Input Wiring & Controls - Phase Linear UPA224 Manual Del Usario

INPUT WIRING & CONTROLS
Low Level Input (LOW-INPUT)
Low level (RCA) input is preferred for best
performance. Most trunk/hatchback
installations require a 15-20 foot RCA cable,
while pickup trucks and under-seat mounting
require a 6-12 foot RCA cable. Connect an
RCA cable from your receiver to the RCA input
on your amplifier.
Input Level (LEVEL)
The input level control matches the radio output
to the amplifier input. After installation, turn the
input level control all the way to the left, then
insert a tape or CD. Make sure the bass and
LEVEL
POWER
UPA424
MIN
LEVEL
POWER
UPA224
MIN
treble or EQ settings are flat, then turn the
volume up slowly until you hear distortion. Turn
the volume down slightly. To match the amplifier
input, slowly increase the amplifier input level
control (turn clockwise) until you hear distortion,
then turn it down slightly. After completing this
process, your amplifier levels will be matched.
High Level Input (HIGH LEVEL)
High level input should be used when an RCA
output is not available from the receiver.
LOW-INPUT HIGH LEVEL
CH1 CH3 CH1/2INPUT CH3/4INPUT
+ - + - + -
MAX
CH2 CH4
LOW-INPUT HIGH LEVEL
CH1 CH1/2INPUT
+ - + -
MAX
CH2
NOTE: Only connect the RCA OR High-Level
Input – not both at the same time.
Connect the speaker outputs from the receiver
to the high level input connector, then plug the
connector(s) into the "HIGH INPUT" outlet(s) on
the end of the amplifier.
White Wire
White/Black Wire
Gray Wire
Gray/Black Wire
Black Wire
NOTE: The black wire from the high-level
+ -
input harness MUST be grounded for the
high-level input circuit to operate properly.
6
UPA224/UPA424
Wiring Harness Color Codes
Left Channel Positive (+)
Left Channel Negative (-)
Right Channel Positive (+)
Right Channel Negative (-)
Chassis (Power) Ground