Topic: DIY at8538; at8533 (or similar) power modules??

[Chuck]

The best solution is to use nonpolar caps rated at 50V or 63V.  The second best solution is to use two back-to-back electros (double the capacitance, 22uF).  The third best solution is to use 50V or 63V caps in the polarity drawn, because an electro is supposed to be able to take up to 15% reverse voltage.

So, I have my modified DMIC-20 open and want to replace the 4 polarized phantom power blocking caps (two on each mic input) while I'm in there.
I have 8 of the Panasonic 12uf, 63 volt electrolytic caps. Is it really OK to just wire them up in series with both positive ends pointing out? There is enough room in there to do that. I have also heard that it's good to bypass larger capacitor values with smaller ones when blocking phantom power... Would it help or hurt if I bypassed the back to back 12uf Panasonics with some .1uf stacked metal film capacitors?

Edit: It looks like the total capacitance with back to back 12uf capacitors is 6uf.
That would make a high-pass filter in the audible range with some loads. I may just order some 12uf non polarized caps from Digi-Key.