Another way to go is with bi-polar electrolytics. All caps in parallel add, but in series they divide. Using 2 x 2,200 uF caps in series is the equivalent of a single 1,100uF.
I couldn't find a single bi-polar electrolytic at Parts Express, so I suggest a pair of these:
https://www.parts-express.com/cat/non-polarized-electrolytic-capacitors/1385?N=19844+4294967118+4294...
plus one of these:
https://www.parts-express.com/cat/non-polarized-electrolytic-capacitors/1385?N=19844+4294967118+4294...
Put them in parallel instead of in series. Again, you’ll need to compare the final ESR of the 3 parallel caps to the original serial. I suspect you’ll end up with a much lower ESR and need to adjust. My guess is your original serial was around 2-6 Ohms of ESR. With 3 parallel, modern bi-polar caps, you'll end up with around half.
Best,
E
I couldn't find a single bi-polar electrolytic at Parts Express, so I suggest a pair of these:
https://www.parts-express.com/cat/non-polarized-electrolytic-capacitors/1385?N=19844+4294967118+4294...
plus one of these:
https://www.parts-express.com/cat/non-polarized-electrolytic-capacitors/1385?N=19844+4294967118+4294...
Put them in parallel instead of in series. Again, you’ll need to compare the final ESR of the 3 parallel caps to the original serial. I suspect you’ll end up with a much lower ESR and need to adjust. My guess is your original serial was around 2-6 Ohms of ESR. With 3 parallel, modern bi-polar caps, you'll end up with around half.
Best,
E