How to create a symmetric voltage supply for an op amp after a DC/DC conversion?

Carl asked Nov 25,2020

I have a power supply that provides +36V DC and -36V DC to power the amplifier, but I also need to supply positive and negative voltage to op amps (in an active crossover before the amplifier). Should I use two DC/DC converters, one for negative and the other for positive voltage or can I just use one?

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