#Plug making high pitched noise install#

Reverse the AC plug for your A/V receiver or subwoofer (If this plug is a 3-wire plug, you wonвЂ™t be able to reverse it).Plug the subwoofer into a separate outlet from the rest of your setup.Finally, you can test these other procedures if you donвЂ™t have access to a ground isolator:.If the buzz remains even after youвЂ™ve disconnected the TV, youвЂ™ll need a ground isolator between the subwoofer and your A/V receiver.

Check reviews before making your purchase to ensure that your system is compatible. One issue to consider is that transformer-based isolators are universally compatible with analog feeds, but may interfere with HDTV signals.

#Plug making high pitched noise install#

If the hum disappears, the solution is to install an in-line ground isolator.Reconnect the subwoofer from its input to the receiverвЂ™s output and disconnect the offending feed from the outboard box or tuner (disconnect the cable before any splitters).In heavy industrial and manufacturing environments, as well as other situations. If it does, the ground loop is probably coming in through your cable/satellite feed. It is also very delicate: this is why loud sound may damage hearing. Unplug the coaxial cable connected to your subwoofer and determine if the buzz vanishes. The main culprits are your subwoofer and cable or the satellite box feed at the entrance to your system.HereвЂ™s a troubleshooting procedure to determine what the cause of your ground loop is and what you can do about it: