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    Subs just don't seem loud enough

    I have two sundown sa15s in a dual ported 6.5 cube 33hz box.. I just recently bought them both and a hifonics brz2400.1d and had the subs wired down to 2 ohms for 1700 watts rms. For some reason they just don't seem as loud as I anticipated. I have all 0 gauge wire. All settings on the head unit are at neutral. Gain is set around halfway between one and two if you were looking at a clock. All of the filters are at various positions not knowing exactly what to do with them. I dont have any dimming of my headlights and my truck already has a high output alternator so I have seen no voltage drop. I have lots of friends with much lesser quality subs (kicker, bazooka, American bass, etc.) and crap amps (boss, power acoustik, etc), and yet their subs seem to be hitting harder than mine. I tried tuning the amp myself with a multimeter and a 50hz test tune and I thought I had it all figured out only to turn my head unit up to 3/4 volume and barely hear bass at all. I don't understand what my problem is and it's really bumming me out that these 15s aren't beating like I thought they would. I don't want to crank the bass knob or gain up only to make the subs start clipping and ruin what I have put my money into. All of the filters on the amp are starting to confuse me also. I'm not necessarily new with car audio but I've just recently started wanting my stuff to be done right. There are not any local shops that really know what they are doing any better than I do and I always would rather do things myself. Any help or possible solutions would be greatly appreciated.







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    Re: Subs just don't seem loud enough

    turn up the gain.




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    Re: Subs just don't seem loud enough

    Quote Originally Posted by RangerDanger View Post
    turn up the gain.
    dont do this op.



    are you sure you wired your subs correctly? you may have wired in series giving youa higher ohm load than 2



    Things to look forward to:
    (2) 10" or 12" imperium audio designs subs
    set of PHD MF 6.5" comps
    Completely seal off and deaden my doors
    aquire a 2k amp
    aquire a 2 channel amp for front stage

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    Re: Subs just don't seem loud enough

    Yes. I checked the leads going into the amp with the multimeter and it reads 2 ohms.




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    Re: Subs just don't seem loud enough

    what is your low pass set to on the amp and head unit?



    Things to look forward to:
    (2) 10" or 12" imperium audio designs subs
    set of PHD MF 6.5" comps
    Completely seal off and deaden my doors
    aquire a 2k amp
    aquire a 2 channel amp for front stage

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    Re: Subs just don't seem loud enough

    Not sure the exact hz but on the amp I have it at around 11 o clock and on the headunit there is a subwoofer option that I have set at 80 hz but can be switched to 50, 63, and some higher if I'm not mistaken.




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    Re: Subs just don't seem loud enough

    turn the lpf off on your head unit and turn your sub lpf to around 80 on your amp. then reset your gains again.



    Things to look forward to:
    (2) 10" or 12" imperium audio designs subs
    set of PHD MF 6.5" comps
    Completely seal off and deaden my doors
    aquire a 2k amp
    aquire a 2 channel amp for front stage

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    Re: Subs just don't seem loud enough

    On the head unit it's not an option, you have to select one of the frequencies but you can adjust it to neutral (0) is that what you mean? I have a pioneer head unit if it makes any difference.




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    Re: Subs just don't seem loud enough

    yeah set it to the neutral option.



    Things to look forward to:
    (2) 10" or 12" imperium audio designs subs
    set of PHD MF 6.5" comps
    Completely seal off and deaden my doors
    aquire a 2k amp
    aquire a 2 channel amp for front stage

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    Re: Subs just don't seem loud enough

    okay. I don't understand how to tell my lpf on the amp is at 80 when it only has two markings 35 and 250




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    Re: Subs just don't seem loud enough

    Quote Originally Posted by grobbins81 View Post
    okay. I don't understand how to tell my lpf on the amp is at 80 when it only has two markings 35 and 250
    you just gotta guess where you think 80 would be. it doesnt have to be exact.



    Things to look forward to:
    (2) 10" or 12" imperium audio designs subs
    set of PHD MF 6.5" comps
    Completely seal off and deaden my doors
    aquire a 2k amp
    aquire a 2 channel amp for front stage

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    Re: Subs just don't seem loud enough

    I'm having the same exact problem and I have Weeks asking around to see if a find a correct answer. Falcons, what do you mean on . then rest your gains again?




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    Re: Subs just don't seem loud enough

    12 o clock position would probably be about 140hz, just make a good guess.



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    Re: Subs just don't seem loud enough

    sorry guys, i meant reset your gains



    Things to look forward to:
    (2) 10" or 12" imperium audio designs subs
    set of PHD MF 6.5" comps
    Completely seal off and deaden my doors
    aquire a 2k amp
    aquire a 2 channel amp for front stage

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    grobbins81's Avatar
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    Re: Subs just don't seem loud enough

    Okay. Could a bad ground cause a wattage drop in the system? It's just not making any sense to me that my friends l7 12s can be heard from down the road and my two 15s sound like some cheap 10s just enough bass to over ride door speakers.




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