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Tunina on the Am~lifier
The amplifier automatically turns on within a few seconds after remote voltage Is applied.
If your system
is
set-up so that the headunit provides the remote voltage; then
it
would
turn on when your
stere6 is turned on. Note that there are alternate means of providing
the
12
volt remote control signal, including installing and auxiliary switch.
Adjusting The Audio Level
--
-
-
-
--
--
As
stated previously, it
is
important to obtain a close match between the source
unit's output voltage and the amplifier's sensitivity or admittance setting.
1.
Use a screwdriver to turn GAlN (MIN
I
MAX) fully counterclockwise to MIN.
2.
Turn the auto sound system's volume control to about one-third of its full range.
3.
Adjust GAIN (MIN
I
MAX)
to a comfortable listening level.
4.
Turn up the auto sound system's volume control until the sound begins to distort.
Then immediately turn the volume down to a point just before where the
distortion began.
Caution
:
Never
turn
up the auto sound system's volume control more than
needed to adjust the audio level, more than two thirds of Its
maxlmum volume.
5.
Adjust GAIN (MIN
/
MAX) until the sound
is
at the maximum level you want the
amplifier to produce.
6.
Adjust the auto sound system's volume control to a comfortable listening level.
FREQUENCY RESPONSE BASS BOOST ON
+20dB
+lOdB
B
-
ode
z
a
-1OdB
W
IY
-2OdB
-30dB
10 42 100 500 1K 5K 20K SOK
FREQUENCY
(Hz)
NOTE: Raising the Bass frequency allows 'higher frequencles to reach the bass speakers
while blocking lower frequencies from midrange speakers. Lowering the Bass
frequencies allows lower frequencies
to
reoch the mldrange speakers while
blocking higher
frequencles from bass speakers.
Trouble
______-
Shooting
-
SYMPTOMS
NO
SOUND
AMP NOT
ON
NO SOUND
IN ONE
AMP TURNING
OFF
MEDIUM
/
HIGH
VOLUME
PROTECTION
LAMP ON
CHECK
1s
the power
LED illuminated?
(NO)
Is the Diagnostic
LED illuminated? (YES)
No power to power wire
NO
power to remote
wire with receiver on
Burnt or broken fuse
Check Speaker Leads
'
Check Audio Leads
Check Speaker load
impedance
Shut down
Speaker wires shorted
REMEDY
Check all fuses to amplifier.
Be sure Turn-on lead
is
connected
check signal leads.
Check gain control.
Check
TunerIDeck volume level.
Clean contacts on fuse holders.
Check for speaker short or
amplifier overheating.
Repair power wire or connections.
Check connections to radio.
Replace fuse
Inspect for short
circult or an
open connection.
Reverse Left and Right RCA inputs
to determine if the problem
is
occurring before the amp.
Be sure proper speaker load
impedance recommendations
are observed.
(If you use an ohmmeter to check
speaker resistance, please
remember that DC resistance and
AC impedance may not be the same.)
Turn radio down
Wait for AMP to cool
Separate speaker wires and
insulate