PAC AP4-GM61 Manual

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PAC-audio.com

Page 1

Rev: V3

Date:072618

Advanced Amplier Interface for

General Motors

AP4-GM61

The AP4-GM61 provides 6-channel pre-amp outputs (front and rear, left and right, along with a center channel output

and non fading output for subwoofer output) for use with aftermarket audio equipment. Using the full range, xed

level head unit output, in conjunction with MOST, the AP4-GM61 delivers variable 5v RMS pre-amp outputs with fading,

balance, equalization, and level control capabilities. The module also retains all audio from other vehicle features such

as factory navigation prompts, Bluetooth, OnStar, parking sensor chimes, safety alerts, reminders and infotainment. A

data controlled remote amplier turn on wire is also provided by the AP4-GM61. The module also provides a variable

2-channel ber optic digital audio output (TOSLINK).

Introduction and Features

Important Notes

1. This interface is only compatible in vehicles equipped with both Bose and the IO5 or IO6 8" radios. To verify the "IO" RPO

code on your vehicle, check the glove compartment for a silver sticker with these codes. If this sticker is not present, you

must scan the QR code on the GM label found in the driver's door jamb. The RPO codes will be listed in alphabetical order

in either scenario.

2. The factory amplier must remain in the vehicle, and connected, after the AmpPRO 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 remote output will be active whenever the vehicle's CAN-bus network is active (example: if the doors are unlocked

from keyfob). Even if the radio is not on, the remote output may be active. The remote output will turn off once the vehicle's

CAN-bus network goes to sleep. To verify, turn the ignition off, close all doors, and wait 5 minutes, then check if the

amplier is on without opening the vehicle's doors, trunk or tailgate.

5. Channel 5 is a variable volume, center channel output, and is derived from the in phase audio from the left and the right

channels. The center channel output level can be adjusted using the AmpPRO PC application. Please refer to the Setup

and Conguration section on page 3 for more details.

6. Channel 6 is a non-fading output (typically used for subwoofers). The output level of channel 6 can be adjusted at any time

using the supplied level control knob.

7. When the non-fading level control knob is not connected to the AP4-GM61, the output level of channel 6 will always be at

maximum.

8. The level control knob must be connected in order to manually adjust the chime volume and minimum volume settings.

9. The chime level in the radio's settings menu will not affect the chime level output from the AP4-GM61. Any chime audio

provided by the AP4-GM61 requires the chime level adjustment to be done using the procedure provided in the Setup and

Conguration section. If the factory amplier is being used for the front or rear speakers, the chime level for the factory

amplied speakers must be adjusted in the radio's settings menu. In some cases, it is necessary to adjust the chime level

through the radio settings menu as well as through the AP4-GM61. For example: If the AP4-GM61 outputs are only being

used on the front speakers, and the vehicle has rear parking sensors, adjustments would be made through the radio

settings and through the AP4-GM61. In this instance the rear parking sensor chime level would be adjusted through the

radio settings menu (since the reverse chimes play through the rear speakers), and any chimes coming through the front

speakers would need to be adjusted via the AP4-GM61.

10. By default,the chime volume is set to 60 percent (adjustable in 5 percent increments from 0 to 100) and minimum volume

is set to 0 db (adjustable in 2 db increments -20 db to +20 db). If you are happy with these levels in your particular

application, then no further adjustment is necessary. Please refer to the Setup and Conguration section on page 3 for

more details.

11. The factory radio's speed controlled volume and surround sound modes are not supported by the AP4 outputs.

12. When using the TOSLINK output, all chimes must be routed through the front output by setting DIP switch 1 on (down).

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

to a PC.

14. If the aftermarket amplier requires 2 channels of input from the non-fading, channel 6 output of the AP4-GM61, an RCA

"Y" adapter is required.

PAC-audio.com

Page 2

Rev: V3

Date:072618

Advanced Amplier Interface for

General Motors

AP4-GM61

Installation

1. Access the factory radio module (see location info in Figure 1, next page).

2. Disconnect the Gray 20-pin factory harness and the Gray 8-pin harness from the tuner module (Figure 2, next page).

3. Connect the AmpPRO harness to vehicle harness.

4. Connect the AmpPRO harness to factory tuner module.

5. Set any feature DIP switches that apply to your install.

a. DIP switch 1 is used for two channel mode. In this mode, both the TOSLINK and front RCA outputs (1 and 2) become

non-fading outputs. All rear chimes will also be routed through these outputs in two channel mode.

b. 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. See the troubleshooting section on page 5 for more details.

6. Connect the AmpPRO harness to the module.

7. Connect the level control knob to the module and install in an accessible location.

8. Connect the signal cables and remote input from the aftermarket amplier.

9. Turn the vehicle off, shut the doors and lock the vehicle with the factory keyfob. Wait 5 minutes. After 5 minutes, turn

vehicle back on, and proceed with setup and conguration.

DIP

1 2 3 4

Two Channel Mode 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

TOSLINK Output

Front Output

Ch. 1(L) and 2(R)

Rear Output

Ch. 3(L) and 4(R)

Non-Fading

Output Ch. 6

LED 2

Center Channel

Output Ch. 5

Wiring Connection Chart

*Non-Fading

Front

1(L) 2(R) 4(R) 5 63(L)

Remote Turn On Output

2A Max Output

Rear 5-Center 6-NF*

TOSLINK

Optional

AP4-GM61-HAR

To Tuner To Vehicle

Harness

Non-Fading

Level Control

Knob

To Aftermarket

Amplifier

Produkt Specifikationer

Mærke:	PAC
Kategori:	Ikke kategoriseret
Model:	AP4-GM61

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