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New info JBL system lower ohms to increase volume

Discussion in '3rd Gen. Tacomas (2016+)' started by Ysrracer151, Aug 20, 2019.

  1. Aug 20, 2019 at 9:57 AM
    #1
    Ysrracer151

    Ysrracer151 [OP] Okopipi

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    Is there anyone on here that considers themselves to be a jbl system expert or knows more then most about the jbl system. I think I fixed it.. I dont exactly know why it fixed it but I know that it really did fix it. My 2019 jbl system was just as horrible as everyone elses and now my tweeters are super loud and miss are perfect and bass is on point. The louder I crank it the louder it gets. Before .. adjusting the crossovers seemed pointless as with bass all the way down or up was so minimally distinguishable it was pointless to adjust. Now the crossovers are so noticable it's really like how it should of been from the factory. The volume does *not decrease over time. Before the radio would start turning down the volume after a period of extended high volume. It does not turn down now. With the windows down I can hear the radio clearly and caught myself turning the radio down myself because it was too loud. So I need someone with more know how then me to tell me what they think?
     
    tcBob likes this.
  2. Aug 20, 2019 at 10:00 AM
    #2
    Tac0Man

    Tac0Man Well-Known Member

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    ok so like I am going to need to know exactly what you did. Because I am having the same issues with the "turn down" issue and it is killing me. I cant stand it..... I thought I was going crazy because after a while it was basically like the radio might as well be off.
     
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  3. Aug 20, 2019 at 11:21 AM
    #3
    Riotfunk

    Riotfunk Well-Known Member

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    What you do to it lol
     
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  4. Aug 20, 2019 at 11:25 AM
    #4
    ktbell444

    ktbell444 Problem Solver

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    Did you turn off the Adaptive volume or something? That's the only thing I can come up with...
     
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  5. Aug 20, 2019 at 11:29 AM
    #5
    MaTaco_4x4

    MaTaco_4x4 Well-Known Member

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    I removed a screw from the part next to the intake manifold. I get 32 MPG and just clocked 9.7s quarter mile at the track. Everyone should remove that screw.

    (Facetious Comment)
     
  6. Aug 20, 2019 at 11:30 AM
    #6
    Nightscape

    Nightscape Well-Known Member

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    I'm so confused...
     
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  7. Aug 20, 2019 at 11:30 AM
    #7
    Ysrracer151

    Ysrracer151 [OP] Okopipi

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    I bought a new sub. A cerwin vega it is switchable 8ohm to 2ohm I have it set on 2 ohm. The sub is dual voice coil but cerwin vega pre wired it so it only has one set of terminals for the input to the sub. I wired it first with just + and - from 1 of the 2 sets of wires coming from the amp and it sounded good but not great. It sounded the same as the stock sub. Then I tried just the + from one set of wires from the amp and just - from the other wire like I was bridging the amp and same result. Sounded same as stock. So I thought it was weird that when I bridged or thought I bridged the stock amp and when I only used 1 wire it sounded the exact same. So I tried multiple combinations and I'll have to double check after work but I just started randomly trying different wires out of the 4 wires and 1 combination it started working ! It sounded so good. It was like it woke up. And everything started working. Crossfader. Tweeters. Volume, everything! So I dont know if someone at toyota or jbl or even I messed something up but it is really weird how the amp turns itself down after a period of time using it like it's working too hard and is trying to protect itself. Maybe it is wired wrong from the factory. I cant see why jbl would want their name on that horrible sound system but now. It is soooooo good! Its unbelieveable
     
    MaHoTex likes this.
  8. Aug 20, 2019 at 11:33 AM
    #8
    Ysrracer151

    Ysrracer151 [OP] Okopipi

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    I dont want to guess witch wires I hooked up and tell you the wrong answer. I will take pictures and post exactly how it is set up working in a couple hours.
     
  9. Aug 20, 2019 at 11:34 AM
    #9
    Ysrracer151

    Ysrracer151 [OP] Okopipi

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    I was so excited it started making noise that I didnt care to even look I put it back together and went for a test drive to test it out.
     
  10. Aug 20, 2019 at 11:36 AM
    #10
    I.eat.tacos

    I.eat.tacos Well-Known Member

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    What did you do specifically?
     
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  11. Aug 20, 2019 at 11:36 AM
    #11
    Tocamo

    Tocamo Not to be confused with Camel Toe

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    Lil' off topic, but I was driving a new Elantra the other day, and when I put it in reverse, the volume dropped considerably. Fine I thought, safety first, but as soon as I took it out of reverse, BAM, the music scared the shit out of me, as it was much louder again without warning.

    WTF do those engineers think of all day!!!!
     
  12. Aug 20, 2019 at 11:44 AM
    #12
    MaTaco_4x4

    MaTaco_4x4 Well-Known Member

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    Sex.

    (Engineer)
     
  13. Aug 20, 2019 at 12:21 PM
    #13
    cwdog

    cwdog Well-Known Member

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    Gotta' know more about this.
     
  14. Aug 20, 2019 at 12:37 PM
    #14
    5nahalf

    5nahalf I build dumb things

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    My android headunit does this, my wife didnt know and she cranked the volume up while I was reversing :) had a pretty good surprise for her when I put it in drive.
     
  15. Aug 20, 2019 at 6:04 PM
    #15
    Ysrracer151

    Ysrracer151 [OP] Okopipi

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    From amp red to positive and green to negative

    20190820_180232.jpg
     
  16. Aug 20, 2019 at 6:13 PM
    #16
    Ysrracer151

    Ysrracer151 [OP] Okopipi

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    Installed

    15663499640584934596810755616844.jpg
     
  17. Aug 20, 2019 at 6:19 PM
    #17
    12TRDTacoma

    12TRDTacoma Ocean TRD

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    My man, you are going to fry either that subwoofers voice coil or the JBL amplifier itself. That amp is designed to see and handle an 8 ohm load and you are running 2 ohms on it. It might sound good right now but you are on a beating time bomb (literally) if you continue running it that way. The OE amplifier is not a Monoblock which can run variable ohm load configurations on it like aftermarket Class D Monoblocks can.

    If you blow that amp, you are going to blow your ability to control volume control of the headunit both at the steering wheel and the headunit. You will be stuck with one volume if it doesn't kill the amp entirely and then you are going to be stuck in a situation where you have to replace the headunit, the amp, and all of your door speakers to aftermarket stuff as well as add in steering wheel control and JBL wiring turn on modules to power up your headunit and regain control of your steering wheel controls.

    It's gonna get ugly, that much I promise you. The OE JBL sound system sucks entirely, so my advice if you want to run a more powerful subwoofer and want better sound is to gut it all, but in the meantime while you save up (if you need to) to make the swap, my advice is either run stock stuff or run 8 ohm speakers and subs.
     
    Last edited: Aug 20, 2019
  18. Aug 20, 2019 at 6:28 PM
    #18
    Murphinator

    Murphinator Well-Known Member

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    Is the 3rd gen jbl system 8 ohm? My 2nd gen system is 2 ohms. Seems strange.
     
  19. Aug 20, 2019 at 6:36 PM
    #19
    12TRDTacoma

    12TRDTacoma Ocean TRD

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    The system has not changed throughout the years. Where did you get 2 ohms from your system Anthony? Stamp markings or did you measure it with a ohmmeter or..?
     
  20. Aug 20, 2019 at 6:41 PM
    #20
    CoastieRon

    CoastieRon Hammocking Fool

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