Using Headphones; Listening Safely - Optimus SYSTEM 739 Owner's Manual

13-1292.fm Page 6 Wednesday, July 14, 1999 6:37 PM

USING HEADPHONES

You can use headphones (not sup-
plied) to listen in privacy. Insert the
headphones' 1 / -inch plug into the
8
jack on the front of the
PHONES
system.
Notes:
• Your local RadioShack store sells
a wide selection of headphones.
• Plugging in headphones automati-
cally disconnects the speakers.
6

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
permanent 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.