Subwoofer directly determines the speaker's frequency response range and bass pros and cons. From the speaker cone design point of view, the current market, there are "dialysis cone," "apply tape basin", "bullet-proof material woven pots", "wool woven pots" and "CD film" and other materials. "Dialysis cone" has the advantage of low cost disadvantage is that too much power when bass seem boring, but less durable; "wrap tape basin" also has the advantage of low prices, durability a little better, and are not suitable for do high-power use; these two types of product positioning in general fan can, but definitely not professional. "Kevlar fiber braided basin" has the advantage of powerful bass, the rock, percussion performance has been outstanding for bigger power amplifiers used in the main speakers, the disadvantage is the complex production process, the natural price is not cheap; "ballistic fabric woven wool pots "and other advantages of soft music, light music is very good effect, for positioning in the bass range to use, disadvantage is not strong bass performance, but also less intensity of feeling;" CD film "is appearing on the market a new product, as compared excellent material bass speaker, which in all aspects of performance for all to see, but because many manufacturers have not yet been accepted to do so using this speaker speakers are rare. The current speaker of the material mainly used in plastic box with wooden box divided. Material thickness and quality are directly related with the cost of speakers, but also affect the speaker's performance. Speaker enclosure material density, the greater the sound produced by vibration when the box smaller, especially with high-power amplifier especially active speakers, and plate thickness to some extent, the effect is a powerful subwoofer to achieve protection, Therefore, the plastic speaker bass boast. Clearly, the low-end audio products is certainly molded case of. But it is definitely mid-range speakers wooden it? The answer is no. The grade of the existing wooden speaker, but also molded imitation wood, but some imitation products fully meet the highly advanced level. Certainly in the high-end products of wood, but the medium density board, or multi-layer sheet which has different effects on sound quality.