Will the KX3 drive the SP3 adequately? Chuck Hawley c-haw...@illinois.edu
Amateur Radio, KE9UW aka Jack, BMW Motorcycles ________________________________________ From: elecraft-boun...@mailman.qth.net [elecraft-boun...@mailman.qth.net] on behalf of Walter Underwood [wun...@wunderwood.org] Sent: Tuesday, February 13, 2018 10:40 PM To: Elecraft Reflector Subject: Re: [Elecraft] SP-3 frequency range question I use the same Pyle speakers, mostly because they were cheap, but they sound OK. My RX EQ is flat. With my KX3, I drive them with a $10 12V audio amp, because the phones output is 100 mW. Details here: https://observer.wunderwood.org/2017/03/04/speakers-for-my-elecraft-kx3/ wunder Walter Underwood wun...@wunderwood.org http://observer.wunderwood.org/ (my blog) > On Feb 5, 2018, at 12:23 PM, Joe Subich, W4TV <li...@subich.com> wrote: > > On 2/5/2018 1:43 PM, James Wilson wrote: >> Great for the K3 on SSB or CW. Not Hi-Fi for music but entirely >> adequate. > > I've been using the Pyle PCB3 series "cube" speakers since well > before the SP3 was introduced. The Pyle speakers are spec'd at > 90 - 20 KHz (about the same as the SP3) and are easy to drive > as well. > > I notice no difference in response between the speakers and my > headphones (typically Yamaha CM500 but occasionally smaller, > ear bud or "professional" Sony headphones) *HOWEVER* I have the > K3 RX EQ set to roll off (-16 dB) the 50 and 100 Hz bands with > a -6 dB roll off in the 200 Hz band for SSB/AM and with -16 dB > at 50 Hz and -3 dB at 200 Hz for CW. > > There is no issue for me with the roll off if/when I listen to > AM or shortwave broadcast but I can certainly "flatten out" the > response by changing the RX EQ to flat or even add a bit of low > end boost if band conditions are quiet/no QRM. > > 73, > > ... Joe, W4TV > > > On 2/5/2018 1:43 PM, James Wilson wrote: >> Bill, >> Personally, I like the SP-3 speaker. I have two of them and, >> compared with my Koss headphones, they both sound like >> the headphones. Great for the K3 on SSB or CW. Not Hi-Fi >> for music but entirely adequate. PLUS, they look good >> in the K-Line. >> Jim - W4RKS >> ---------------------------------------- >>> In the real world, does the SP-3 exhibit well rounded frequency >>> response? Or, is the response more directed for "communications use"? >>> How is it for listening to AM broadcast? How does it do with the famous >>> K3 hiss? How does it do with a less capable receiver (one without an EQ)? >>> I am considering some station simplification, hence the SP-3. Currently, >>> I am using the Behringer MS40 pair. Super sound, but quite large and do >>> have an internal amp (I have experienced no RF problems). >>> Bill W2BLC K-Line >> ______________________________________________________________ >> 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 li...@subich.com > ______________________________________________________________ > 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 wun...@wunderwood.org ______________________________________________________________ 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 c-haw...@illinois.edu ______________________________________________________________ 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
