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Overview: The PAC 4CH Programmable Source Unit Interface (SOEM-4) is a
4-channel premium line-output converter with a remote turn-on trigger. The PAC
SOEM-4 is a one-device solution for today's OEM/Aftermarket vehicle sound
systems. It features programmable input and output circuitry with slide
switches, which allows connection of RCA level or speaker level input and
output. DC coupling circuit ensures noise free integration and no load induced
on the factory system (this is in contrast to a normal LOC which uses resistors
and can stress a factory radio's circuitry).
Optimal Sound Performance: The PAC SOEM-4 is transformer isolated for
optimal sound and performance. The SOEM-4 maintains correct phasing and is
capable of supporting a 20 to 20,000Hz audio signal.
Switchable Input/Output Signal: The PAC SOEM-4 includes one low-level
RCA harness and two high-level speaker harnesses. The included harnesses along
with the top-mounted Input/Output switches allow you to select the type of input
and output signal going in and out of the SOEM-4 interface. You can choose
either low-level (RCA) or high-level (speaker wire).
Note: 4-volt minimum RCA level, if using RCA signal as input.
Remote Turn-on Trigger: The PAC SOEM-4 provides 12v amplifier turn-on
trigger wire. The SOEM-4 utilizes signal sense to detect when audio is present
in the device, and creates a 12V output usable for triggering an external
Output Level Adjustment: The PAC SOEM-4
line-output converter is equipped with output level controls that can be
adjusted for proper sound level matching, for each channel (LF, RF, LR, and RR).
This is done by inserting a small flat-blade screwdriver into the gain
adjustment holes, located on top of the SOEM-4. By turning clockwise, the gain
for that individual channel, or the amount of sound allowed to pass through the
SOEM-4 is increased. By turning counterclockwise, the gain for that individual
channels is decreased.
Rear Installation:The PAC SOEM-4 can be connected in the
rear of the vehicle for convenient amplifier installation. When this item is
used as a factory amp interface, it locates behind the new radio.
Mounting: The SOEM-4 line-output converter features integrated
mounting flanges and comes supplied with four mounting screws to mount the
interface in your vehicle.
- Low Level Harness:
- 12V Power (yellow)
- Ground (blue/black)
- Remote turn-on (blue)
- RCA LF (left front)
- RCA RF (right front)
- RCA LR (left rear)
- RCA RR (rear rear)
- Speaker Level Harness
- LF+ (white)
- LF- (white/black)
- RF+ (gray)
- RF- (gray/black)
- Ground (black)
- LR+ (green)
- LR- (green/black)
- RR+ (purple)
- RR- (purple/black)