Vented boxes are far more critical and I might try breaking the woofer in for a few days and retest if I were using a vented enclosure.

被放气的箱子是更加重要的并且我也许设法打破低音扬声器几天和再实验如果我使用被发泄的封入物。

youdao

The PA-310 CM is 3-way full-range system in a vented trapezoidal enclosure featuring one 10 "woofers, a 4" horn loaded MF, equipped with one 1 "cone tweeter."

CM是一个以梯型相体及气孔结构的三分频全音域系统，它装配了一个10吋低音喇叭、一个4吋中音喇叭，采用一个1吋圆锥形高音单元。

youdao

In his own apartment, the AC is housed behind a vented enclosure painted the same colonial blue as the walls.

WSJ: Ugliness for All