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Discussion Starter · #1 · (Edited)
I placed this post in another forum but haven't received a single comment so I want to post this issue in the Electrical forum as my issue maybe related to power and includes electrical diagrams. Situation outlined below.

2015 Pro-4X Rockford Fosgate System

  • Upgraded Radio to Atoto Pro 6
  • Used Metra 70-7552 and the RCA cables from Metra 70-553
    • Removed speaker pins for RCA's from Metra 70-553 and swapped them with the pins on 70-7552 (don't know if anyone has done this before, but it worked fine, if anyone has questions let me know and I can elaborate)
  • Wired up radio
  • Audio and radio work great, but no Subwoofer
  • Reviewed electrical diagram from Xterra Manual and I can't find what I'm doing wrong or how to correct
  • What I know:
    • RCA inputs on radio send a lower power signal that the amp needs, versus using the preamp high output from radio to speak wires; so I can either use the RCA inputs or I need a Line Out Converter, I opted for the RCA's, but my understanding is they are equal options.
    • Aftermarket Radio has Subwoofer input RCA port, but the Xterra wiring diagram, harness and amp do not show or have a subwoofer input.
    • Electrical Diagram shows speakers (FL,FR, RL, RR) going from the radio to the amp, then the amp sends out signal to speaker FR, FL, RR, RL and SUBWOOFER
      • So if the factory setup goes from radio to amp via speaker wires (fronts & rears), then amp to speakers and subwoofer, I have everything correct but no bass.
  • Attached is a diagram I made trying to illustrate my question... no need to make fun, I know it's terrible, just want to provide as much information as possible for a solution.
If you made it this far, thank you.
 

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I placed this post in another forum but haven't received a single comment so I want to post this issue in the Electrical forum as my issue maybe related to power and includes electrical diagrams. Situation outlined below.

2015 Pro-4X Rockford Fosgate System

  • Upgraded Radio to Atoto Pro 6
  • Used Metra 70-7552 and the RCA cables from Metra 70-553
    • Removed speaker pins for RCA's from Metra 70-553 and swapped them with the pins on 70-7552 (don't know if anyone has done this before, but it worked fine, if anyone has questions let me know and I can elaborate)
  • Wired up radio
  • Audio and radio work great, but no Subwoofer
  • Reviewed electrical diagram from Xterra Manual and I can't find what I'm doing wrong or how to correct
  • What I know:
    • RCA inputs on radio send a lower power signal that the amp needs, versus using the preamp high output from radio to speak wires; so I can either use the RCA inputs or I need a Line Out Converter, I opted for the RCA's, but my understanding is they are equal options.
    • Aftermarket Radio has Subwoofer input RCA port, but the Xterra wiring diagram, harness and amp do not show or have a subwoofer input.
    • Electrical Diagram shows speakers (FL,FR, RL, RR) going from the radio to the amp, then the amp sends out signal to speaker FR, FL, RR, RL and SUBWOOFER
      • So if the factory setup goes from radio to amp via speaker wires (fronts & rears), then amp to speakers and subwoofer, I have everything correct but no bass.
  • Attached is a diagram I made trying to illustrate my question... no need to make fun, I know it's terrible, just want to provide as much information as possible for a solution.
If you made it this far, thank you.
Quentin, I've installed 2 head units in my pro4x, one shitty Chinese made one (joying) and finally sucked it up and bought a nice Kenwood when the joying unit failed. In both installations I needed one of these in order to get power to the sub

Hope this helps,
Dale
 

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Discussion Starter · #3 ·
Quentin, I've installed 2 head units in my pro4x, one shitty Chinese made one (joying) and finally sucked it up and bought a nice Kenwood when the joying unit failed. In both installations I needed one of these in order to get power to the sub

Hope this helps,
Dale
Thanks Dale! I'll do some research now and probably order it. I still don't understand the issue I currently have, but if you have first hand experience with this working that is great.
 

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Discussion Starter · #4 ·
Quentin, I've installed 2 head units in my pro4x, one shitty Chinese made one (joying) and finally sucked it up and bought a nice Kenwood when the joying unit failed. In both installations I needed one of these in order to get power to the sub

Hope this helps,
Dale
Dale, quick question, what year is your Pro-4X?
 

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Dale, quick question, what year is your Pro-4X?
MY 2011

I'm certainly not a head unit/wiring expert. Was honestly surprised when I hooked everything up and it actually just worked. Make sure you do a nice job splicing wires... Off roading will break shitty connections over time. I used these little heat shrink butt connectors that had solder built into them and a heat gun... The only thing I'll use now when splicing wires.
 

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2013 Pro4X, 6MT
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  • Trigger wire included
Above is from Dale's Amazon link. I don't know what the 'trigger' signal should be (+12V?) but it seems like that is the missing piece of the puzzle. The subwoofer amp is not being turned 'on'. I could be completely wrong but I'd look at that if I didn't want to buy that box.
 
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