Bentley20190121 wrote:樓主同時擁有Yamaha...(恕刪) Yamaha YST-FSW150重低音買新品,單體卻有震動雜音,是6.5吋喇叭螺絲沒鎖緊 ? DIY卸下防塵網蓋,重新鎖緊箱體幾十個螺絲,終於解決。印尼原廠有待加強品管