College】 【weak What are the characteristics of active speakers? .--- Power By China's weak home 【Network】.

<br> 1. cost is low, the price can easily be accepted <BR> <BR> chassis independent of the external power amplifier should have sufficient mechanical strength and good shielding, some of the cost of manufacturing is often superior to case .The total cost of 15 to 20%. .Active speaker in the speaker amplifier settings within less than a power amplifier chassis, the cost can be greatly reduced. .In the amplifier circuit, the external power amplifier generally use discrete components, sound quality is better but the cost is high, and the complexity of installation and commissioning and production more difficult. .The active speakers generally use the power of integrated circuits, low price, simple design, generally without debugging, and full protection, easy to mass production. .This allows to further reduce the cost of active speakers. .In the wire, the high-quality stereo wire price is quite expensive. .Only one active speaker speaker wire, and at least a pair of regular speakers, which in turn reduce the cost of so many active speakers. .<BR> <BR> 2. Connection is simple, easy to use <BR> <BR> active speaker sound system greatly simplifies the link, so connectivity is simple, just a walkman and a pair of active speakers can constitute the most simple .sound system, the connection is only two. .<BR> <BR> 3. <BR> <BR> Save the trouble with the mix of audio equipment is very important, especially with the amp and speakers. .Audio equipment manufacturers produce many different styles, if an appropriate combination of style between the various devices can be complementary to issue a satisfactory sound. .If the mismatches, the piercing is not as hard as soft as mud. .Equipment should be familiar with the characteristics of many manufacturers, for the average consumer is very difficult. .Active Speaker of the amplifier and speakers by the same manufacturers, and sometimes even the same person design, the factory can be resolved with the problem, eliminating the need for users to worry. .<BR> <BR> ★ Active Speaker Active Speaker <BR> <BR> the composition of the composition can be divided into active and passive parts. .Some of the major active components from the power amplifier and power transformer. .Amplifier components used to amplify the music signal and achieve a variety of control functions, and power amplifier components of the transformer was to provide electricity. .Passive section includes speakers, crossovers and speaker cabinet. .<BR> <BR> Speakers are the ultimate devices for audio system, the vast majority of active speakers using a moving coil design, simple structure, low cost and good performance, but the treble and bass for different speakers .requirements difficult to balance, so you must use the treble and bass, respectively, for the two units, both provide good sound quality, but also to ensure that the full band. .The playback frequency woofer is generally between 20 ~ 6000Hz, bore most of the 3 to 8 inches. .Generally smaller tweeter, playback frequency of 1500 ~ 25000Hz, diaphragm diameter of 12 ~ 25 mm. . <BR> <BR> The role of divider is based on the frequency allocated to the signal to tweeter and woofer, high-level designers can use divider to adjust the tone of voice. .Divider has the effect of high-power low-frequency signals to prevent damage to the tweeter. .Middle and low powered speakers usually only the simplest single-frequency capacitance, low cost, but the result was poor, and high-end speaker is adjusted with a carefully designed and composed by the real multi-component divider. .<BR> <BR> Cabinet role is mainly to prevent "sound short" phenomenon. ."Voice short-circuit" phenomenon refers to the front and back of the speakers the sound waves is similar for the phase offset, mainly in the low frequency band. .If you do not install the speaker is no bassin the speaker, the cabinet's role is to both sides of the speaker's acoustic isolation, to avoid the "sound short-circuit" phenomenon. .<BR> <BR> Speakers, crossovers, and cabinet combination is the most important active speaker, active speaker sound quality is a decisive factor for the multimedia speaker, but decided that the combination of sound quality speaker .70% or more. .<BR>.