Instruction Manual for AXXESS models including: AXDSPX-GL44, GM DSP Interface with Pre-Wired Harness, AXDSPX-GL44 GM DSP Interface with Pre-Wired Harness, Pre-Wired Harness, GM DSP Interface

AXDSPX-GL44

MOBILE APP. Setup Instructions. • General information tab for installing the interface. Continued on the next page. Page 6. 6. MOBILE APP (CONT.) Bluetooth Connection. • Scan- ...

Instructions

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INSTAXDSPX-GL44 web
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AXDSPX-GL44
INSTALLATION INSTRUCTIONS

GM DSP Interface With Pre-Wired Harness 2012-2017
INTERFACE FEATURES
· Includes a DSP (Digital Signal Processor) · 31 Band graphic EQ · 10 individually assignable outputs · Independent equalization on each of the 10 outputs · Independent high pass, low pass, and bandpass filters · Each channel can be delayed independently up to 10ms · Clipping detection and limiting circuits · Retains factory parking sensor chimes · Retains OnStar® voice prompts · Adjustable chime level · Can be used in amplified and non-amplified models · Easy behind the radio installation with pre-wired harness · Bass knob included for level control of subwoofer amp · Settings adjusted via Bluetooth® in a smart device application (tablet
or mobile phone), compatible with both Android and Apple devices · Read, write, and store configurations for future recall · Password protect feature available in the mobile app · Micro-B USB updatable

TABLE OF CONTENTS
Installation Options ...............................................2 Installation .............................................................2 Connections........................................................ 3-4 Mobile App ........................................................ 5-13 Specifications....................................................... 14

INTERFACE COMPONENTS
· AXDSPX-GL44 interface · AXDSPX-GL44 interface harness · AXDSPX-GL44 vehicle T-harness · Bass knob

TOOLS & INSTALLATION ACCESSORIES REQUIRED

· Crimping tool and connectors, or solder gun,

solder, and heat shrink · Tape · Wire cutter · Zip ties · Multimeter

Google Play Store

Apple App Store
iOS 12.1 or higher

© COPYRIGHT 2020 METRA ELECTRONICS CORPORATION

REV. 7/30/20 INSTAXDSPX-GL44

INSTALLATION OPTIONS
Adding a sub to a factory system: This feature offers the ability to add a subwoofer to a factory system, whether amplified or nonamplified. (refer to page 3)
Adding a full-range amp & sub to a factory system: This feature offers the ability to add a full-range amp and sub to a factory system, whether
amplified  or non-amplified. (refer to page 4)  For amplified models the amp must be bypassed/unplugged, and With OE Amplifier chosen in
the Configuration tab under Vehicle Type.
Note: The interface provides a 12-volt 1-amp output to turn on aftermarket amp(s). If installing multiple amps, an SPDT automotive relay will be required if the amp turn-on current of all amps combined exceeds 1-amp. Use Metra part number E-123 (sold separately) for best results.

INSTALLATION
1. Remove the factory radio , then unplug all connectors. 2. Install the AX-DSPX-GL44 vehicle T-harness to the vehicle and make all necessary
connections, but leave the amp turn-on wire disconnected. 3. Plug the AX-DSPX-GL44 vehicle T-harness to the AX-DSPX-GL44 interface. 4. Plug the AX-DSPX-GL44 interface harness to the AX-DSPX-GL44 interface. 5. Download and install the AXDSP-X app from the Google Play Store or Apple App
Store. 6. Open the app then select the Bluetooth Connection tab. Follow the instructions to
pair the mobile device to the interface. Refer to page 6 for more information. 7. Scroll to the Configuration tab then select the vehicle type. Press the Lock Down 
button to save the configuration. Refer to page 7 for more information. 8. Connect the amp turn-on wire. 9. Adjust the settings in the app as desired. Press the Lock Down  button to save any
new configurations.
 Refer to Metra online for dash disassembly. If Metra makes a dash kit for the vehicle, disassembly will be within those instructions.
 Anytime the interface is locked down the key must be cycled off then back on

2

Factory Radio Harness

ADDING A SUB TO A FACTORY SYSTEM

Factory Radio

Bass Knob

Any remaining wires tape off and disregard

Black - Ground Orange - Control

Interface

Vehicle T-Harness
Keep Connected Any remaining wires tape off and disregard

These outputs can be used for additional sub amps, or for adding onto the system at a later date
RCA Jacks (sold separately)

Blue/White - Amp Turn-On Wire
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ADDING A FULL-RANGE AMP & SUB TO A FACTORY SYSTEM

Factory Amp Bass Knob
If equipped, bypass and remove

Factory Radio

RCA Jacks (sold separately)

Black - Ground Orange - Control

Any remaining wires tape off and disregard

Factory Radio Harness Interface
4

Vehicle T-Harness

Unplug connector

Any remaining wires tape off and disregard

Interface Harness

SUB

Assignable Outputs Labeled CH 6-10

Cut the male connector off and connect speaker
wires to amp (non-amplified models only)

White / Front Left + White/Black / Front Left -
Gray / Front Right + Gray/Black Front Right -
Green / Rear Left + Green/Black / Rear Left -
Purple / Rear Right + Purple/Black / Rear Right -

An SPDT relay, Metra part number E-123, is required if the amp turn-on current of all amps exceeds 1-amp.

Blue/White - Amp Turn-On Wire

Setup Instructions

MOBILE APP

· General information tab for installing the interface.

Continued on the next page
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Bluetooth Connection

MOBILE APP (CONT.)

