There are two main differences between subwoofer and woofer: catching the audio band and creating different effects; The difference of scope and function in actual application.

First from the "capture audio band and create a different effect" to tell the difference. The advantage of heavy woofer lies in creating atmosphere, with the effect of reducing shock audio.

For example, when we listen to music or watch movies, we can quickly distinguish the bass effect of the horn. However, the heavy bass is played below 100 hz, which is undetectable to the human ear. The rest of our body can pick up some of the bass, so we can feel the bass.

Unlike the double woofer, it can restore most of the low frequency sound, making the whole music closer to the original sound. However, it does not render the musical effect as strongly as the bass.

Next, the distinction between "scope and effect in practical application". The use of heavy bass is conditional. The installation of heavy bass device needs to be configured in the horn at the same time treble and alto, so that the restored effect is more real, more shocking.

Next, heavy bass to produce shocking effect needs very strong bass to support. In this process, the demand for horn quality is higher, and the demand for power is also higher. A good bass is backed up by a powerful power supply, because it consumes a lot of energy.