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    My sub hits a fraction of a second late..

    Anyone else have this problem before? I have a d2 12" lethal injection in 2.5cuft after displacement @33Hz. Running an ednine.1 to it at 1 ohm. My only guess is that the box is so big it takes a little for the air to push, causing the sound to come a fraction on a second late, not sure tho. Any help would be great y'all!



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    Re: My sub hits a fraction of a second late..

    Do you have time delay/alighnment in your deck ?




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    Re: My sub hits a fraction of a second late..

    Never heard of that amp before. It says it's class D but the efficiency is only 64%....that seems odd.

    My only thought is that maybe your sub amp is delaying the signal noticeably?

    Wait...that amp has a variable phase control. Make sure it is set to no phase adjustment.

    How does that amp sound by the way? Sure is pretty.



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    Re: My sub hits a fraction of a second late..

    Quote Originally Posted by Pataforce8 View Post
    How does that amp sound by the way? Sure is pretty.
    Never used the nine.1, but had quite a few products from ED. It was pretty solid stuff, and the amps put out a clean signal. This was years ago though. Their quality control is lacking now though, as far as their subs go at least. One of my more recent setups was a pair of 11kv2 on a nine.2x, and those subs were hot garbage compared to the 16kv2 that I had several years prior. That nine.2x was pretty good though.




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    Re: My sub hits a fraction of a second late..

    Quote Originally Posted by Louisiana_CRX View Post
    Do you have time delay/alighnment in your deck ?
    Na, still just have the stock head unit.

    Quote Originally Posted by Pataforce8 View Post
    Never heard of that amp before. It says it's class D but the efficiency is only 64%....that seems odd.

    My only thought is that maybe your sub amp is delaying the signal noticeably?

    Wait...that amp has a variable phase control. Make sure it is set to no phase adjustment.

    How does that amp sound by the way? Sure is pretty.
    This amp is nuts man. It can push 1000 watts all day with ease. Phase has always been set to 0 so I don't know what it is!! >=/



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    Re: My sub hits a fraction of a second late..

    The phase may be backwards in the amp...try and go to the opposite end 180 and listen...I've seen gain pots in amps and amp remotes backwards from how they were listed




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    Re: My sub hits a fraction of a second late..

    Quote Originally Posted by Louisiana_CRX View Post
    The phase may be backwards in the amp...try and go to the opposite end 180 and listen...I've seen gain pots in amps and amp remotes backwards from how they were listed
    Yeah I'll try that.



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    Re: My sub hits a fraction of a second late..

    Group delay. If you are running a ported box tuning lower may help, or better yet try going sealed.




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    Re: My sub hits a fraction of a second late..

    Check both of your coils



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    Re: My sub hits a fraction of a second late..

    nice sub




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    Re: My sub hits a fraction of a second late..

    I test the phase of my subs in relations to the mid/tweeters by playing some hardcore techno music like Happy Hardcore that has basically the highest BPM than any other music.

    Adjust the phase control(either fixed or variable) until the bass hits the same time as the mids. If your amp does not have a phase control then just invert the pos/neg speaker wire at the amp OR(not both) the speaker terminal on the box, the result is just like flipping the 0-180 phase switch.



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    Re: My sub hits a fraction of a second late..

    I likey my phase switches. I have a whole spectrim 0-180



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    Re: My sub hits a fraction of a second late..

    Quote Originally Posted by Haunz View Post
    Group delay. If you are running a ported box tuning lower may help, or better yet try going sealed.
    What I was thinking.



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