Inverted speakers are the most common speakers on the market. This type of speakers uses an inverted hole to convert the energy of the woofer in the backward direction as the phase exchange, and superimposes it with the sound wave moving forward. This type of speaker has a lower bass Naturally, the dive depth is low, suitable for most music.
Airtight speakers mostly appear on speakers with relatively small calibers. Due to the airtight relationship, these types of speakers have fast bass speed and are vigorous and powerful, making them more suitable for listening to songs with a strong sense of rhythm.
Band-pass speakers are basically used for subwoofers. No speakers can be seen on the surface of the speakers. There are two cavities of different sizes in the speaker box. The smaller one is responsible for the upper limit frequency of the bass, and the larger one is responsible for the lower limit frequency of the bass. The bass is the softest and the dive depth is low, which is suitable for softer music. However, the effective utilization rate of this type of speaker is lower than the former two due to the cabinet design.