Just finished this "true to life" experiment . :-) 200 Ohm ProSet phones was loaded to phone-out parallel with sound card. I don't see any difference with 200Ohm-loaded and not loaded pictures: http://forum.cqham.ru/download.php?id=44172 RX-EQ = Flat always.
Alex Brett Howard: > What would be slick is if you had a pair of headphones and a headphone > splitter Y cable. Plug the headphones into one port and the sound card > input into the other and then take measurements. That would be a bit more > true to life. > > ~Brett > > -----Original Message----- > From: Alexander Ponomarenko [mailto:[email protected]] > Sent: Monday, July 06, 2009 8:40 AM > To: Paul Christensen > Cc: Brett Howard; [email protected] > Subject: Re: [Elecraft] K3 Audio Low Pass Filter > > I think 100uF caps is enough value. Look these plots (with 100uF in > AF-amp), > we see identifical plots for Line-out and for Phone-out. > > logarithmic view: http://forum.cqham.ru/download.php?id=43583 > linear view: http://forum.cqham.ru/download.php?id=43582 > > 73! Alex > > Paul Christensen : >>> I've been informed Elecraft is already replacing those caps with 100uF >>> caps in the current production units. >>> >> My guess is that scaling the caps beyond 100 uF is only of interest to a >> small minority of ops. The majority will probably be happy with the > current >> choice of 100 uF. Going from 10 uF in the prior design to 100 uF is > already >> a significant step in the right direction. > > ______________________________________________________________ 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
