300W subwofer

Name this circuit is 300W subwofer. where strength from power amplifier equal to 300W, with power amplifier equal to this enough big to pamper ear of the beneficiaries music RnB for room that is is too not wide. at this circuit at SIM1 SIM2 and GND in connecting at leg potensio, to arrange is big the so small bass noise, for Lawson criterion can apply Potensio 100 KOHM. for Q9 Q10 Q11 Q12 applies coolant, for output earns direct interfaced to speaker subwofer.

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