Need help connecting sub etc for TV sound..

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I'm having a brain freeze and need a bit of info about connecting a 2 channel stereo amp to this powered subwoofer that has a hi-pass filter for satelite speakers..
This will be a 2.1 sys for a TV etc .

Is the following correct?

1) TV audio Low-Level out goes to the sub Low- Level in.
2) The sub Low-Level out goes to the stereo amp Lo-level in.
3) The stereo amp speaker out goes to "Hi-Level speaker in" on the sub,
4) "Hi-Level speaker out" on the sub goes to the satelite speakers.

BTW, this is a "Dayton Audio SUB-80". I will be replacing the stock speaker with a "Tang Band W8-740p" for some really tight bass.

The stereo amp will be a 20w RMS per channel "Lepai Tripath TA2020 class T" amp.

I have not decided on the satelites yet but, I'm looking at the "Polk OWM3" speakers.
Any suggestions?

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