Complex sentence: Typical of sealed-box speakers of similar size, the 3/5A has little or no low bass, but the design reinforced its lower register by a boost at around 160 Hz, giving the subjective impression that the speaker is more bass-rich.
Split into simpler sentences: Typical of sealed-box speakers of similar size, the 3/5A has little or no low bass. But the design reinforced its lower register by a boost at around 160 Hz, giving the subjective impression that the speaker is more bass-rich.