I finally got a chance to listen to the recordings. The K4 sounded very bottom heavy with band noise. I did a quick analysis on the spectrum analyzer and confirmed that the K3 envelope looks ok, but something is not right about the K4. The K3 is centered on about 450hz and is symmetrical, with steep skirts on both low and high end. The K4 appears to be set at the same center but it blossoms out on the lows, accounting for the low frequency band noise evident in the recording. The K4 filter high end is also soft.
Spectrogram available here: http://www.qrv.com/download/K3K4CWspectrum.png The K3 is light blue and the K4 is green (the red and blue are unused channels). It looks like the DSP filter on the K4 may have a configuration problem. Tks, 73 Ed w2rf -----Original Message----- From: elecraft-boun...@mailman.qth.net <mailto:elecraft-boun...@mailman.qth.net> <elecraft-boun...@mailman.qth.net <mailto:elecraft-boun...@mailman.qth.net> > On Behalf Of Charlie T Sent: Thursday, June 25, 2020 6:21 PM To: elecraft@mailman.qth.net <mailto:elecraft@mailman.qth.net> Subject: Re: [Elecraft] New CW audio recording: K3 vs. K4D This is sorta like demonstrating a 4K TV screen using a 1080 video. Too many detracting variables, recorder, internet, D to A, your audio system, etc. Charlie k3ICH -----Original Message----- From: <mailto:elecraft-boun...@mailman.qth.net> elecraft-boun...@mailman.qth.net < <mailto:elecraft-boun...@mailman.qth.net> elecraft-boun...@mailman.qth.net> On Behalf Of <mailto:kt...@watershipfarm.com> kt...@watershipfarm.com Sent: Thursday, June 25, 2020 8:32 AM To: <mailto:elecraft@mailman.qth.net> elecraft@mailman.qth.net Subject: Re: [Elecraft] New CW audio recording: K3 vs. K4D I would have to say both sound better then my KX3 speaker. ;-) And I'm waiting for my K4D! BTW, the recording doesn't sound as good and my K2. :-) So we'll see if the K4 can hold up against the K2. :-) -- 73, William KT5TE On Wednesday, June 24, 2020 10:32:51 PM CDT Macy monkeys wrote: > Overall, the K3 sounded a little smoother to my ears. I do not own a > K3 nor have I ordered a K4. But I would be happy with either one! > > John K7FD > > > On Jun 24, 2020, at 7:24 PM, Bob Wilson, N6TV < <mailto:n...@arrl.net> n...@arrl.net> wrote: > > > > 73, > > ______________________________________________________________ > Elecraft mailing list > Home: <http://mailman.qth.net/mailman/listinfo/elecraft> http://mailman.qth.net/mailman/listinfo/elecraft > Help: <http://mailman.qth.net/mmfaq.htm> http://mailman.qth.net/mmfaq.htm > Post: <mailto:Elecraft@mailman.qth.net> mailto:Elecraft@mailman.qth.net > > This list hosted by: <http://www.qsl.net> http://www.qsl.net Please help support this email > list: <http://www.qsl.net/donate.html> http://www.qsl.net/donate.html Message delivered to > <mailto:kt...@watershipfarm.com> kt...@watershipfarm.com ______________________________________________________________ Elecraft mailing list Home: <http://mailman.qth.net/mailman/listinfo/elecraft> http://mailman.qth.net/mailman/listinfo/elecraft Help: <http://mailman.qth.net/mmfaq.htm> http://mailman.qth.net/mmfaq.htm Post: <mailto:Elecraft@mailman.qth.net> mailto:Elecraft@mailman.qth.net This list hosted by: <http://www.qsl.net> http://www.qsl.net Please help support this email list: <http://www.qsl.net/donate.html> http://www.qsl.net/donate.html Message delivered to <mailto:pin...@erols.com> pin...@erols.com ______________________________________________________________ Elecraft mailing list Home: <http://mailman.qth.net/mailman/listinfo/elecraft> http://mailman.qth.net/mailman/listinfo/elecraft Help: <http://mailman.qth.net/mmfaq.htm> http://mailman.qth.net/mmfaq.htm Post: <mailto:Elecraft@mailman.qth.net> mailto:Elecraft@mailman.qth.net This list hosted by: <http://www.qsl.net> http://www.qsl.net Please help support this email list: <http://www.qsl.net/donate.html> http://www.qsl.net/donate.html Message delivered to <mailto:e...@qrv.com> e...@qrv.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 arch...@mail-archive.com
