Compared with Bluetooth audio transmission, the greater limitation of the sound quality of Bluetooth speakers is the size of the speakers.
In audio equipment, volume and sound have a great relationship. The sound quality of a large volume is not necessarily good, and the sound quality of a small volume is almost impossible. Bluetooth speakers belong to the latter.
In portable Bluetooth speakers, due to size limitations, the most common solution is to place a full-frequency unit about 1 inch on the left and right, and use a passive diaphragm to increase the sense of low-frequency volume. A relatively large gap. At the same time, it is limited by the volume. The interval between two full-frequency units in the Bluetooth speaker is often small, which also affects the separation of the sound.
Due to this "compact" design, the sound quality of Bluetooth speakers will be relatively limited. In order to get a better listening experience, there are often trade-offs in the sound style. The most common treatment is to increase the low frequency and use the "moving time playing" bass to "grab" the user's ears for the first time.