Optimus 744 owner manual Connecting Headphones, Listening Safely

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2.Insert the batteries into the com- partment as indicated by the polarity symbols (+ and –) marked inside.

3.Replace the cover.

Caution: Always dispose of old bat- teries promptly and properly; do not bury or burn them.

Notes:

•If you will not be using the remote control for a month or more, remove the batteries.

•If the remote control does not work or has poor range, replace both batteries.

CONNECTING

HEADPHONES

To listen without disturbing others, you can connect a pair of stereo head- phones with a 1/4-inch plug (not sup- plied) to the system. Your local RadioShack store has a wide selec- tion of headphones.

To connect headphones, insert the headphones’ 1/4-inch plug into the PHONES jack on the front of the sys- tem.

(illus)

Note: Connecting headphones auto- matically disconnects the system’s speakers.

Listening Safely

To protect your hearing, follow these guidelines when you use headphones.

•Set the volume to the lowest set- ting before you begin listening. After you begin listening, adjust the volume to a comfortable level.

•Do not listen at extremely high volume levels. Extended high- volume listening can lead to per- manent hearing loss.

•Once you set the volume, do not increase it. Over time, your ears adapt to the volume level, so a volume level that does not cause discomfort might still damage your hearing.

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