AXDSPX-GM33 - DVD player Axxess - Free user manual and instructions

Product Type	GM DSP Interface with Pre-Wired Harness
Brand	AXESS
Model	AXDSPX-GM33
Compatible Vehicles	Select GM models 2021-up (non-amplified)
Input Channels	6
Output Channels	10
Equalizer Type	31-Band Graphic EQ or 5-Band Parametric EQ
Equalizer Range	+/- 10dB
Frequency Response	20Hz - 20kHz
Sampling Rate	48kHz
S/N Ratio	105dB @ 5V RMS
THD	< 0.03%
Crossover Type	Linkwitz-Riley 24dB/octave slope
Crossover Modes per Channel	HPF, LPF, BPF, THP (3-way selectable)
Channel Delay	Up to 10ms independently per channel
Input Options	High-level (speaker) or low-level (RCA)
Input Voltage Range (High-level)	0 - 28V peak-to-peak
Input Voltage Range (Low-level)	0 - 4.9V peak-to-peak
Output Voltage	Up to 5V RMS
Operating Voltage	10 - 16V DC
Standby Current Draw	7mA
Operation Current Draw	150mA
Remote Output	12V DC, 1A (signal sense or ignition)
Communication	Bluetooth (via AXDSP-XL app)
App Compatibility	Android and iOS (iOS 12.1 or higher)
USB Update	Micro-B USB updatable
Firmware Protection	Password protect feature in app
Included Components	Interface, output harness, vehicle T-harness, resistor pad, bass knob
Preserves Factory Features	Parking sensor chimes, OnStar® voice prompts, turn signal clicks, door chimes
Installation Type	Behind-the-radio, pre-wired harness

Frequently Asked Questions - AXDSPX-GM33 Axxess

What is the AXDSPX-GM33?

The AXESS AXDSPX-GM33 is a Digital Signal Processor (DSP) interface designed for select GM vehicles from 2021-up without factory amplifiers. It allows integration of aftermarket amplifiers and subwoofers while retaining factory features like chimes and OnStar.

Which vehicles are compatible with the AXDSPX-GM33?

It is compatible with non-amplified GM models from 2021-up. For the latest vehicle list, visit axxessinterfaces.com.

How do I connect the interface to my vehicle?

First, remove the factory radio and unplug all connectors. Plug the vehicle T-harness into the vehicle, then connect it to the interface. Then plug the interface harness into the interface. Make all necessary connections but leave the amp turn-on wire disconnected until after configuration.

What app do I need to configure the AXDSPX-GM33?

Download the AXDSP-XL app from the Google Play Store or Apple App Store (iOS 12.1 or higher). Use Bluetooth to connect your mobile device to the interface.

How do I set up the DSP for my vehicle?

Open the app, go to the Configuration tab, select the Vehicle Type icon, choose your vehicle make and model, and select 'With OE Amp' if applicable. Press Apply, then Lock Down to save the configuration. Cycle the ignition off and on.

What is the Lock Down feature?

The Lock Down button saves the configuration to the interface. It is essential to lock down after any changes and then cycle the ignition off and on to ensure settings are applied.

Can I add a subwoofer with this interface?

Yes, the AXDSPX-GM33 supports adding a subwoofer to a factory system. Use the bass knob included for level control. Refer to the manual for specific wiring diagrams.

Does the interface retain factory chimes and OnStar?

Yes, when the LD-DSP-RPAD2 resistor pad is connected, it retains turn signal clicks, door chimes, parking sensor chimes, and OnStar voice prompts. The chime level is adjustable.

What are the output specifications of the AXDSPX-GM33?

It has 10 output channels with up to 5V RMS each, a 31-band graphic EQ or 5-band parametric EQ, independent filters (HPF, LPF, BPF) per channel, and delay up to 10ms per channel. THD is less than 0.03%.

How do I update the firmware of the interface?

The interface is Micro-B USB updatable. Connect it to a computer using a USB cable and use the AXDSP-XL app or software from Axxessinterfaces.com to update.

