Yamaha CM500 Headset – A plug & play ‘wow! factor’ for the Elecraft KX3!

If you're a KX3/KX2 owner, and enjoy SSB, then this may be the headset for you!...

If you’re a KX3/KX2 owner, and enjoy SSB, then this may be the headset for you!

Awhile back I purchased the Yamaha CM-500 headset to use with my Kenwood 590SG, but after awhile, I figured out that the Kenwood really should be used with a dynamic microphone for best results. I almost ditched this headset… but am sure glad I didn’t. I know the ear cups on these aren’t exactly acoustically tuned, nor do they provide outside ambient noise reduction (passive or active), but I must admit that these made my KX3 come alive! The Elecraft MH3 microphone has been placed in the drawer for emergency use only, lol.

IMG_20170629_211014

The KX3 was designed to accept the kind of microphone that’s on the Yamaha CM500 headset. While the CM500’s were way too hot on my 590SG, they work absolutely beautiful on the KX3 (since the KX3 has built in mic bias). They’re practically the cost of Elecraft’s microphone, so I’d ditch that option and snag these instead if you really want to appreciate the amazing DSP & filtering available on this little guy.

These are so comfortable around the ears, I suspect I could get several hours of use out of them before having to take a break. In order to adapt my Heil Pro-7’s to use with the KX3, I’d have to buy the Heil icom element for the headset which is another $68.95 just for the cartridge. Heil does make a nifty adapter cable that breaks out the 4 ring 3.5mm jack into a PTT jack & Mic jack if you don’t want to use VOX or the XMIT button on the KX3. To save the XMIT button, i’ll probably end up breaking out a separate PTT button in the future.

I just had a QSO on 40 meters with some locals here in Central Texas on the KX3 and I was grinning ear to ear – fatigue free ears & crystal clear audio. I had all but forgotten just how amazing the receiver is on the KX3. Not to mention I received numerous unsolicited audio reports while using the CM500’s not using any equalization or compression on the rig. This is a budget-friendly/must-have accessory for the KX3 IMHO. I’m becoming an absolute headset nut, I barely find myself operating SSB anymore without them. Granted there is an element of comfort that’s disturbed a bit by wearing them, but mine & the other station’s intelligibility increased so notably that it almost completely reduced retransmissions & repeats while operating voice modes!

Yamaha CM500 Specs:

  • 20Hz-20kHz headset frequency response
  • 120-ohm headset impedance
  • 100Hz-20kHz mic range
  • 600-ohm mic impedance
  • 1/8″ plug and 1/4″ adapter
  • 9′ cord
  • 1-year limited warranty

 

73

k5acl

 

 

 

 

 

 

Categories
Elecraft KX3Ham RadioHeadsetsUncategorized
6 Comments on this post.
  • Capt Bruce
    6 July 2017 at 6:21 PM

    OK JT — one more thought. Like you, I also have significant hearing loss, (too much Bing Bam BOOM close by) tinnitus and Old Age Ears. My confusion concerns what mike cartridge to choose for the 7300. It has been many years since my David Clark and BOSE days, in the field. 73//B

  • bruce malo
    6 July 2017 at 5:58 PM

    Hey JT… BUYING THE ICOM,7300 NEXT WEEK. THOUGHT U DUMPED THE YAMAHA HEADSET FOR THE HEIL HEADSET WITH BOOM MIKE. YOU KNOW MORE ABT THESE 2 THAN I… WHICH WOULD BE A BETTER HEADSET/MIKE FOR ME. I WOULD TEND TO USE THE HEADSET TO COPY CW, AND MAINTAIN PRIVACY FROM SNOOPY NEIGHBORS, BUT YES….I MIGHT LOWER MYSELF TO VOICE COMMS IF I GOT TOTALLY BORED. PRICE DIFFERENCE? Cya JT. N4BRM. PS-no work this week? 2,blogs in 2 days 😀

    • K5ACL
      6 July 2017 at 6:05 PM

      The Pro 7’s are in a completely different class IMO, acoustically tuned, sealed cups with passive noise reduction, phase reversal, aviation grade components… But I’m all about budget products that work just as good too! This headset should work with iCOM radios if you decide to go that route. More blog posts because it’s 110 with the heat index outside! 73 Bruce 🙂

  • Duane
    6 July 2017 at 2:42 PM

    Unless you chose a different headset before your 590SG went R.I.P… Never mind on my previous comment. I just seen on your shack listing/pic that you no longer have that rig. Great blog btw.

    • K5ACL
      6 July 2017 at 3:29 PM

      Hey Duane, thanks! I used the Heil Pro 7’s on my 590SG… which I still use with my TS-480SAT…

  • Duane
    6 July 2017 at 2:36 PM

    What did you use choose with your 590SG now?

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