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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

Summary of Contents for AXDSPX-GM31

Page 1: ...nt 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 Designed for non amplified models Easy behind the radio installation with pre wired harness Bass knob included for level c...

Page 2: ...sconnected 3 Plug the AX DSPX GM31 vehicle T harness to the AX DSPX GM31 interface 4 Plug the AX DSPX GM31 interface harness to the AX DSPX GM31 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 ...

Page 3: ...k Ground Orange Control Bass Knob Factory Radio Harness Interface Any remaining wires tape off and disregard Vehicle T Harness Blue White Amp Turn On Wire These outputs can be used for additional sub amps or for adding onto the system at a later date RCA Jacks sold separately ADDING A SUB TO A FACTORY SYSTEM ...

Page 4: ...en Rear Left Green Black Rear Left Purple Rear Right Purple Black Rear Right Any remaining wires tape off and disregard Vehicle T Harness Bass Knob Blue White Amp Turn On Wire Unplug connector Any remaining wires tape off and disregard Black Ground Orange Control An SPDT relay Metra part number E 123 is required if the amp turn on current of all amps exceeds 1 amp RCA Jacks sold separately Assigna...

Page 5: ...5 REV 8 4 2020 INSTAXDSPX GM31 MOBILE APP Setup Instructions General information tab for installing the interface Continued on the next page ...

Page 6: ...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 ...

Page 7: ...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 i...

Page 8: ...oin 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 ...

Page 9: ...ut 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 ...

Page 10: ... 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 Continued on the next page ...

Page 11: ...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 ...

Page 12: ...uced 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 SignalSense Willturntheamp s onwhenanaudiosignalisdetected andkeeponfor 10secondsafterthelastsignal Thisensurestheamp s won tshutoffbetweentracks Always On Will keep the amp s on as long as the ignition is cycle...

Page 13: ...13 REV 8 4 2020 INSTAXDSPX GM31 Locking Down Data Last and the most important You must lock down your configuration and cycle the key MOBILE APP CONT ...

Page 14: ...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...

Page 15: ...15 REV 8 4 2020 INSTAXDSPX GM31 ...

Page 16: ...better tomorrow Metra recommends MECP certified technicians AxxessInterfaces com COPYRIGHT 2020 METRA ELECTRONICS CORPORATION REV 8 4 20 INSTAXDSPX GM31 I N S TA L L AT I O N I N S T R U C T I O N S AXDSPX GM31 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...

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