That's odd, I use a Koss SB-40 on my IC-9100 for satellite. I had originally bought it to dismantle and use the ear cushions to replace the worn out one's on a CM-500 I had. But when I listen to my D/L it sounds good enough for me, never a bad audio report. I don't think I would use it to rag-chew with on HF but it is more comfortable to wear and does the same job as a Heil PRO 7 I bought to replace it when I mistakenly shipped the 40's to my winter home. The Koss set is now back here where it belongs, the Heil now sits on the shelf waiting to be sold at the next hamfest I table at. For 25 $, the SB-40's are a good deal. I use the CM-500's exclusively on my remote K3/0 mini setup....
73 Jeff kb2m -----Original Message----- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Luis V. Romero Sent: Tuesday, August 18, 2015 2:20 AM To: Elecraft List Subject: Re: [Elecraft] KX3: Cleaner audio with Yamaha CM500, also PTT I have several CM500'ds and also a Koss SB40. The Koss SB40 headset is IDENTICAL to the CM500 in design and construction, except in one area: The Mic capsule. The Koss mic capsule is dynamic, not condenser. It is also HORRIBLE! I believe it is a cheap earphone soldered up for mic duty. It sounds like absolute mud and no amount of eq in the K3 or with my outboard equipment made it sound acceptably. Lu Romero - W4LT ______________________________________________________________ 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
