How to judge the quality of subwoofer?

Subwoofer is a common name or short for everyone, as the name suggests, the role of heavy bass is to strengthen the bass band, that is, to enhance the long wave part of the audio (below 100HZ, even including infrasonic wave, although people can not hear, but still have an effect, because the ordinary horn volume is limited, can not emit a longer wavelength of low-frequency sound, Therefore, a larger volume of subwoofers is needed to produce a low-frequency warm effect. So how to judge the quality of the subwoofer?

1, subwoofer power:
It determines the maximum sound intensity that the subwoofer can produce. We need to look at the rated power, you can also ask the power amplifier module model, and then query the output power of the module, that is, the output power of the speaker. At present, there are two ways to mark the power of subwoofer speakers: rated power and peak power. Signal-to-noise ratio: The higher the better.

2, subwoofer box material:
The current subwoofer speaker material is divided into plastic and wood two kinds. Originally, it was generally believed that wooden speakers were better than plastic speakers, but this idea is unscientific at present. The sound quality of some well-made plastic speakers is far better than that of shoddy wooden speakers. Therefore, in the selection of speakers, weight is a very important step. If a large wooden speaker is very light, then its performance must not be so good.

3, subwoofer diaphragm material:
Diaphragm material refers to the manufacturing material of subwoofer diaphragm. Among them, the vibrating film material of the treble unit includes plastic film, silk film and metal film; The vibrating film materials of the bass unit are paper basin, polyethylene basin, wool basin, aluminum-magnesium alloy basin. These materials have different properties, the price is high and low, it is difficult to say who is good and who is bad, like strings, choose a paper basin, wool basin, metal music selection, polyethylene basin, southern use of paper basin, wool basin as little as possible, easy to absorb moisture, change the sound quality.

4, subwoofer speaker unit diameter:
The diameter of the speaker unit (bass part) is generally between 2 and 6 inches, in this range, the larger the diameter, the higher the sensitivity, the better the low-frequency response.