capacitor dielectric bias

I have only seen this phenomina with high capacity ceramic capacitors, not in electrolytics.

Liguy, it is very well known in electrolytics. If an electrolytic is used as a coupling cap, the cap must be biased with a DC voltage that is larger than the AC signal it is being used to couple. Electrolytics *really* don't like being reverse-biased, which would happen on part of the waveform if the first part of this statement is not realized.

Now in crossovers, 'non-polar' electrolytics have been used for years, but that technique produces distortion because of this bias issue. If they are to be used successfully in a crossover, the caps have to be biased with a battery. When this is done they easily operate with the performance of film caps.

Say what dude.

I don't understand the answer, either.
I'd like to see a sketch-o-matic with the dielectric bias clearly noted.

I was thinking along what may be a different line. I guess I'll draw what I want to do and 'think it thru'.

Magfan,

Have you experience with dc biased spkr cables as mentioned? I'm curious as I know Audioquest sell some but not found many others. I built biased interconnects, the improvement is significant. Also use a biased line between crossovers and panel/bass driver on ML Spire, again an improvement.
Re biased caps, it's an interesting thought though manufacture could be tricky and costly?
Regards
Ps