em co hai con loa tu gian kenwood, va co amply thoi thuong co bay gio muon nang cap len he thong 5.1 theo cac bac em nen lam the nao. co gia ca cang tot. va ca cho mua nua thi cang on, noi chung tien it lam cang re cang ngon. Nho cac bac chi day, cam on nhieu lam