型号：  TA-228B          
  双18"  低频音箱          
  DULA  18"  SUB-BASS  SPEAKER  SYSTEM            
  标称功率：                            1000W  （MAX/1200W）          
  频率响应：                              30-500Hz  (±3dB)          
  标称阻抗：                                          4Ω          
  灵敏度：                                          98dB          
  单体组合：                                        2×18"          
  体积：(H×W×D)                            750×1050×710  (mm)          
  箱体材料：                                      Plywood