In general, an active speaker is a type of speaker that has a self-equipped amplifier inside the speaker. These amplifiers are specifically designed to push the speakers inside the speakers. Thanks to the special matching design, these amplifiers can be used to push the speakers inside the speakers, so that users do not need to consider the power of the amplifier. And whether the impedance matches or not. In addition, since the electronic frequency divider that divides the frequency at the front of the amplifier is installed in the speaker, and each power amplifier is only responsible for amplifying the audio signal of a certain frequency, the efficiency of the amplifier can often be made higher, and the distortion is relatively high. Smaller.

At present, in addition to the front main speakers for home theater, there are also active speakers dedicated to subwoofers and surround speakers. As for the active speakers for home theaters equipped with VCDs, they have recently been seen in the market. For example, those high-fidelity active speakers called 3D are equipped with 3D surround sound decoders. processor). By configuring two such active speakers, you can use the phase shifting, extension and related processing of the two-channel signal to convert the left and right stereo two-channel signals into not only the left and right. It can also have other three-dimensional sounds before and after. The biggest advantage of VCD machines is that hardware and software are cheap, but the "home theater" device with VCD as the source of the program is always a popular and inexpensive home theater. It is not worthwhile to match the front, center and surround speakers, and it is not necessary. If you can match a pair of such active speakers, use the "temporary" home theater for a while, but it is a good way to look at it for two or three years. Of course, after a few years, you have to buy a truly home theater, not a DVD and a set of home theater speakers.