PAC AP4-CH41 R2 Installation Manual

AP4-CH41 (R.2)
Introduction and Features
The AP4-CH41 provides a 6-channel pre-amp output for use with aftermarket audio equipment. Using the full range, fixed
level head unit output, in conjunction with CAN messages, the AP4-CH41 delivers a variable 5v RMS pre-amp output with
fading, balance, equalization, and level control capabilities. The module also retains all audio from other vehicle features
such as factory navigation prompts, Bluetooth, uConnect, and parking sensor chimes. A data controlled remote amplifier
turn on wire is also provided by the AP4-CH41. When used in conjunction with the APA-TOS1 (sold separately), the module
can provide a variable 2-channel fiber optic digital audio output (TOSLINK).
Important Notes
1. These instructions only apply to R.2.1.4.16 or later revisions of the AP4-CH41.
2. Compatible with both amplified and non-amplified factory systems.
• Amplified Vehicles
• Compatible with all data-bus controlled amplified systems, no matter the screen size (including the 12" screen). To
identify these systems, look for logos on door speakers, tweeters, dash speakers or the subwoofer to confirm if the
vehicle has an amplified system (Alpine, Beats, or Harmon Kardon). Some vehicles may not always have branded
systems. Unbranded amplified systems are generally identified by locating a center channel speaker or subwoofer
• Non-Amplified Vehicles
• Jeep Wrangler: Compatible with all screen sizes (5", 7" and 8.4").
• All other models: Only compatible in vehicles equipped with the 7" or 8.4" screen. Vehicles equipped with the 5"
screen are not compatible.
• If you are installing the AmpPRO in a vehicle that is not equipped with a factory amplifier, you must add an amplifier
to the vehicle's speakers, as the factory radio will no longer have a 4 channel variable output after it has been re-
configured by the AmpPro. For example, you can not add only a subwoofer to a non-amplified vehicle, as the radio
will no longer power the cabin speakers properly.
• Non-amplified vehicles equipped with an Active Noise Cancellation (ANC) system require the ANC module to be
bypassed. This can be done manually or with the ANC bypass harness ANC-CH01. The following vehicles have an
ANC module that needs to be bypassed:
• 2019-2021 RAM Truck
• 2017-2019 Pacifica
• See page 2 Step 6d to re-configure the factory radio.
3. If a factory amplifier is present, it must remain connected and in the vehicle after the AmpPRO has been installed.
4. The remote output is rated at 2A of current. If more current is needed an external relay must be used.
5. Channels 5 and 6 are non-fading outputs. The output level of channels 5 and 6 can be controlled using the supplied level
control knob.
6. The chime volume and minimum volume levels are set to 0 dB by default. If you are happy with this level in your particular
application, additional adjustment is not required. Please refer to the Setup and Configuration section on page 2 for more details.
7. The level control knob must be connected in order to manually adjust the chime volume and minimum volume settings.
8. The factory radio's speed controlled volume and surround sound mode are not supported by the AP4 outputs.
9. When using the TOSLINK output (APA-TOS1 sold separately), DIP switch 1 must be on in order for all warning chimes to be
heard through the sound system (see page 2 Step 6a for details).
10. No adjustments can be made manually using the programming button, or the factory SWC when the module is connected to
a PC.
Module Layout
Interface Connector 1
Expansion Port
Programming Button
USB Connection
Pacific Accessory Corporation
Feature Select
DIP switches
Non-Fading Level Control
Knob Connection
© 2022 AAMP Global. All rights reserved. PAC is a Power Brand of AAMP Global.
Advanced Amplifier Interface for
Chrysler / Dodge / Jeep / RAM
TOSLINK Output
(APA-TOS1 sold separately)
Front Output
Ch. 1(L) and 2(R)
Rear Output
Ch. 3(L) and 4(R)
Non-Fading Output
Ch. 5(L) and 6(R)
LED 1
LED 2
Rev. V13
Page 1
Date: 062322