AXXESS AXDSPX-GL44 GM DSP Interface with Pre-Wired Harness Instruction Manual

: June 6, 2024
: AXXESS

AXXESS AXDSPX-GL44 GM DSP Interface with Pre-Wired Harness Instruction Manual

INTERFACEFEATURES

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 band pass 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

INTERFACECOMPONENTS

AXDSPX-GL44 interface
AXDSPX-GL44 interface harness
AXDSPX-GL44 vehicle T-harness
Bass knob

TOOLS & INSTALLATION ACCESSORIESREQUIRED

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

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 non amplified.

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.

† 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

Remove the factory radio †, then unplug all connectors.
Install the AX-DSPX-GL44vehicleT-harness to the vehicle and make all necessary connections, but leave the amp turn-on wire disconnected.
Plug the AX-DSPX-GL44vehicleT-harness to the AX-DSPX GL44interface.
Plug the AX-DSPX-GL44interfaceharness to the AX-DSPX GL44interface.
Download and install the AXDSP-X app from the Google Play Store or Apple App Store.
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.
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.
Connect the amp turn-on wire.
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

ADDING A SUB TO A FACTORY SYSTEM

Adding a Sub to a Factory System

ADDING A FULL-RANGE AMP & SUB TO A FACTORY SYSTEM

Adding Full Range AMP and SUB

MOBILE APP

Setup Instructions

General information tab for installing the interface.

Bluetooth Connection

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.
Disconnect – Disconnects the interface from the app.

Note: The ignition must be cycled on during this process.

Configuration

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”.

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.

Crossover Adjust

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.

Equalizer Adjust

Equalizer Adjustment

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.

Delay Adjust

Delay Adjustment

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.

Inputs/Level

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

Locking Down Data

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

SPECIFICATIONS

Input Impedance
1M Ohm
Input Channels
6
Input Options
High Level or Low Level
Input Type
Differential balanced
Input Voltage
0 – 28-volts (peak-to-peak) (high level range)
Input Voltage
0 – 4.9-volts (peak-to-peak) (low level range)
Output Channels
10
Output Voltage
Up to 5-volts RMS
Output Impedance
50 Ohms
Equalizer Type
31 Band Graphic EQ, +/- 10dB THD <0.03%
Frequency Response
20Hz – 20kHz
Crossover
3-Way LPF, BPF, HPF THP per channel
Crossover Type
Linkwitz-Riley 24db slope
Sampling
48kHz
S/N Ratio
105dB @ 5-volts RMS
Operating Voltage
10-16 volts DC
Standby Current Draw
7mA
Operation Current Draw
150mA
Adjustments/Controls
Application via Bluetooth
Remote Output
12 volts DC (signal sense or with ignition

CONTACT US

Having difficulties? We’re here to help

Phone Icon 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.