Radio Shack XL-150 - Manual (Page 18)

18
OPERATION
TURNING ON THE
AMPLIFIER
The amplifier automatically turns on a
few seconds after you turn your vehi-
cle’s ignition switch to ACC or ON, or
turn on your autosound system, de-
pending on how you wired the system.
The POWER indicator on the side of the
amplifier lights when the amplifier is on.
Important: Your amplifier requires 25
amps or more of power from your vehi-
cle’s battery during operation. To pro-
tect your battery from discharging, do
not operate the amplifier unless your
vehicle is running.
Note: Your amplifier temporarily shuts
down if it gets too hot, then restarts au-
tomatically once it cools.
ADJUSTING THE AUDIO
LEVEL
For the best performance, you must
set
LEVEL (MIN/MAX) on the end of the
amplifier to adjust the level of the audio
signals that enter the amplifier.
(illustration)
1. Use a screwdriver to turn both
LEVEL (MIN/MAX) controls fully
counterclockwise to MIN .
2. Turn the autosound system’s vol-
ume control to about one-third of
its full range.
3. Adjust both LEVEL (MIN/MAX) con-
trols to a comfortable listening
level.
4. Turn up the autosound system’s
volume control until the sound
begins to distort. Then immedi-
ately turn the volume down to a
point just before where the distor-
tion began.
Caution: Never turn up the auto-
sound system’s volume control
more than needed to adjust the
audio level, or more than two-
thirds of its maximum volume.
5. Adjust both LEVEL (MIN/MAX) con-
trols until the sound is at the maxi-
mum level you want the amplifier
to produce.
6. Adjust the autosound system’s
volume control to a comfortable
listening level.
(illustration)
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