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  1. #16
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    Re: Adjusting my amp to allow my sub to hit lows better

    Quote Originally Posted by Jakeeck View Post
    ok i was right.. my sub isnt hitting the low lows in songs.. my subsonic is set 10 below my box tuning which is 33.. so subsonic is at 23-25.. my lowpass at 80... what else could be wrong.. i doubt its my box..

    sub is a 15" IA LI powered by a hifonics 1208d

    it also doesnt hit lows when i turn the gain down
    do you have an Equalizer curve option on your head unit ?







  2. #17
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    Re: Adjusting my amp to allow my sub to hit lows better

    Quote Originally Posted by IDSkoT View Post
    Check the EQ on your head unit, and measure the box and the port... it could be the box was designed wrong. Other than that, I'm not really sure what "not hitting lows" mean. Does it lose output? Or does it just not get louder as it gets lower?
    ya basically once i get to the lows i get almost no output.. when it gets to the lows its as if that part of the song doesnt even have bass

    on my hu i have the settings: mid/bass/treb/bal-fade/loudness/non-fader/svc

    i dont think any of those affect how my sub hits the lows



    Setup:
    Car: 1999 Pontiac Grand Prix GTP
    Head Unit: Eclipse CD3100
    Front/Rear Stage: Bose Factory Speakers/Amp
    Subs: 1 15" Incriminator Audio Lethal Injection
    Sub Amp: Hifonics 1208d

    List of future upgrades(in order):
    1. Set of comps(get rid of bose) and deaden doors/trunk


    Refs: mlstrass

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    Re: Adjusting my amp to allow my sub to hit lows better

    sure you dont got it on highpass? lol jk

    but how low are you talking about actually?

    and can that sub handle that power without the sub sonic filter? only use them when needed



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  4. #19
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    Re: Adjusting my amp to allow my sub to hit lows better

    Quote Originally Posted by Jakeeck View Post
    ya basically once i get to the lows i get almost no output.. when it gets to the lows its as if that part of the song doesnt even have bass

    on my hu i have the settings: mid/bass/treb/bal-fade/loudness/non-fader/svc

    i dont think any of those affect how my sub hits the lows
    What unit is it?



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  5. #20
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    Re: Adjusting my amp to allow my sub to hit lows better

    Quote Originally Posted by Etac View Post
    car.. sub location/direction? also with that sub sonic filter set at 25ish, you're losing about 2 db's at your tuning freqency so you know.. (Assuming its a 12 d/b slope) and more even below it...

    also how low are you talking about.. you should be hitting 32hz alright.. but a ported box has a very steep drop... so if youre talking really low... then that might be why

    edit: what kind of headunit?
    i tried white girl/soul survivor/put on... they are all 31-32 hz at the lowest and its not hitting them..

    and also its somewhat hard to tell where my subsonic is at just looking at the dial thats why i said 23-25.. id have to really pay attention but when i was out there adjusting it i was just trying to get the lows to work and they just never did.



    Setup:
    Car: 1999 Pontiac Grand Prix GTP
    Head Unit: Eclipse CD3100
    Front/Rear Stage: Bose Factory Speakers/Amp
    Subs: 1 15" Incriminator Audio Lethal Injection
    Sub Amp: Hifonics 1208d

    List of future upgrades(in order):
    1. Set of comps(get rid of bose) and deaden doors/trunk


    Refs: mlstrass

  6. #21
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    Re: Adjusting my amp to allow my sub to hit lows better

    Quote Originally Posted by Jakeeck View Post
    ya basically once i get to the lows i get almost no output.. when it gets to the lows its as if that part of the song doesnt even have bass

    on my hu i have the settings: mid/bass/treb/bal-fade/loudness/non-fader/svc

    i dont think any of those affect how my sub hits the lows
    your lows option on the HU will dramatically increase the 45 htz range when turning it up. What are your "lows" at now. I'm gonna guess around 0 just for the hell of it. You need to turn them up higher, like maybe to 4 or 5.




