What is the difference between a dual-tone cavity and a single-tone cavity?

Speaker cavity: refers to the space inside the speaker. This space plays the role of sound wave reflection, refraction, and diffraction in the speaker.The design of the sound cavity has an important impact on the sound quality. Through reasonable sound wave propagation path design, the sound quality can be optimized to make the sound clearer and more pleasant to the ear.

The design principle of the speaker cavity involves the propagation theory of sound waves and the design of the internal structure of the cavity.


In the sound cavity, sound waves will be reflected, refracted, and diffracted by the wall. These phenomena will affect the phase, amplitude, and propagation direction of the sound, thus affecting the final sound quality effect.

Single tone:

Within this single sound chamber, all audio signals are processed and diffused.


This design is relatively simple and low-cost, so it is widely used in many ordinary headphones and speakers. However, because low-, mid- and high-frequency sounds are all mixed in the same sound chamber, the result may be muddy, distorted, and lacking clarity.


Dual tone:

Refers to two independent sound chambers inside a sound device (such as headphones or speakers).

This design allows the audio signal to be separated into two separate chambers for better sound processing and dispersion.


The main advantage is that it improves the localization and clarity of sounds.

By separating the bass frequencies from the mids and trebles, the dual-chamber design allows the bass to be tuned independently, reducing the impact on the mids and trebles, resulting in more precise sound differentiation and less distortion. This design can also provide a richer audio resonance space, making the low-frequency dive deeper, the mid and high frequencies more extensible, and the sound clearer and more transparent.


Compared with a single cavity design, high, medium, and low frequencies are all in the same space, so they will inevitably be mixed together. As the name suggests, the dual-tone cavity design means that high-frequency, mid-frequency, and low-frequency have different and exclusive spaces, so the interference between different frequency bands will be reduced, and the separation will be improved, resulting in better audio separation and improved sound analysis capabilities. Enrich the audio resonance space and make the sound clearer and more transparent.


High: high frequency | Mid: medium frequency | Bass: low frequency

(Pictures are for example reference only)

Differences in cavity size

Differences in speaker cavity size can have a significant impact on speaker performance. Here are several possible impacts:

① Changes in sound quality: The size of the sound cavity directly affects the resonance and diffusion of the sound. Larger sound chambers generally provide richer bass performance because the large space can accommodate more air vibrations, resulting in deeper, fuller bass. Conversely, a smaller cavity may place more emphasis on the mids and highs, making the sound sound brighter and sharper.


② Volume difference: The size of the sound cavity also affects the volume output of the speaker. Generally speaking, larger sound chambers can accommodate more air movement, potentially producing greater volume. However, this also depends on the design of the speaker and the efficiency of the driver unit.


③Frequency response: Changes in the size of the sound cavity will affect the frequency response of the speaker. A larger cavity may produce a smoother frequency response, especially in the low frequencies. However, if the sound chamber is too large, it may cause the sound in the mid- and high-frequency parts to become blurred or distorted.


④Impedance and damping: The size and shape of the sound cavity will also affect the impedance and damping characteristics of the speaker. These characteristics have an impact on the efficiency and sound quality of the speaker.


⑤ Directivity: The design of the sound cavity, including its size and shape, will also affect the directivity of the speaker. That is, the distribution of sound emitted by the speaker in different directions.