Speaker Unit for Home Theater Set

Speaker unit for home theater set               Speaker unit refers to the situation of speakers (commonly known as speakers) used in the set speaker of home theater. It usually refers to the size, shape and material of speakers, which mainly determine the characteristics of speakers.

Most of the structural forms of subwoofer are cone basin type, and a few are flat plate type. There are many kinds of subwoofer diaphragm, including aluminum alloy diaphragm, aluminum magnesium alloy diaphragm, ceramic diaphragm, carbon fiber diaphragm, bulletproof cloth diaphragm, glass fiber diaphragm, propylene diaphragm, paper diaphragm, etc. Bass unit, which determines the sound characteristics of the speaker, is relatively important to choose. The bass unit with aluminum alloy diaphragm and glass fiber diaphragm generally has small caliber and large bearing power, while the bass unit with reinforced paper basin and glass fiber diaphragm has accurate timbre and good overall balance when replaying music. The paper basin has natural sound, low cost, good rigidity, light material and high sensitivity. The disadvantages are poor moisture resistance and difficult to control the consistency during manufacturing. However, the paper basin is made everywhere in the top hifi system because the sound output is very average and the reducibility is good. Bulletproof cloth, with wide frequency response and low distortion, is the first choice for those who love strong bass. Its disadvantages are high cost, complex production process, low sensitivity and poor light music effect. The wool woven basin has a soft texture. It performs very well for soft music and light music, but the bass effect is poor and lacks strength and shock. PP (polypropylene) basin, which is widely popular in high-grade speakers, has good consistency, low distortion and commendable performance in all aspects. In addition, fiber diaphragm and composite diaphragm are rarely used in popular speakers due to their high price.

Generally speaking, as long as the frequency response curve of the mid-range loudspeaker is flat, the effective frequency response range is greater than the width of the playback frequency band it undertakes in the system, and the impedance is consistent with the sensitivity and low-frequency unit. Alto units generally have cone basin and ball top. But its size and power are larger than the tweeter and suitable for playing medium audio. The diaphragms of the Alto unit are mainly soft materials such as paper basin and silk film, and occasionally there are a small amount of alloy ball top diaphragms.

The function of high-frequency loudspeaker in speaker is to replay various high-frequency signals, and its working frequency is generally above 2K. The overall requirement for high-frequency loudspeaker is that it can have flat frequency response, high-frequency playback upper limit as much as possible and certain power bearing capacity to meet the requirements in the effective working frequency band. Its structural forms mainly include horn type, cone basin type, ball top type and aluminum belt type. At present, the most common domestic speaker and small monitoring speaker is ball top type. The ball top tweeter is divided into hard ball top and soft ball top from the material. The diaphragm materials of hard top treble include aluminum alloy, titanium alloy, magnesium alloy, titanium alloy composite film, glass film, diamond film and so on. The treble played back by the hard top treble unit has bright timbre and metal feeling. It is suitable for playing pop music, film music and effect music. The production of excellent aluminum alloy and titanium alloy composite film dome tweeter can also better express classical music and human voice. The vibrating film materials of the soft ball top tweeter are silk film, silk thread film, rubber film and bulletproof cloth film. The soft dome tweeter unit is flexible and relaxed when replaying music, and has good natural expressiveness. It is particularly handy when performing classical music, human voice and other music with standard listening concepts. In recent years, the playback upper limit frequency of silk film and silk film ball tenor has reached 40KHz. Theoretically, the upper limit frequency of tweeter unit should at least reach 20kHz, the higher the better. However, the unit with excellent high frequency upper limit is also more expensive.

Naturally, the larger the speaker size, the better. Large caliber bass speakers can perform better in the low-frequency part, which can be selected in the purchase. Most of the subwoofers in ordinary home cinemas are between 5 and 12 inches. The speakers made of high-performance speakers also mean lower transient distortion and better sound quality.