· Scan - Press this button to start the Bluetooth pairing process, then select the interface once it is found. "Connected" will appear in the top left corner of the app once paired.
Note: The ignition must be cycled on during this process.

· Disconnect - Disconnects the interface from the app.

Continued on the next page

6

Configuration

MOBILE APP (CONT.)

· Identify - Click this button to send a test tone to the front left speaker*. * Only installations using the front left output (white RCA jack).
· Reset to Defaults - Resets the interface to factory settings. During the reset process the amp(s) will shut off for 5-10 seconds.
· Vehicle Type - Select the vehicle type from the drop down box, then click the apply button. · Lock Down - Click this button to save the selected settings.
Attention! This must be done before closing the app or cycling the key otherwise all new changes will be lost!

· Save Configuration - Saves the current configuration to the mobile device.

· Recall Configuration - Recalls a configuration from the mobile device.

· About - Displays information about the app, vehicle, interface, and mobile device.

· Set Password - Assign a 4-digit password to lock the interface. If no password is desired, use

"0000". This will clear out any currently set password. It is not necessary to lock down the

interface when setting a password.

Note: A 4-digit only password must be chosen otherwise the interface will show "password

not valid for this device".

Continued on the next page

REV. 7/30/2020 INSTAXDSPX-GL44 7

Outputs

MOBILE APP (CONT.)

Output Channels
· Location - Location of speaker.
· Group - Used to join channels together for simple equalization. Example, left front woofer/midrange and left front tweeter will be considered simply left front. The letter M indicates the speaker assigned as the master speaker.

· Invert - Will invert the phase of the speaker. · Mute - Will mute desired channel(s) for tuning individual channels.
Continued on the next page

8

Crossover Adjust

MOBILE APP (CONT.)

· If installing a subwoofer, the front and rear outputs will default to a 100Hz high pass filter to keep the low frequency signals out. If a subwoofer is not being installed, change the front and rear crossover points down to 20Hz for a full range signal, or to the lowest frequency the speakers will play down to.
· Selecting High Pass and Low Pass will provide one crossover frequency adjustment. Selecting Band Pass will provide two crossover frequency adjustments, one for low pass, and one for high pass.

Continued on the next page
REV. 7/30/2020 INSTAXDSPX-GL44 9

Equalizer Adjust

MOBILE APP (CONT.)

· All channels can be adjusted independently within this tab with 31 bands of available equalization. It is best to tune this by using an RTA (Real Time Analyzer).
· The Gain slider on the far left is for the channel selected.
10

Continued on the next page

Delay Adjust

MOBILE APP (CONT.)

· Allows a delay of each channel. If a delay is desired, first measure the distance (in inches) from each speaker to the listening position, then enter those values to the corresponding speaker. Add (in inches) to the desired speaker to delay it.

Continued on the next page
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Inputs/Levels

MOBILE APP (CONT.)

· Chime Volume - Allows the chime volume to be adjusted up or down.
· Clipping Level - Use this feature to protect sensitive speakers like tweeters from being driven past their capabilities. If the output signal of the interface clips the audio will be reduced by 20dB. Turning down the stereo will allow the audio to come back at a normal level. The sensitivity of this feature can be adjusted to the listening preference of the user.

· Amp Turn On

· Signal Sense - Will turn the amp(s) on when an audio signal is detected, and keep on for 10 seconds after the last signal. This ensures the amp(s) won't shut off between tracks.

· Always On - Will keep the amp(s) on as long as the ignition is cycled on.

· Turn on Delay - Can be used to delay audio output to avoid turn-on pops.

· Subwoofer Input - Select Front + Rear

Continued on the next page

12

Locking Down Data

MOBILE APP (CONT.)

Last and the most important. You must lock down your
configuration and cycle the key!!!

REV. 7/30/2020 INSTAXDSPX-GL44 13

SPECIFICATIONS

Input Impedance Input Channels Input Options Input Type Input Voltage (high level range) Input Voltage (low level range) Ouput Channels Output Voltage Output Impedance Equalizer Type THD Frequency Response Crossover Crossover Type Sampling S/N Ratio

1M Ohm 6 High Level or Low Level Differential balanced 0 - 28-volts (peak-to-peak)
0 - 4.9-volts (peak-to-peak)
10 Up to 5-volts RMS 50 Ohms 31 Band Graphic EQ, +/- 10dB <0.03% 20Hz - 20kHz 3-Way LPF, BPF, HPF THP per channel Linkwitz-Riley 24db slope 48kHz 105dB @ 5-volts RMS

Operating Voltage Standby Current Draw Operation Current Draw Adjustments/Controls Remote Output

10-16 volts DC 7mA 150mA Application via Bluetooth 12 volts DC (signal sense or with ignition

14

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AxxessInterfaces.com

© COPYRIGHT 2020 METRA ELECTRONICS CORPORATION

AXDSPX-GL44
INSTALLATION INSTRUCTIONS
Having difficulties? We're here to help. Contact our Tech Support line at:
386-257-1187
Or via email at: techsupport@metra-autosound.com Tech Support Hours (Eastern Standard Time) Monday - Friday: 9:00 AM - 7:00 PM Saturday: 10:00 AM - 7:00 PM Sunday: 10:00 AM - 4:00 PM
® KNOWLEDGE IS POWER
Enhance your installation and fabrication skills by enrolling in the most recognized and respected mobile electronics school in our industry. Log onto www.installerinstitute.com or call 800-354-6782 for more information and take steps toward a better tomorrow.
Metra recommends MECP certified technicians
REV. 7/30/20 INSTAXDSPX-GL44



References

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