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Stock stereo adding a subwoofer

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Melz808, Feb 4, 2025.

  1. Feb 4, 2025 at 7:53 PM
    #1
    Melz808

    Melz808 [OP] Member

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    Melchizedek
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    Hey guys I’m wondering if anyone knows if the stock stereo on a 2014 Tacoma trd sport (non jbl) can handle 2 amplifiers with the line out converter kits adding rca inputs ? I know there’s videos of people adding one amplifier with a subwoofer running the stock stereo but i was wondering if I could add 2 amplifiers to power my subwoofer and upgraded speakers?
     
  2. Feb 5, 2025 at 10:24 AM
    #2
    gstodd

    gstodd Well-Known Member

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    Easy enough to do. Two main ways you could go about it.

    The stock radio has outputs for four speakers so you could wire two LOCs, one to the front pair and one to the rear pair, using the rear pair one to send signal to the sub amp. You may need to get an aftermarket harness that has the speaker lines in it if the wires aren't in the existing harness. This will give you more voltage to each amp input to work with but obviously runs more in parts.

    Alternately you can just use one LOC on the front speaker line output and run it to the amp for the speakers. If that amp has a pass-through or sub output you could then run that to the sub amp.

    If not then you would have to use a pair of RCA y-adapters to split the signal to both amps. This is not ideal as it halves the voltage going to each amp and you have to increase the amp gains to compensate for it.
     
  3. Feb 5, 2025 at 12:06 PM
    #3
    Melz808

    Melz808 [OP] Member

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    @gstodd I see , it’s possible and easy enough to do but no point then really because none of the speakers or sub would be getting the power it should rlly have right . Sounds like I’ll be better off getting a aftermarket stereo instead of dealing with all that.
     
  4. Feb 5, 2025 at 12:22 PM
    #4
    gstodd

    gstodd Well-Known Member

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    That would be my suggestion. For the amount of work and money in parts you would still be propping up a stock system that was never designed with good sound quality in mind. The money is better spent on getting a better source in replacing the head unit. And with Car Play/Android Auto you'll be upgrading to streaming music and navigation.
     

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