You sure can. The SUBPAC makes a great addition to the experience of watching a movie!
The SUBPAC can be used in your home theater setup. It can receive a line-in signal from the discrete LFE channel or use an LT RT downmixed stereo signal and pass the low end to your body. If your surround system has a set of 6 line outs connect the one labeled sub or LFE to the appropriate adapter to feed the SUBPAC. Do not connect the SUBPAC to a speaker output from the amp. This will be too much voltage and may damage the unit. If your receiver does not have discrete connections look for a stereo line out or headphone out. These usually will contain an LT RT mix down of the surround sound along with plenty of BASS to feel.