Yes, by using the manual setup procedure it is possible to increase the signal volume level to the subwoofer, while reducing the level on the subwoofer itself. The reason it switches off is that the standby sensing circuit cannot sense music when the level is very low. By increasing the volume to the subwoofer and reducing its output on the sub itself, the signal sensing circuit has a better chance of recognizing an incoming signal, preventing the sub from switching off.