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注意一下，原本的2ch论坛已经分裂了，2ch.sc和 5ch.net，后者更大程度继承了原版的风格，网站知名度和活跃度均是后者占优，因此首推 5ch.net. 学习就是从合适数量的例子中发现尽可能普遍的规律。 百度就能解决的事，就不要上知乎提问了。

2020年3月5日 · Well first, rear surrounds are part of a 7ch system while a 5ch just uses surrounds. Just clarification for moving ahead. So the def tech in walls you linked would be fine but having driver sizes that fall in between certain sizes is unnecessary.

2ch和5ch是两个不同的日本论坛网站，它们在多个方面存在差异：1. 历史与命名变更:* “2ch”最初是在1999年由西村博之（俗称ひろゆき,Hiroyuki）创建的 2楼 2023-12-31 04:40

2006年4月18日 · 2ch是1999年开的纯文字匿名讨论版，2017年后改名5ch 双叶频道在2001年作为2ch的避难所开设，是用户可上传图片的贴图讨论版，有别称2chan，不过容易和2ch搞混 4chan是2003年仿照双叶频道开设的贴图讨论版

6 Channel Wireless Rear Speakers with Up-firing Height Channels; Dolby Atmos¹ & DTS:X² with Upward Firing Height Channels; Meridian Audio Technology; Dolby Vision, 4K and HDR10 Passthrough or Gaming Enhanced - VRR⁴ & ALLM Passthrough; Apple Airplay 2, Amazon Alexa, Google Assistant Supported³

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3689 5ch products are offered for sale by suppliers on Alibaba.com, of which portable monitors accounts for 1%.