tyler_durden;197708 Wrote: > A large amount of noise on the DC output would be easily visible on an > oscilloscope. I'll hook my scope up and try to take a picture and post > it.
Race you :) > As I stated before, a 6W power supply can't possibly put a large amount > of noise anywhere. It barely puts out a "large amount" of DC power! Oh, please, do the maths. The total signal power on a line level output is, say, 2V rms across 1kOhm, which is 4 milliwatts. How much power do you think might be needed to cause audible interference on that? A microwatt? > High frequency noise (if there was any) is easily filtered by small > capacitors and ferrite beads, and even by the inductance of the power > cable leading to the SB3. My own experience would tend to suggest otherwise - SMPS switching noise is too low impedance for small caps to help much, and too high in frequency for big ones. Lossy (ie. resistive) ferrite beads seem to work best provided the voltage drop across them isn't a problem. A higher Q inductor runs the risk of just ringing like a bell. -- AndyC_772 ------------------------------------------------------------------------ AndyC_772's Profile: http://forums.slimdevices.com/member.php?userid=10472 View this thread: http://forums.slimdevices.com/showthread.php?t=34749 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