  7. #22
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    Re: Adjusting my amp to allow my sub to hit lows better

    Quote Originally Posted by IDSkoT View Post
    What unit is it?
    eclipse cd3100



    Setup:
    Car: 1999 Pontiac Grand Prix GTP
    Head Unit: Eclipse CD3100
    Front/Rear Stage: Bose Factory Speakers/Amp
    Subs: 1 15" Incriminator Audio Lethal Injection
    Sub Amp: Hifonics 1208d

    List of future upgrades(in order):
    1. Set of comps(get rid of bose) and deaden doors/trunk


    Refs: mlstrass

  8. #23
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    Re: Adjusting my amp to allow my sub to hit lows better

    Quote Originally Posted by endofdays89 View Post
    your lows option on the HU will dramatically increase the 45 htz range when turning it up. What are your "lows" at now. I'm gonna guess around 0 just for the hell of it. You need to turn them up higher, like maybe to 4 or 5.
    is one of those my lows option? i dont think i have one for my HU



    Setup:
    Car: 1999 Pontiac Grand Prix GTP
    Head Unit: Eclipse CD3100
    Front/Rear Stage: Bose Factory Speakers/Amp
    Subs: 1 15" Incriminator Audio Lethal Injection
    Sub Amp: Hifonics 1208d

    List of future upgrades(in order):
    1. Set of comps(get rid of bose) and deaden doors/trunk


    Refs: mlstrass

  9. #24
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    Re: Adjusting my amp to allow my sub to hit lows better

    Quote Originally Posted by Jakeeck View Post
    is one of those my lows option? i dont think i have one for my HU
    where it says "low or L" on the head unit. Tell me what that is at sir




  10. #25
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    Re: Adjusting my amp to allow my sub to hit lows better

    Quote Originally Posted by endofdays89 View Post
    where it says "low or L" on the head unit. Tell me what that is at sir
    i dont have that anywhere lol.. i listed what i all had on my HU a few posts up



    Setup:
    Car: 1999 Pontiac Grand Prix GTP
    Head Unit: Eclipse CD3100
    Front/Rear Stage: Bose Factory Speakers/Amp
    Subs: 1 15" Incriminator Audio Lethal Injection
    Sub Amp: Hifonics 1208d

    List of future upgrades(in order):
    1. Set of comps(get rid of bose) and deaden doors/trunk


    Refs: mlstrass

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    Re: Adjusting my amp to allow my sub to hit lows better

    if you dont know exactly what your sub sonic filter is at turn it off, or as low as psosible before your subs bottom out...

    you can set it right using a dimm,run a test tone of the freqency you want it set at.. multiply the voltage you get with it set flat by (.707).. and that answer is what you should get when adjusting the subsonic filter

    and try measuring the box you got and putting the measurements at winisd or a simiar program to make it sure its tuned right...



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    Re: Adjusting my amp to allow my sub to hit lows better

    Quote Originally Posted by Jakeeck View Post
    i dont have that anywhere lol.. i listed what i all had on my HU a few posts up
    what the hell? i thought all head units had "lows" control?




  13. #28
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    Re: Adjusting my amp to allow my sub to hit lows better

    Quote Originally Posted by Etac View Post
    if you dont know exactly what your sub sonic filter is at turn it off, or as low as psosible before your subs bottom out...

    you can set it right using a dimm,run a test tone of the freqency you want it set at.. multiply the voltage you get with it set flat by (.707).. and that answer is what you should get when adjusting the subsonic filter

    and try measuring the box you got and putting the measurements at winisd or a simiar program to make it sure its tuned right...
    is it possible my sub is already bottomed out? it hits real heavy on other bass just not the lows



    Setup:
    Car: 1999 Pontiac Grand Prix GTP
    Head Unit: Eclipse CD3100
    Front/Rear Stage: Bose Factory Speakers/Amp
    Subs: 1 15" Incriminator Audio Lethal Injection
    Sub Amp: Hifonics 1208d

    List of future upgrades(in order):
    1. Set of comps(get rid of bose) and deaden doors/trunk


    Refs: mlstrass

  14. #29
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    Re: Adjusting my amp to allow my sub to hit lows better

    Film the sub on low notes.



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    Re: Adjusting my amp to allow my sub to hit lows better

    Quote Originally Posted by 99oldsintrigue View Post
    Film the sub on low notes.
    yeah, put in some white girl or three 6 mafia and sit in your car and let us see how much the rear view mirrors move. It usually is the best indicator that the low lows are hitting well or not. Cuz it should vibrate quite a bit.




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