Sennheiser manufactures a line of high-end stereo headphones for music lovers. The products are famous for delivering audiophile-quality sound. Like any other set of corded headphones, a Sennheiser set must be connected to an audio jack for listening in private. Since relatively few TV sets are equipped with a headphone jack, connecting Sennheiser headphones requires a Y-adapter that converts the two stereo outputs on a TV into a single phone jack to accommodate the Sennheiser. You can buy the adapter at electronics and stereo stores.
Insert the two plugs on the Y-adapter into the two audio output jacks on the back panel of the TV. The jacks will typically be colored white and red for left and right.
Insert the plug on the end of the Sennheiser headphones cable into the jack on the Y-adapter.
Turn on the TV and press the "Menu" button on the remote control, using the down arrow key to scroll to "Speakers."
Use the left and right arrow keys on the TV remote control to turn the built-in speakers on and off while listening to programming in private through the Sennheiser headphones.
If the TV is equipped with a headphone jack, a Y adapter is not needed.
Use the TV remote control to adjust the volume while listening through headphones.
Adjust the volume lower before putting on headphones to prevent hearing loss and damaging the headphones themselves if hit with a sudden power surge.