Probably of more consequence in the powered speakers is that they all are targeted at music use on PC's. They are in tiny enclosures and have a huge bass pre-emphasis to keep them from sounding "tinny". The pre-emphasis will increase with increasingly lower frequency, likely meaning that something with components around 5-20 Hz at the amplitude of turn-on pops is hugely emphasized.
73, Guy. On Wed, May 2, 2012 at 12:02 AM, Don Wilhelm <[email protected]> wrote: > Those "thumps" may be bothersome for those using powered speakers, I am > using unpowered speakers and while I hear ag the intensity couple of > "thumps" at turn on and turn off, neither are offensive and bothersome. > Perhaps you are increasing with your powered speakers > > Do your powered speakers run from the same power supply that you K3 is > connected to? If so, I would recommend a test made to determine if the > computer D and CPU/memory is adequate to run that program, > > 73, > Don W3FPR . > > 10:35 PM, Wayne Burdick wrote: > > Randy Farmer wrote: > > > >> My K3 also "thumps" with power on and off transitions.... > > This is an important part of the power-on self-test sequence. It > > allows you, and others, to verify even at some distance from the radio > > that your speaker(s), KIO3 interconnections, large electrolytic > > coupling capacitors, AF amp, DSP, and power supply are all functioning > > properly. > > > > Wayne > > N6KR > > > > ______________________________________________________________ > > 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
