> I think this would be an excellent area to investigate with your > tools. Almost a better use of the scientific method than whole > soundcard testing because you can focus on a single variable that is > known to be problematic. ...*reputed* to be problematic. The issues people have with capacitors tend to be the big, low-ESR power caps that are driven hard their entire lives. The conditions for audio caps are very different. > And unfortunately, electrolytic capacitors are the one component that > are about as far from their theoretical ideal of any component. No, not even close. Cored inductors are *way* worse. Transistors themselves are far less linear then caps. > In > fact, i think it's totally braindamaged to be using electrolytic > capacitor for audio coupling... Also false, and I've proven it to myself experimentally. Electrolytics used to couple small signals (such as line in/line out) affect audio unmeasurably, unless the cap is dead or the circuit is incorrectly designed. Caps can make a difference in filter circuits where they're operating near the active area of the filter, but I've never been able to measure any electrolytic contribution to an audio circuit in a strict coupling function. At one point I had intended to write up the differences between various capacitors used in output stage couplig via direct experimental measurement, and found that I couldn't actually measure a damned thing. No measurable contribution whatsoever (down to -110dB, my measurement limit). None. Zero. Nada. The analyzers that were far more sensitive than my very good ears couldn't tell the caps from a wire. Monty _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
