I use this $9 stereo audio amp. It runs from a 9-18 V supply and puts out 15 W per channel.
https://smile.amazon.com/gp/product/B00C4MT274/ <https://smile.amazon.com/gp/product/B00C4MT274/> I have some cheap Pyle speakers, but you might look for some Radio Shack Optimus Pro-X44AV speakers on eBay. Those are small, decent shielded speakers from the past. I wrote up my KX3 amp/speaker set up on my blog. https://observer.wunderwood.org/2017/03/04/speakers-for-my-elecraft-kx3/ <https://observer.wunderwood.org/2017/03/04/speakers-for-my-elecraft-kx3/> wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Dec 22, 2018, at 1:59 PM, Mark Wheeler via Elecraft > <[email protected]> wrote: > > While the K3S is in the shop, I setup the KX3 as my temporary base station, > but the internal speaker leaves a lot to be desired at higher volume. I > connected a cheap set of powered pc speakers to the KX3 but I hear distortion > through the powered speakers when transmitting with the KX3 and KPA-100 > connected to a KPA-500. Has anyone found a high quality powered speaker to > connect to the KX3 that doesn’t distort when transmitting? > > Thanks, > Mark/WU6R > ______________________________________________________________ > 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]

