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PAC-Audio.com
Pacific Accessory Corporation
Page 2
Rev: V1
Date: 020924
Advanced Subwoofer Amplifier Interface
for Select Chrysler / Dodge / Jeep / RAM Vehicles
APSUB-CH42
Setup and Configuration
1. Turn the ignition on. LED 1 on the interface will turn on and the +12v remote output will turn on.
2.
Set the amp gain(s) to the desired level. We recommend using an oscilloscope and test tones to set the amp gain(s).
Please refer to the MECP Advanced study guide (p. 360) if you are unfamiliar with this process.
3. Check volume, balance, fade and EQ settings.
4.
If you would like to adjust the minimum volume, do so using one of the methods outlined on the next page. If you are happy
with the default levels, no adjustments are necessary.
Manually Setting the Minimum Volume (optional)
If the minimum volume of the radio (factory radio volume level 1) is too loud or too quiet, you can manually set the level of the
minimum volume using either the programming button on the side of the interface or the radio dash panel controls. If you would
like to set the minimum volume using the AmpPRO PC app, please proceed to the AmpPRO PC app section.
Installation
DIP
1 2 3 4
ON
No Function
5v / 4v Preout
No Function
No Function
1
2
3
4
Set DIP switches to the ON position to activate the corresponding features.
Set DIP switches to the OFF position for any features that are not desired.
Module Layout
Interface Connector 1
Expansion Port
Programming Button
Feature Select
DIP switches
Non-Fading Level Control
Knob Connection
USB Connection
LED 1
Subwoofer Output
LED 2
1.
Remove factory radio.
2. Disconnect the main 32 & 12-pin factory harness connector from radio.
3.
Connect APSUB harness to vehicle harness.
4. Connect APSUB harness to factory radio.
5.
Set any feature DIP switches that apply to your install.
a. Set DIP switch 2 on (down) to lower the RCA output voltage to 4v. Leave DIP switch 2 off (up) to keep the
RCA output voltage at 5v.
b. DIP switches 1, 3, and 4 are not used.
6. Connect the APSUB harness to the module.
7. Connect the level control knob to the module and install in an accessible location.
8.
After the aftermarket amplifier power/ground connections are made, c
onnect the signal cables and remote input from
the aftermarket amplifier to the APSUB.
9. Reconnect any additional harnesses removed from the radio and reinstall the radio.