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Hello. Could you tell me how to convert this circuit so that I could use this circuit with a single polarity supply ?or If you have any sub woofer circuit that uses single polarity supply so could you share with me the schematic ?audioguru said:This circuit is an excellent active crossover. The opamps can be TL072 dual and TL074 quad. They need a dual polarity supply for this circuit.
For a crossover frequency of 102Hz then replace the 33nF capacitors with 100nF and replace the 66nF capacitors with 200nF (two 100nF in parallel).