Linear Power PA-2 AudioPath Enhancer, Operation & Installation Manual

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The EQ controls can affect the optimum input gain setting. See the section on
INPUT GAIN ADJUSTMENT in this manual in order to get the best performance
out of your
PA-2
©
.
POWER INDICATOR : The red clip indicator will light at signal levels greater than
5Vrms even though the PA-2
©
does not actually clip until the signal level is
approximately 10Vrms. The 5Vrms signal level was chosen by our engineers in
order to provide your car audio system with excellent channel separation and
great power supply noise isolation while still providing a high output signal level
for driving the audiopath to your amplifiers. If the clip indicator is constantly
flashing or staying on steadily, readjust the input gain controls in the top cover of
the
PA-2
©
as outlined in the INPUT GAIN ADJUSTMENT section of this manual.
The clip indicator should flash occasionally on musical peaks to obtain optimum
performance with
LINEAR POWER™ amplifiers.
INSTALLATION OF THE PA-2© IN YOUR SYSTEM
POWER CONNECTION: Connect the red wire labeled bat on the top cover to
one end of a 500mA AGC style fuse. Connect the other end of the 500mA AGC
style fuse to the exact same location that the head unit receives its constant
power.
GROUND CONNECTION: Connect the black wire labeled gnd on the top cover
to the exact same location the head unit is connected to ground.
REMOTE TURN-ON CONNECTION: Connect the blue wire with the white stripe
labeled rem on the top cover to the power antenna or remote turn-on output on
the head unit whose signal is connected to the source 1 input . This input wire
turns on the PA-2
©
. It is not an output wire as in previous versions of the PA-2
©
.
SOURCE SELECT CONNECTION: If you are using two head units (e.g. cassette
and CD) in your system, connect the white wire labeled src2 to the power
antenna or remote turn-on output of the head unit whose signal is connected to
the
source 2/fader input . When the head unit connected to the source 2/fader
input is turned on the source 2/fader input on the PA-2
©
will automatically be
selected. When the head unit connected to the source 2/fader is turned off, the
source 1 input on the
PA-2
©
will automatically be selected. Alternatively, the src2
wire can be connected to an external switch. When this switch supplies +12Vdc
to the src2 wire, the source 2/fader input on the PA-2
©
will be selected. When
this switch supplies 0Vdc to the src2 wire, the source 1 input will be selected.
INPUTS/OUTPUTS: The RCA (phono) jacks will accommodate signal levels from
100mV RMS to 10V rms. To minimize system noise, avoid routing signal cables
near power wires, power connections, speaker wires, engine alternator, or fire
wall of the vehicle.
© 2008 Linear Power, Inc. - ALL RIGHTS RESERVED
LINEAR POWER™ is a trademark of Linear Power, Inc.
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