TDK Tremor S-150 User Manual page 7

Connect the green stereo mini-plug cable to the line IN
5)
connection of the subwoofer. Connect the other end of
the cable to the line out of your soundcard or other audio device.
If connecting the speaker system to a receiver
6)
or other component that uses RCA jacks, use
a mini-plug - to - RCA "Y" cable.
Plug the subwoofer's power cord into an available
7)
outlet or power strip and push the power switch ON.
(not included)