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以 VCD 为软件的“家庭影院”受到国人无以复加的青睐,除了系统成本低、丰富多彩而价廉的影视软件外,其主要原因还在于它的音响效果——环绕声和超低音的魅力十分诱人。大家知道,多数 AV 功放都设有一路“超低音”输出,就是专供外接超低音功放和超低音声箱使用的。虽然市场上有各种各样带超低音功放的“有源超低音声箱”《俗称“低音炮”)可供配接使用,但价格不菲,且大多不易与 AV 功放取得良好的频响匹配,因此自制超低音声箱是一个简单有效的解决方案。也许有人认为自制超低音声箱难以保证质量。其实不然,由于它不涉及中高音频段,设计和调整比人们想象的要容易,至少比制作全频带二分频声箱来得容易,尤其是超低音密闭箱的设计、制作和调整更适合业余制作。本文从最容易制作成功出发,以简洁明了的方式介绍超低音密闭箱的实用计算。力求使初学者也能掌握运用。全文分为上、中、下三部份,将分期连载。
Home Theater, with VCD as the software, is overwhelmingly popular with Chinese people, except for its low system cost, colorful and inexpensive video software, and its main reason is its sound quality - the charm of surround sound and subwoofer is very attractive people. We all know that most of the AV amplifier has a “subwoofer” output, is designed for external subwoofer amplifier and subwoofer use. Although there are various types of “active subwoofer” and “subwoofer” with subwoofers on the market for mate use, they are expensive and most are not easy to get a good frequency response with the AV amplifier Matching, so a homemade subwoofer is a simple and effective solution. Some people may think that homemade subwoofer hard to guarantee quality. In actual fact, because it does not involve the high frequency band, the design and adjustment easier than people think, at least easier than making full-band two-way sound box, especially the design, production and adjustment of subwoofer more suitable for amateur production . Starting with the easiest to make, this article introduces the practical calculation of a subwoofer enclosure in a concise and easy way. Strive to make beginners can master the use. The full text is divided into upper, middle and lower three parts, will be staged in series.