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28楼
发表于 2024-5-31 23:24
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只看该作者
来自 广东省深圳市
他说的低切（Room Gain）是房间增益补偿，把引起房间轰隆隆的频率给切掉。
你要的低切，就是out上的高通，SVS这种AV炮一般没有。监听炮虽然都具备，对低端监听炮的分频效果和信噪比打个疑问。
我的SV1000P 试验过几种分频方案 http://www.tslt.tech/bbs/viewthread.php?tid=154645，效果一般。
最后不分频了，调了下相位，用SoundID把系统调平直，很赞。
How Does Room Gain Work?
PB16-Ultra Subwoofer
Room gain occurs in rooms of all sizes, but is most noticeable in smaller, enclosed rooms. When discussing room gain, it is related to the room's longest dimension, typically its length or width. (Few home theater rooms are taller than their length or width.) If the longest dimension of the room is less than 20 feet of so, it can provide a truly significant increase in bass output levels.
What's so special about 20 feet? It has to do with the length of low-frequency sound waves. It turns out that room gain begins at the frequency whose wavelength is twice the longest dimension of the room. Twice 20 feet is 40 feet, which is the wavelength of 28 Hz. So, in a room where the longest dimension is 20 feet, room gain kicks in at 28 Hz and below.
Of course, the longest dimension in many home-theater rooms is less than 20 feet, so room gain begins at a higher frequency. For example, if a room's longest dimension is 16 feet, room gain starts at 35 Hz (wavelength = 32 feet); if a room's longest dimension is 12 feet, room gain starts at 47 Hz (wavelength = 24 feet).
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