atrocity wrote: > Thank you everyone for your thoughtful (and detailed!) responses.
Let me add a little more detail ! Although perhaps too much time has passed by now. It was a bit wimpy of me not to have a go at estimating the input capacitance of your device of choice, so here we go: 3 feet of input cable at, say, 30pF per foot = 90pF, plus, say, another 30pF for the device itself = 120pF. I don't know how good an estimate that actually is, but I don't suppose it would be miles out. The result surprised me. With a 47k input resistance that level of capacitance actually extends the HF response in a pretty flat manner. Much more and we get a characteristic overshoot at HF - which, I guess, would contribute 'brightness'. Increasing the input resistance (reducing the damping) also results in overshoot. So choice of cable is clearly quite significant. And a judicious reduction of input resistance could tame unwanted highs. But 7k would be overkill ! I've attached a (pdf) plot, capturing my earlier comments and this one. It may be of interest. I've also attached the 'gnuplot' script which I used to generate it, should you be minded to tinker for yourself. +-------------------------------------------------------------------+ |Filename: PhonoCartridge.gnu.txt | |Download: http://forums.slimdevices.com/attachment.php?attachmentid=26933| +-------------------------------------------------------------------+ ------------------------------------------------------------------------ mrw's Profile: http://forums.slimdevices.com/member.php?userid=38299 View this thread: http://forums.slimdevices.com/showthread.php?t=110295 _______________________________________________ ripping mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/ripping
