I am one of the ones who is experiencing difficulties with the CM500’s mic sensitivity. Like some others with a recent model CM500, I have the preamp on and the mic gain pegged on my K4, the mic right up close to my lips, and I cannot get 5 bars without talking much louder than what should be necessary.
I can confirm that it works (albeit poorly) with bias on and does not work at all when the bias is turned off. 73, Dave - N5DCH > On Aug 7, 2023, at 3:08 PM, Alan Bloom <n...@sonic.net> wrote: > > Thanks Jim. Unfortunately I'm several thousand miles away from home so I > can't do that test right now. I'm pretty sure it's an electret, but I'll > check when I get home. > > Alan N1AL > > > On 8/7/2023 11:00 PM, Jim Brown wrote: >> On 8/7/2023 12:44 PM, Alan Bloom wrote: >>> I also use it for recording a radio show on a computer sound card. Again, I >>> have to set the gain to near maximum to get proper levels. >> >> Alan, >> >> The CM500 has always had an electret mic, which requires bias, although the >> data sheet has always called it a dynamic mic. As a test, turn off bias and >> see if that changes anything. If it is a dynamic, turning off bias should >> make it work better. >> >> My WAG is that what you bought might be a counterfeit. My experience buying >> all sorts of things in the last 5 years (kitchen tools, shoes, etc.) has >> been seeing lots of what appear to be either counterfeit or cheapened >> versions of stuff I'd previously owned and wanted a second one. >> >> 73, Jim K9YC >> >> >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to a...@elecraft.com <mailto:a...@elecraft.com> > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > <http://mailman.qth.net/mailman/listinfo/elecraft> > Help: http://mailman.qth.net/mmfaq.htm <http://mailman.qth.net/mmfaq.htm> > Post: mailto:Elecraft@mailman.qth.net <mailto:Elecraft@mailman.qth.net> > > This list hosted by: http://www.qsl.net <http://www.qsl.net/> > Please help support this email list: http://www.qsl.net/donate.html > <http://www.qsl.net/donate.html> > Message delivered to david.n5...@gmail.com <mailto:david.n5...@gmail.com> ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
