Purchasing Power Amplifier Elements - Amplifier, Speakers, Home Theater - Hc Network Appliance

AV amplifiers purchase difficult.

AV amplifiers purchase difficult.



Consumers should pay attention to, "Dolby Digital Dolby digital" with "Dolby surround sound Dolbysurround" is different. A Dolby surround decoder AV amplifiers can not Dolbydigital the audio decoding, while Dolbydigital AV amplifiers General decoders can decode Dolbysurround. So, if you look at DVD, with a decoder with only Dolbysurround AV amplifiers is of no use. Must be carefully inspected before buying AV amplifiers on LOGO and English words.



Dolby Digital (AC-3) What are the benefits? Dolby Digital uses five separate full frequency channels, that is, front left, right and left rear surround, right surround, and a sixth optional dedicated subwoofer channel, so it will call it 5.1 channel system. Because the subwoofer channel is very narrow band, frequency range limited to 20? 120Hz range, we can only count 0.1 channels. Increase dedicated subwoofer channel, the bass is more emotion and can easily show the film in the explosions, guns, shock produced a strong sense of audience. In short using the 5.1-channel surround sound system, making audio-visual status, phase properties and sound field more superior reproducibility, and easy to get the family in general and cinema like surround sound.



Dolby Digital separation between each channel indicators have reached unprecedented levels 105dB, to prevent crosstalk between the channels, eliminating the distortion between the effect of channel. DTS worked better. DTS uses the same system with Dolby Digital 5.1-channel format, but up to 8.1 channels. In the multi-channel approach, each channel do not have to do within the matrix method, also do not have to be taken between the different channels, "coupling" technology. This approach helps to improve the purity of sound, so that all audio signals decoded without distortion can be reproduced, which enhances the sense of space, feeling of depth and presence.



The sound quality, DTS compression ratio is low, a large space to accommodate the information, informative, more detailed sound, get higher than the fidelity of Dolby Digital. DTS systems in addition to LD, DVD discs, there are four-channel or six-channel recording of CD discs, Dolby Digital only player without a CD disc. DTS system software and hardware are printed on special signs DTS. Select the best features with DTS. Although very few discs with DTS capabilities, but the future is hard to say.



View of the DTS and Dolby Digital have been formed to rival the trend, the best advance that the purchase of AV amplifiers with a DTS decoder, so in the near future out of date. Second reason is the same grade AV amplifiers, multi-function of a DTS is not much more expensive price of about several hundred yuan. Five-channel power must be sufficient. Pay attention to when purchasing power is what standards, if there is a bracket behind the marked ELAJ, this is Japan's standards, the standards than the United States and China's standard of "continuous power," more. Buy new models as much as possible out. Because of complicated technical and AV amplifiers, which will soon introduce new IC chip, the new IC chip technology certainly better than the old chip, so the more new models to buy the more you can enjoy the new technology.



To buy fiber-optic lines. After buying the AV amplifiers remember to buy a fiber optic cable for connecting DVD players and AV center, or AV amplifiers can not use the Dolby Digital decoder.

by: gaga

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