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爱好者自制的音箱之所以总不尽如人意。缺少迷人的超低音是主要原因之一。从30Hz到80Hz的低频频段虽然相距不大,但是由于人耳对该频段低频信号不敏感,同时低音扬声器对超低音重放时失真大,效率低,以致声压级达不到要求。然而,声音中的弹性、气势等感觉又都集中在这一段,缺少了这些,声音就会变得单薄、生硬。有些烧友尝试用大口径扬声器及增加倒相管等方法来弥补低音也只能有不同程度的改善。本文介绍一款性价比较高的超低音箱,它能较完美地重放30～80Hz的音频信号。
The reason why enthusiasts made their own speakers is not satisfactory. Lack of charming subwoofer is one of the main reasons. Although the low frequency band from 30Hz to 80Hz is not much different, the human ear is insensitive to the low frequency signal of the frequency band. At the same time, the subwoofer has large distortion and low efficiency when it is used for subwoofer playback, so that the sound pressure level fails to meet requirements. However, the sound in the flexibility, momentum and other feelings are concentrated in this section, the lack of these, the sound will become thin and blunt. Some fans try to use large-caliber speakers and increase the inverted tube and other methods to make up for the bass can only have different degrees of improvement. This article describes a high cost of ultra-low speakers, it can be more perfect playback of 30 ~ 80Hz audio signal.