Yamaha AVR htr-5630, Yamaha subwoofer SW-P130, Vizio E48-C2

Solution
Wiring should be easy. Connect the subwoofer to the subwoofer output on the receiver. Go into the speaker set up menu of the receiver and turn the sub out on. Set the sub level to your liking. Depending on the other speakers it may not match well.
If you hear bass out of it but it makes scratching or distorted sound it either can't play loud enough or is damaged.
Wiring should be easy. Connect the subwoofer to the subwoofer output on the receiver. Go into the speaker set up menu of the receiver and turn the sub out on. Set the sub level to your liking. Depending on the other speakers it may not match well.
If you hear bass out of it but it makes scratching or distorted sound it either can't play loud enough or is damaged.
 
Solution