I am using a pair of MFJ-281 Cleartone speakers with my K3. Some say they are fantastic; some say they are junk... But they work well enough for me for CW and SWL. They peak around 600-700 Hz. I would prefer a little lower, 400-500 Hz, but they work ok in that range. And no buzzing anywhere that I have heard. They also look like they were made to match the K3.
As for RF, I have had no issues with them. The lead-in of my end fed wire antenna is inches away from them (though I do only operate 10 watts output). 73, Drew AF2Z On Tue, 06 Nov 2012 20:18:45 +0000, Iain G4SGX. wrote: >Hello, >Well after 18 months the buzzing of the K3 internal speaker has >reached annoying proportions. >For a while it faded after switching on for 10 mins but now its a >constant resonance at 580 Hz. Great for CW! (not) >Because of the above I am sure its because the coil has shifted in the >speaker slightly rather than any sympathetic resonances from the case. > >I'm not complaining, I understand if I contacted Elecraft I am likely >to get a replacement speaker sent out, (Its a well documented 'extra >feature') but really haven't got round to it, nor am i likely too, >well down the list of priorities! >Will probably order it along with a set of CW filters when I need them. > >I'm REALLY after recommendations for an external shack speaker, or is >any good HiFi speaker good enough? I would assume some RF shielding >and good high end sensitivity was more of an issue. > >Yours. >Iain G4SGX. >Happy K3 Owner :) >______________________________________________________________ ______________________________________________________________ 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