USER MANUAL AXDSPX-GM33 Axxess

Collection of electronic components including a black rectangular device and various colored connectors (no visible text or symbols)

APPLICATIONS

Visit axxessinterfaces.com for current application list

GM DSP Interface With Pre-Wired Harness 2021-Up

INTERFACE FEATURES

• Designed for non-amplified models
  • Includes a DSP (Digital Signal Processor)
  • 31 Band graphic EQ or 5 Band Parametric 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
• 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 5-6

Specifications....7

INTERFACE COMPONENTS

• AXDSPX-GM33 interface
• AXDSPX-GM33 output harness (LD-AX-DSP-OUT2)
• AXDSPX-GM33 vehicle T-harness (LD-DSP-GM33)
• Resistor Pad (LD-DSP-RPAD2)
  • Bass knob (LD-BASSKNOB)

TOOLS & INSTALLATION ACCESSORIES REQUIRED

• Crimping tool and connectors, or solder gun, solder, and heat shrink • Tape • Wire cutter
• Zip ties • Multimeter

www.MetraOnline.com

MetraOnline.com may be used to assist with dash assembly instructions. Simply enter your Year, Make, Model vehicle into the vehicle fit guide and look for the Dash Kit Installation Instructions.

INSTALLATION OPTIONS INSTALL AT

Adding a sub to a factory system:

This feature offers the ability to add a subwoofer to a factory system. (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. (refer to page 4)

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.

N

1. Remove the factory radio , then unplug all connectors.
2. Install the AXDSPX-GM33 vehicle T-harness to the vehicle and make all necessary connections, but leave the amp turn-on wire disconnected.
3. Plug the AXDSPX-GM33 vehicle T-harness to the AXDSPX-GM33 interface.
4. Plug the AXDSPX-GM33 interface harness to the AXDSPX-GM33 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 5 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 6 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

ADDING A SUB TO A FACTORY SYSTEM

REV. 2/12/24 INSTAXDSPX-GM33

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

graph TD
    A["Factory Radio"] --> B["Bass Knob"]
    A --> C["Black - Ground Orange - Control"]
    A --> D["Any remaining wires tape off and disregard"]
    A --> E["Vehicle T-Harness"]
    A --> F["Interface"]
    A --> G["Unplug connector"]
    A --> H["Interface Harness"]
    A --> I["Blue/White - Amp Turn-On Wire"]
    A --> J["Red Arrow to Interface"]
    K["RCA Jacks (sold separately)"] --> L["An SPDT relay, Metra part number E-123, is required if the amp turn-on current of all amps exceeds 1-amp."]
    L --> M["Cut the male connector off and connect speaker wires to amp"]
    L --> N["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 -"]
    L --> O["Red Arrow to Interface Harness"]
    P["Plug in the LD-DSP-RPAD2"] --> Q["NOTE: Plug the LD-DSP-RPAD2 (RETENTION OF THE FOLLOWING FEATURES ARE KEPT WITH THE LD-DSP-RPAD2 CONNECTED. EX: TURN SIGNAL CLICKS AND DOOR CHIMES)"]
    P --> R["Blue/White - Amp Turn-On Wire"]

QUICK SETUP STEPS THROUGH AXDSP-XL APP

Google Play Store

Apple App Store

iOS 12.1 or higher

1. Download and install the AXDSP-XL app from the Google Play Store or Apple App Store.
2. Turn Vehicle Ignition on. Make sure the Remote Turn on lead is disconnected.
3. Open the app: Select Bluetooth Connections page.

- Select Scan, all available AXDSP devices within range will be displayed. Select your AXDSP and hit connect. (Figure A)

1. Select the Configuration page.

2. Select Vehicle Type Icon

3. Select the Vehicle Make: ____ (Example: GMC)
4. Select the Vehicle's model: ____ (Example: Sierra 1500)
5. Select With OE Amp

6. Hit Apply (Figure B)

7. Make sure radio volume is all the way down.

8. Connect the amp turn-on wire from the AXDSPX-GM33 T-harness to the aftermarket amplifiers.

(Figure A)

(Figure B)

QUICK SETUP STEPS THROUGH AXDSP-XL APP (CONT.)

1. From the Configuration page click the Identify button to confirm that the AXDSPX-GM33 is connected properly. If so, a chime will be heard from the front left speaker.
2. Press the Lock Down button to save the configuration. (Do not turn ignition off until this process is completed) (Figure C)
3. Select the Bluetooth Configurations page and disconnect the DSPX.
4. Turn ignition off, close all door then lock vehicle using the key fob. The vehicle will need to sit uninterrupted for 10 minutes while the vehicle goes to sleep. (Make sure Key fob is 15 feet away from the vehicle)
5. Unlock Vehicle, turn ignition on and test radio's functions.
6. Adjust the DSP settings in the app as desired. Refer to the instructions under the Setup Instructions tab, or online at Axxessinterfaces.com for an explanation of each tab in the app.

Locking Down Data

(Figure C)

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)

Ouput 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

AXDSPX-GM33

INSTALLATION INSTRUCTIONS

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