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我在使用TPA3118D2设计一个功放，要求是15V电源，4欧姆喇叭,功率在15W，BTL模式，但是我查看手册上在4欧姆，15V的时候输出功率在20W以上，怎么解决，谢谢！！！
这是最大输出功率，实际可以不到这么大
