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how to make voltage for amplifier 35-0-35: It’s a ac to dc circuit diagram. dual power circuit diagram. negative positive and ground voltage. needs a full wave transformer. it’s for 35-0-35 voltage making circuit. every amplifier needs this circuit to making a good sound. here used 1N5408 diode. 4 diodes …

How to make crossover for tweeter: This circuit is most important in the audio. every soundbox needs this circuit to protect the speaker and tweeter. without using crossover the tweeter can’t use. the speaker needs bass but the tweeter can’t take bass. without this circuit also can use a tweeter …