It's not ideal to connect a sub to an AV receiver. You may need to conceal a part of the cable, or find a shorter one to place in the right spot. Let's be honest, it's not fun to crawl on your knees and lay cables. !There are many subwoofers that work wirelessly. However, they must still be connected to an electrical socket. This is how it works: instead of plugging in a cable to your AV receiver you attach a transmitter.Without the need for an audio cable, the transmitter box sends the signal directly to the sub. Some manufacturers include the accessory with their subs, others make it available as an option.You don't have to worry about it not being wireless, as you can purchase a universal wireless kits that will transform most subs into wireless units.