Hi all - thanks for the replies regarding speakers. I do occasionally check the local thrift shop to see if there are any electronics on the shelf to take apart for components, and they do currently have a set of amplified PC speakers for short money. But I got bit by the homebrewing bug recently so I want to build something from salvaged components. I think I have everything on hand now to do that.
I mentioned this project to my son a few weeks ago - told him I bought some cheap amplified speakers at Best Buy then returned them, unopened, because it occurred to me I'm a ham so I should be able to build my own instead. He says good idea, that way you'll appreciate them more every time you use them. How it took him 5 seconds to realize that, and 30+ years (as a ham) for me, is beyond me ;) 73, Andrew NV1B .. On Thu, Apr 14, 2022 at 7:56 PM Walter Underwood <[email protected]> wrote: > This post describes what I put together for my KX3. That specific amp is > no longer available, but there are similar ones. > > https://observer.wunderwood.org/2017/03/04/speakers-for-my-elecraft-kx3/ > > wunder > K6WRU > Walter Underwood > CM87wj > http://observer.wunderwood.org/ (my blog) > > > On Apr 14, 2022, at 4:50 PM, Andrew Moore <[email protected]> wrote: > > > > KX2 arrived yesterday after a ~15 week wait, which was pretty much spot > on > > with Elecraft's original estimate. > > > > One of the best features is, especially for a compact rig with limited > > dedicated controls, the ability to assign a programmable function button > to > > an otherwise buried menu feature. For menu features that are binary > choices > > (such as enable/disable CW transmit), not only does the PFn button > activate > > the menu item, but it also toggles the parameter and dumps you right back > > into operating mode. For example, you can toggle between "CW transmit" > and > > "CW practice (no transmit)" by pressing only two buttons. No need to go > > through deep menus. Kudos to KX2 designers for thinking ahead. > > > > One of the not so great features is the internal speaker. It's even > raspier > > and more distorted than the forward-facing one supplied with the KX3. > This > > is to be expected; there are design trade-offs and this rig wasn't > designed > > to be a desktop model with high wattage audio output. > > > > My typical use case for the KX2 is to listen to it in the background on > the > > desktop with good quality speaker audio, and then to switch to > > headphones/earphones when in QSO. > > > > So I'd like to build an audio amplifier to convert the KX2 headphone > output > > levels to say 5 watt speaker output (one of the two channels will > suffice) > > for listening to relatively undistorted audio in the shack. A good > starting > > point is knowing what the output level and impedance is for the > headphones > > jack. I measured approx 20 mV P-P (impedance unknown) at an audio output > > level around "AF 10" according to the KX2 display. Does this sound about > > right? > > > > Bonus points: First QSO with the KX2 was from Maine to Bermuda at 1 watt. > > > > Thanks, > > -Andrew NV1B > > .. > > ______________________________________________________________ > > 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] > ______________________________________________________________ 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]
