The biggest change in the speaker device market over the past few years has been the insane growth in sales of portable Bluetooth speakers.

With the advantages of no connecting wires and compact size, the overall sales of Bluetooth speakers have skyrocketed in several e-commerce statistics.

However, many users have found after purchase that the sound quality of the Bluetooth speakers they have purchased is often not as good as they thought.

Bluetooth speaker sound quality is generally bad exactly why? Let's talk about this issue.

When it comes to factors affecting the sound quality of Bluetooth speakers, the first thing that may come to mind is the loss of Bluetooth audio transmission.

As early as in the Bluetooth 2.0 / 2.1 era, the Bluetooth transmission rate reached 2.1 Mbps, enough to meet the transmission of high-quality audio.

However, in Bluetooth audio transmission, both the early Bluetooth 2.0 / 2.1 and today's very popular Bluetooth 4.0, use the same A2DP protocol.

The A2DP protocol significantly limits the transmission bandwidth, and the audio signal needs to be effectively compressed to ensure real-time playback on the receiving end.

Compared to Bluetooth audio transmission, Bluetooth speakers have a greater limitation in terms of sound quality performance is the size of the speaker.

In audio equipment, size has a lot to do with sound. It's almost impossible for a speaker with a small volume to sound good.

For portable Bluetooth speakers, due to volume constraints, the most common program is to place a full-range unit on each side, and the use of a passive diaphragm to increase the volume of low-frequency, the number of sound-generating units and the quality of the traditional 2.0 speakers have a relatively large gap.

At the same time, limited by the size of the Bluetooth speaker, the interval between the two full-range units is often very small, which will also affect the separation of sound.

The small size design determines that the upper limit of the sound quality of the Bluetooth speaker will not be too high, and the Bluetooth transmission will also bring some side effects to the sound quality of the Bluetooth audio.

The value of Bluetooth speakers lies more in the richer application scenarios compared to traditional speakers. When we go out, we can put the Bluetooth speaker in our backpack like a bottle of water.

This is also the original design of the Bluetooth speaker products, it is not to provide the best sound, but to adapt to more occasions, and then try to tune the sound as well as possible.