret mic that has an output level of about 10mV. The resistor that powers the mic must be removed.
But an MP3 player or CD player has an output of about 270mV so an attenuator can be used that also mixes the stereo channels into mono like this:

Download Attachment: attenuator.PNG
4.7 KB
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