Replacement ear pads are available, but the internal wiring is very fragile.
I managed to get the replacements on, but broke a wire. After three breaks and four re-solderings, there wasn’t enough wire left to work with, so I bought a new headset. The Koss UR-20 is the same headphones as the Yamaha CM-500 and Koss SB-40, but without a boom mic. The link to these replacements was posted in this email reflector almost exactly a year ago (11/1/19) by Josh W6XU. These are the ones I ordered. https://www.koss.com/accessories/cushions/ur20-ear-cushion <https://www.koss.com/accessories/cushions/ur20-ear-cushion> This video walks you through the replacement steps. https://www.youtube.com/watch?v=Gz-atFziEz4 <https://www.youtube.com/watch?v=Gz-atFziEz4> wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Nov 2, 2020, at 1:50 PM, Alan - G4GNX <[email protected]> wrote: > > My CM500 certainly has an electret insert and it came with a separate plug-in > battery bias pack. > > Unfortunately the ear pads are starting to deteriorate. Have you had to > replace yours? If so, with what? ISTR I read somewhere that new separate pads > are not available. > > 73, > > Alan. G4GNX > > > ------ Original Message ------ > From: "Jim Brown" <[email protected]> > To: [email protected] > Sent: 02/11/2020 02:59:17 > Subject: Re: [Elecraft] [OT] Broken boom mic attachment on a CM-500 > >> Hmmm. I've used nothing but a CM500 since about 2008, and I've never seen >> one with a dynamic mic. The data sheet for all of them has said it was >> dynamic, but none of then were. >> >> 73, Jim K9YC > >> > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
