PAC APSUB-CH41 Instruction Manual Download Page 1

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PAC-Audio.com

Pacific Accessory Corporation

Page 1

Rev: V1

Date: 091120

Advanced Subwoofer Amplifier Interface 

for Select Chrysler / Dodge / Jeep Vehicles

APSUB-CH41

To Aftermarket

Amplifier

Subwoofer Outputs

Remote Turn On Output

2A Max Output

APSUB-CH41-HAR

To Radio

To Vehicle

Harness

Non-Fading

Level Control 

Knob

Introduction and Features

Important Notes

Wiring Connection Chart

To Factory

Amplifier

To Amplifier

Harness

 ANC-CH02-HAR

The aftermarket amplifier must have a very solid ground and the amplifier power/ground connections 

should be made before connecting the RCA's or Remote Turn On to the APSUB-CH41

The APSUB-CH41 provides a 2-channel non-fading pre-amp output for use with an aftermarket amplifier and 

subwoofer. Using the full range, fixed level head unit output, in conjunction with CAN messages, the APSUB-CH41 

delivers a low pass variable 5v RMS pre-amp output with bass equalization and level control capabilities. The signal 

has a 350Hz / 24dB Linkwitz-Riley low pass filter applied. A data controlled remote amplifier turn on wire is also 

provided by the APSUB-CH41. 

1. 

This interface is only compatible in vehicles equipped with a data-bus controlled amplified sound system. To verify 

compatibility, look for an Alpine, Beats, or Harmon Kardon badge on the door speakers, center speaker, or factory 

subwoofer. If none of these brands are shown; check for the presence of a center speaker or subwoofer.

2. 

The factory amplifier must remain connected, and in the vehicle after the APSUB-CH41 has been installed.

3.  The remote output is rated at 2A of current. If more current is needed an external relay must be used.

4. 

The subwoofer outputs are non-fading. The output level of the subwoofer channel can be controlled using the supplied 

level control knob. If the level control knob is not connected the output level will default to 100%.

5.  The minimum volume level is set to a default. If you are happy with this level in your particular application then additional 

adjustment is not required. Please refer to the Setup and Configuration section on page 2 for more details.

6.  The level control knob must be connected in order to manually adjust the minimum volume setting.

7. 

No adjustments can be made manually using the programming button or the factory SWC when the module is connected 

to a PC.

8.  If the vehicle is equipped with Active Noise Cancellation (ANC), the ANC can be disabled using the included ANC-CH02 

harness. See page 3.

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