Connecting Headphones; Listening Safely - Optimus Concertmate 410 Owner's Manual

42-4031.fm Page 7 Wednesday, August 11, 1999 4:22 PM
illustration
1. Plug the 5.5 mm outer-diameter/
2.1 mm inner-diameter barrel plug
into the cable so it reads +TIP.
2. Set the adapter's voltage switch to
9 volts.
3. Insert the adapter's barrel plug
into the jack on the back of
DC9V
the Concertmate 410.
4. Plug the other end of the adapter
into the vehicle's cigarette lighter
socket.
CONNECTING
HEADPHONES
To listen to your Concertmate 410
without disturbing others, you can con-
nect a pair of stereo headphones with
a 1 / -inch plug (not supplied). Your lo-
8
cal RadioShack store sells a wide se-
lection of headphones.
To connect a pair of headphones, in-
1
sert the headphones'
the jack on the back of the key-
PHONE
board.
illustration
Note: Connecting headphones dis-
connects the Concertmate 410's built-
in 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.
/ -inch plug into
8
7