Its installed in the speaker outputs. So it doesn't modify the headphone circuits but I use it via speaker at home most of the time... I should take a look and see if the headphone output had that 11-12khz stuff on it...
~Brett On Fri, 2009-07-03 at 18:21 -0600, Bob Cunnings wrote: > What is the point of insertion (in terms of the schematic) for this filter? > > Bob NW8L > > On Fri, Jul 3, 2009 at 6:09 PM, Brett Howard<[email protected]> wrote: > > Its a low pass filter starting around 3.8Khz or so. I have some before > > and after plots. I just need to get around to posting them so I can put > > them up on the reflector. > > > > On Fri, 2009-07-03 at 19:45 -0400, Mike Harris wrote: > >> G'day, > >> > >> | All in all I'm quite pleased with the sound difference. > >> | > >> | ~Brett > >> > >> OK, that's couple of positive comments. Is there any technical data on > >> the characteristics of this filter. For example, does it in any way > >> respond to the "pink" vs. "white" noise thread of a few weeks ago. > >> > >> I've become rather more interested in this since reactivating my K2 and > >> running it side by side with the K3. The K2 sounds so much nicer even in > >> the presence of a received S3 buzzy background noise. If only the K2 > >> power overshoot on 40M SSB didn't give my amp a hard time... > >> > >> Now to put this in context, there was a huge improvement in the K2 as soon > >> as I installed the analogue af CW filter years ago. In SSB mode the > >> filter just introduces a low pass filter which takes the hiss out of the > >> audio and made it really smooth to listen to. > >> > >> I have played with the DSP bandwidth settings and replicated the K2 af > >> spectrum as displayed in Spectrogram to see if I can make them sound the > >> same but they don't. > >> > >> My agc and equalizer settings are nothing unusual or extreme. > >> > >> Regards, > >> > >> Mike VP8NO > >> K2 #1400 > >> K3 #345 > >> > >> ______________________________________________________________ > >> 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 > > > > ______________________________________________________________ > > 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 > > > ______________________________________________________________ > 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 ______________________________________________________________ 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
