樓主不用拆了
剛找到一篇文章
http://www.digit-life.com/articles/...1das/index.html
裡面有寫這段
On the rear panel of the central speaker there are:

* one analog input, linear stereo with RCA connectors
* two digital inputs: optical (Toslink) and coaxial (RCA S/PDIF)
* five amplifying outputs (for 4 satellites and a subwoofer).
那就是擴大機在中央聲道中
很抱歉樓主的想法沒辦法實現了