Low-grade plastic speakers can't overcome resonance and have no sound quality because of their thin boxes (some designed plastic speakers are far better than inferior wooden speakers); Wooden speakers reduce the sound pollution caused by box resonance, and the sound quality is generally better than that of plastic speakers.

Generally, multimedia speakers are designed with two units and two frequency dividers. A smaller speaker is responsible for the output of medium and high notes, and another larger speaker is responsible for the output of medium and low notes.

The materials of these two kinds of speakers should be considered when choosing speakers: the high-pitched unit of multimedia active speakers is mainly soft dome (in addition, there are titanium domes used to simulate sound sources, etc.). ), combined with digital audio source, can reduce the stiffness of high-frequency signals, giving people a gentle, smooth and delicate feeling. Nowadays, many multimedia speakers use soft balls such as silk film with good quality and PV film with low cost.

Bass unit, which determines the sound characteristics of the speaker, is relatively important to choose. The most common ones are as follows: paper basin, gummed paper basin, paper-based wool basin, pressing basin and so on.

Paper pots have natural timbre, low price, good rigidity, light material and high sensitivity, but the disadvantage is poor moisture resistance, and it is difficult to control consistency when making. But there are paper pots everywhere in the top HiFi system, because the sound output is very uniform and the degree of reproduction is good.

Bulletproof cloth, with wide frequency response and low distortion, is the first choice for people who like heavy bass. The disadvantages are high cost, complicated production process, low sensitivity and poor light music effect.

Wool woven basin, soft in texture, performs very well in light music and light music, but the bass effect is not good, lacking strength and shock.

PP (polypropylene) basin, widely used in high-grade speakers, has good consistency, low distortion and remarkable performance in all aspects. In addition, fiber diaphragm and composite diaphragm are rarely used in public speakers because of their high prices.

The larger the speaker size, the better. Large-caliber bass units perform better at low frequencies and can be selected when purchasing. A sound box made of high-performance speakers means lower transient distortion and better sound quality. The horn of the bass speaker of ordinary multimedia speakers is mostly between 3-5 inches. A sound box made of high-performance speakers also means lower transient distortion and better sound quality.