Axxess AXDSPL-MST1 User manual

AXDSPL-MST1
INSTALLATION INSTRUCTIONS
AxxessInterfaces.com © COPYRIGHT 2020 METRA ELECTRONICS CORPORATION REV. 3/2/20 INSTAXDSPL-MST1
Google Play Store Apple App Store
iOS 12.1 or higher
INTERFACE FEATURES
INTERFACE COMPONENTS
TOOLS & INSTALLATION ACCESSORIES REQUIRED
• Crimping tool and connectors, or solder gun,
solder, and heat shrink • Tape • Wire cutter
• Zip ties • Multimeter
TABLE OF CONTENTS
Connections ............................................................2
Installation ......................................................... 3-4
AXDSPL-BT Installation...........................................5
AXDSPL-SP Installation...........................................6
Mobile App .........................................................7-15
Specifications ....................................................... 16
GM DSP Interface With Amp Bypass Harness
2014-2018
• Includes a DSP (Digital Signal Processor)
• 15 Band graphic EQ
• 6 outputs including front, rear, and subwoofer
• Independent equalization for front, rear, and sub
• Selectable low pass, band pass, and high pass filters
• Selectable crossover slopes; 12db, 24db, 36db, 48db
• 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
• Designed for MOST® amplified models
• Includes an amp bypass harness
• Internal header port for adding interface modules
• 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
• AXDSPL-MST1 interface
• AXDSPL-MST1 interface harness
• AXDSPL-MST1 amp bypass harness
• Bass knob
• GM MOST® Interface
APPLICATIONS
Visit axxessinterfaces.com for current application list

2
4
3
2
1
5
5
TBA
Blue/White - Amp Turn-On Wire
Interface
Any remaining wires
tape off and disregard
RCA Jacks
(sold separately)
Amp Bypass Harness
BASS KNOB
Any remaining wires
tape off and disregard
White / Front Left Woofer +
White/Black / Front Left Woofer -
Gray / Front Right Woofer +
Gray/Black Front Right Woofer -
Green / Rear Left Woofer +
Green/Black / Rear Left Woofer -
Purple / Rear Right Woofer +
Purple/Black / Rear Right Woofer -
Orange / Subwoofer Left +
Orange/Black / Subwoofer Left -
Orange / Subwoofer Right +
Orange/Black / Subwoofer Right -
TBA
An SPDT relay, Metra part number
E-123, is required if the amp turn-on
current of all amps exceeds 1-amp.
Red/White/ Front Left Tweeter +
Red/Black / Front Left Tweeter -
Blue / Front Right Tweeter +
Blue/Black Front Right Tweeter -
Pink / Rear Center + *
Pink/Black / Center - *
* Models with a center channel
GM MOST®Interface
Factory Amp
CONNECTIONS

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I N S TAL L AT I ON
1. Locate the factory amp. Unplug and remove the amp.
Note: Amp location is on the following page.
2. Install the AX-DSPX-MST1 amp bypass harness to the vehicle and make all necessary
connections, but leave the amp turn-on wire disconnected.
3. Connect the AX-DSPX-MST1 amp bypass harness to the AX-DSPX-MST1 interface.
4. Connect the AX-DSPX-MST1 interface harness to the AX-DSPX-MST1 interface.
5. Download and install the AX-DSP-XL app from the Google Play Store or Apple App Store.
6. Cycle the ignition on.
7. Open the app then select the Bluetooth Connection tab. Follow the instructions to pair the
mobile device to the interface. Refer to page 8 for more information. (Figure A)
8. Scroll to the Configuration tab then select the vehicle type. Press the Lock Down ‡ button to
save the configuration. Refer to page 9 for more information. (Figure B)
9. Connect the amp turn-on wire.
(Figure A)
(Figure B)
Continued on the next page

4
Amplifier Location
Chevrolet
Camaro: Right side of trunk
Colorado: Behind glove-box
Corvette: Middle of luggage compartment floor
Cruze: Right side of trunk
Equinox: Front of center console
Impala: Right side of luggage compartment
Malibu: Right side of trunk
Silverado: Rear of passenger compartment ,
behind seat
Suburban: Rear left side quarter panel
Tahoe: Rear left side quarter panel
Traverse: Front of center console
GMC
Canyon: Behind glove-box
Sierra: Rear of passenger compartment,
behind seat
Yukon: Rear left side quarter panel
Yukon XL: Rear left side quarter panel
I N S TALL ATIO N (CONT.)
10. Click the Identify button to confirm the interface is connected properly. A chime will be heard
from the front left speaker. Test all functions of the installation for proper operation.
Note: The outputs may need to be configured within the Outputs tab.
11. Adjust the settings in the app as desired. Press the Lock Down ‡ button to save any new
configurations.
‡ Anytime the interface is locked down the key must be cycled off then back on
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.

