So-called enclosed TV Speaker, as the name implies

So-called enclosed  TV Speaker , as the name implies, is the top of the box body in addition to a loudspeaker hole, the other parts are sealed [though is airtight, but actually in certain parts of the speakers still has a small leak hole, its role is to make the speaker inside and outside the atmospheric pressure balanced]. Using the benefits of the speaker, good low frequency performance can be achieved. Enclosed speakers are usually on the wall of sound-absorbing material, with many fibrous the sound-absorbing material in general should be the more the better, it is best to fill in the cabinet, the advantage is to absorb and weaken the acoustic reflex, adjust the resonance frequency response; Also can make the air in the cabinet in the isothermal compression state, so as to make the effective volume increased. Enclosed  Multimedia Speaker  generally applied in the speaker's high-end products, its price usually is more expensive.

Most of the speakers, computer speakers are inverter type and inverter enclosure has many variants, such as the labyrinth, the acoustic resistance type, horn type, and so on. Its characteristic is the  bookshelf computer speaker  box board more than a inverter hole or inverting tube. Why do you want to add such a phase reversal hole or inverting tube? What use is it? Inverter enclosure principle is that if the rational design of inverting tube size and location, can make the original horn behind the sound waves travel through the inverter of the pot body hole at a particular frequency inverter, make its and trumpet sound wave superposition up from the front, into in-phase radiation, thereby reducing the enclosure noise increased low frequency acoustic radiation effect, improve the efficiency of the speaker. Inverter type speaker compared with enclosed speakers, has the following advantages, it further expanded the speaker of the low-frequency limit, generally can reach 20 hz, and reduce the lower limit of nonlinear distortion of acoustic waves. By the use of inverting tube and at the same time? The overall volume, improve the efficiency.