?????????????????

???????????????????????????????????????“????”“?????”“????”“????”“???”“???”“????”“?﹥”“????”??????????????????????????

??????????????????“???”?????????????檔???“???????”??????????????????

1)?????????

????????????50???????????20????????????????????????????????????N/2.5(N????е??)

2)??????????

???????6??10??15??20??????????????Ч????

???????????40407????????????

?????????40407????????? audiogearreviews.com/xlfc/