Related to the loss of enclosure damping, ported and dual-reflex bandpass designs also exhibit higher distortion levels at very low frequencies than sealed or single-reflex bandpass designs.
从箱体阻尼损失来看，导向孔和双反射带通箱设计在极低频下比密封箱和单反射式带通箱设计有着更大的失真。
Next in line, the wide-bandwidth dual-reflex and the ported enclosure exhibit very good efficiency as well.
接下来，宽带双反射带通和导向孔箱体也有很好的效率。
The sealed enclosure and the wide-bandwidth single-reflex bandpass are the least efficient designs.
密闭箱和宽带单反射带通是效率最差的设计。
The EVP-18 SUB is a passive bass reflex subwoofer in a lightweight and compact rectangular enclosure designed for use in portable live sound reinforcement and mobile DJ applications.
的执行副总裁，18分是一个被动低音这款小巧轻便的矩形适用于便携式现场扩音和移动的DJ应用设计的封闭反射低音炮。
Single-Reflex bandpass designs can also have good transient characteristics if their bandwidth is fairly narrow, but again, not as good as an optimized sealed enclosure.
带宽相当窄的单反射式带通箱也有能够拥有好的瞬态特性，但是再次强调，不可能赶上最优化的密闭箱体。
Single-Reflex bandpass designs can also have good transient characteristics if their bandwidth is fairly narrow, but again, not as good as an optimized sealed enclosure.
带宽相当窄的单反射式带通箱也有能够拥有好的瞬态特性，但是再次强调，不可能赶上最优化的密闭箱体。
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