Bad idea powered speakers into amp?

kookehs

Honorable
May 18, 2013
2
0
10,510
I have an old Logitech LS2.1, it has a built in amp in it, and I wanted the output from the subwoofer to go into my new amp and then from the amp to my speakers. The Lepai lp-2020a+ is this a bad idea?
 

kookehs

Honorable
May 18, 2013
2
0
10,510


Sorry I was unclear. I just wanted the lower range frequency from the sub. My speakers only cover 70-20Hz, while the sub covers a lower range. I don't believe the line out on the sub is info only.