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BLUETOOTH STREAMING INTERFACE
16-pin Header
16-pin Header
AX-DSPL-BT
AX-DSPL-SP
AX-DSPL-BT
AX-DSPL-SP
• The AXDSPL-BT Bluetooth streaming interface can be used to stream media directly to
the interface.
• While streaming media the volume on the phone will be used. As an option, the
AXBK-1 (sold separately) can be used to control the volume.
Note: The bass knob included with the AXDSPL-MST1 can be used if it will not be used
to control a subwoofer.
1. Important! Unplug the interface from the vehicle.
2. Remove (4) Phillips screws securing the interface, then remove the top cover, exposing
the circuit board within.
3. Locate the 16-pin header on the circuit board.
4. Important! Referencing how the AXDSPL-BT is laid out in the picture, carefully line up
the header pins to the interface. Gently press down to secure.
Note: Both interfaces may be damaged if installed wrong.
5. Reinstall the top cover to complete the installation.
AXBK-1 Installation:
6. Connect the Brown wire from the interface to the Orange wire from the AXBK-1.
Ground the Black wire from the AXBK-1.
Continued on the next page

6
TOSLINK DIGITAL OUTPUT
16-pin Header
16-pin Header
AX-DSPL-BT
AX-DSPL-SP
AX-DSPL-BT
AX-DSPL-SP
• The AXDSPL-SP Toslink digital output can be used for adding a digital output to the interface.
1. Important! Unplug the interface from the vehicle.
2. Remove (4) Phillips screws securing the interface, then remove the top cover, exposing
the circuit board within.
3. Locate the 16-pin header on the circuit board.
4. Important! Carefully line up the header pins to the AXDSPL-SP, with the Toslink port
facing outward. Gently press down to secure.
Note: Both interfaces may be damaged if installed wrong.
5. Reinstall the top cover provided with the AXDSPL-SP to complete the installation.

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MOBILE APP
Setup Instructions
• General information tab for installing the interface.
Continued on the next page

8
MOBILE APP (CONT.)
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.
Note: The ignition must be cycled on during this process.
• Disconnect - Disconnects the interface from the app.
Continued on the next page

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• Disconnect - Disconnects the interface from the app.
Continued on the next page
MOBILE APP (CONT.)
Configuration
• Identify - Click this button to send a test tone to the front left speaker .
• 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 ignition off 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”.

10
MOBILE APP (CONT.)
Continued on the next page
Outputs
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.

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MOBILE APP (CONT.)
Crossover Adjust
• Select the desired crossover filter per channel, low pass, band pass, or high pass
• Select the desired crossover slope per channel, 12db, 24db, 36db, or 48db
• Select the desired crossover frequency per channel, 20hz to 20khz
Note: The front and rear channels 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.
Continued on the next page

12
MOBILE APP (CONT.)
Equalizer Adjust
• All channels can be adjusted independently within this tab with 15 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.
Continued on the next page

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MOBILE APP (CONT.)
Delay Adjust
• 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

14
MOBILE APP (CONT.)
Inputs/Levels
Continued on the next page
• 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

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Locking Down Data
Last and the most important.
You must lock down your
configuration and cycle the key!!!
MOBILE APP (CONT.)

KNOWLEDGE IS POWER
Enhance your installation and fabrication skills by
enrolling in the most recognized and respected
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Log onto www.installerinstitute.com or call
800-354-6782 for more information and take steps
toward a better tomorrow.
®
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certified technicians
AxxessInterfaces.com © COPYRIGHT 2020 METRA ELECTRONICS CORPORATION REV. 3/2/20 INSTAXDSPL-MST1
INSTALLATION INSTRUCTIONS
AXDSPL-MST1
Having difficulties? We’re here to help.
Contact our Tech Support line at:
386-257-1187
Or via email at:
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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
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 6
Output Voltage Up to 5-volts RMS
Output Impedance 50 Ohms
Equalizer Type 15 Band Graphic EQ, +/- 10dB
THD <0.03%
Frequency Response 20Hz - 20kHz
Crossover Filter Low pass, band pass, high pass
Crossover Frequency Selectable 20hz to 20khz
Crossover Slope 12db/24db/36db/48db
Crossover Type Linkwitz-Riley
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