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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 30, 2019 at 8:41 AM
    #161
    Ysrracer151

    Ysrracer151 [OP] Okopipi

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    Jl audio sensitivity is 82db @ 1watt @1 meter and boss audio is 91db @ 1 watt @ 1 meter so how does doubling power have anything to do with how subs need "doubled *linear* power when exponentially different! That's like trying to say your muscles double in size if you work out double. These are all variable differences and having a opinion isnt worth even mentioning. 9db difference with 1 watt equal power. Higher volumes are not rated because the differences are just to great to try and record and document. Seriously, kickers res freq is 40hz and cerwin vega was 34hz and produced in my original set up better low end excursion "more bass" and the kicker at 40hz obviously played music in that range better. Both with about 86 sensitivity witch is related to db or *volume that also has to do with resistance! Specific sub design for specific application
     
    Last edited: Aug 30, 2019
  2. Aug 30, 2019 at 8:50 AM
    #162
    Ysrracer151

    Ysrracer151 [OP] Okopipi

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    My favorite sub was the the cerwin vega resonant frequency of 34 htz and simple 2 or 1.9 ohm and 86db 1w1m seems to have better sound while improving the *volume or db of the rest of the speakers
     
  3. Aug 30, 2019 at 9:03 AM
    #163
    Ysrracer151

    Ysrracer151 [OP] Okopipi

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    Trying not to plagiarize but

    Screenshot_20190830-090233_Chrome.jpg
     
  4. Aug 30, 2019 at 9:10 AM
    #164
    Ysrracer151

    Ysrracer151 [OP] Okopipi

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    Infinity flex 8d looks okay to with the freq at 40htz and sensitivity at 84db but the ohm looks the lowest I've seen yet. At 1.89 and 3.87 in the 4 ohm version that would be a better candidate wired down to 2 ohm. But freq. At 40 playes better rock music. Or highs. All of this homework is tiring.

    Screenshot_20190830-090811_Drive.jpg
     
  5. Aug 30, 2019 at 9:19 AM
    #165
    Ysrracer151

    Ysrracer151 [OP] Okopipi

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    Cdt audio I have not tried yet but it's not rocket science.

    Screenshot_20190830-091839_Chrome.jpg
     
  6. Aug 30, 2019 at 10:16 AM
    #166
    Ysrracer151

    Ysrracer151 [OP] Okopipi

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    Found a calculator in the app store to help people figure out how specific resistance translates to power. 43.4 to 55.5 is a dramatic increase in output!!!

    Screenshot_20190830-101453_OhmsWatts Law Calculator.jpg
    Screenshot_20190830-101440_OhmsWatts Law Calculator.jpg
     
  7. Aug 30, 2019 at 10:57 AM
    #167
    2016Tacoman

    2016Tacoman Well-Known Member

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    Your amp only provides so much power regardless of speaker ohms and can be damaged by going too low.
     
  8. Aug 30, 2019 at 11:00 AM
    #168
    Ysrracer151

    Ysrracer151 [OP] Okopipi

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    Very true statement. But we are talking about the same 2 ohm speakers, just variables in quality control of the actual 2 ohm measurment.jbl stock is 2.3 and aftermarket is variable 1.8 to 2.3 depending on brand and speaker. This affects output. This is not a topic about wiring down to 1 ohm. Simple speaker decisions
     
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  9. Aug 30, 2019 at 1:32 PM
    #169
    Riotfunk

    Riotfunk Well-Known Member

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    Im gonna order a low pro polk sub. Try that next week or so. Post that up when it comes in and let you know.
     
  10. Aug 30, 2019 at 3:00 PM
    #170
    Ysrracer151

    Ysrracer151 [OP] Okopipi

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    What is the Polk sub what are its specifications?
     
  11. Aug 30, 2019 at 4:01 PM
    #171
    Riotfunk

    Riotfunk Well-Known Member

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    Similar to the CV spec wise, but shallower mounting.

    A5AEFCA6-EBD4-4270-A674-FFBE06424E96.jpg
     
  12. Aug 30, 2019 at 4:13 PM
    #172
    0xDEADBEEF

    0xDEADBEEF lolcowboy

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  13. Aug 30, 2019 at 4:37 PM
    #173
    Ysrracer151

    Ysrracer151 [OP] Okopipi

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    Efficency was the main objective. But efficency is not top priority for sub manufacturers. If you want efficent you could just throw 100db efficent loudspeaker in there. Frequency + efficency
     
  14. Aug 30, 2019 at 4:41 PM
    #174
    Ysrracer151

    Ysrracer151 [OP] Okopipi

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    We are working backwards reverse engineering if that makes sence. Usually you pick a sub then pick a amp. Our amp is fixed so we have to choose the most efficent sub. But when doing so thr frequency goes up! You loose bottom end bass. This is where ohms comes in to save the day and a speaker with less than 2 but greater then 1.5 actual measurement witch is not always listed helps the decision to keep frequency low and efficency as high as possible
     
  15. Aug 30, 2019 at 4:49 PM
    #175
    Ysrracer151

    Ysrracer151 [OP] Okopipi

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    I tried not to albert einstein with math basically making it easier for someone to understand for someone not familiar like myself with audio as most people. So albert einstein away and explain the difference in speaker resistance. And why 2 of the same vehicles coming out of the same plant have vastly different sound output
     
  16. Aug 30, 2019 at 4:53 PM
    #176
    Ysrracer151

    Ysrracer151 [OP] Okopipi

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    Pretty sure this whole part was about sensitivity
     
  17. Aug 30, 2019 at 4:59 PM
    #177
    Ysrracer151

    Ysrracer151 [OP] Okopipi

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    Let's just make it so confusing nobody know what's happening

    Screenshot_20190830-165906_Chrome.jpg
     
  18. Aug 30, 2019 at 5:32 PM
    #178
    Viper1092

    Viper1092 Well-Known Member

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    Ugh just tell me what sub to put in when you guys are finished lol
     
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  19. Aug 30, 2019 at 5:37 PM
    #179
    Ysrracer151

    Ysrracer151 [OP] Okopipi

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    Viper what music do you listen to?
     
  20. Aug 30, 2019 at 5:41 PM
    #180
    Ysrracer151

    Ysrracer151 [OP] Okopipi

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    The pioneer comp c* is a good sub because it is more sensitive and not power hungry. Dual 4 ohm wired down to 2 ohm is the way my truck is right now. I have 2 scar audio subs in the mail I'm going to test if it's better to wire two 2 ohm subs with all 4 wires or two 4 ohm wires paralleled down to 2 ohms using only 2 wires the green and red coming from the amp. You want to avoid subs that have high watt capacity that means their rms is high and out little amp cant let the speaker have enough power
     

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