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    RollinRemz05's Avatar
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    tuning help please

    im making a box for my T1 12" sub. Its gonna be 2.5 cu ft. I was thinking 32 Hz was good but im not too sure. I only listen to rap and i just need some boomy/rolly bass. Any suggestions is appreciated. Thanks.







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    phyphoestilic's Avatar
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    Re: tuning help please

    32-35hz would be fine for u.



    Lexus LS400 Setup
    Eclipse CD7000 (Running Active)
    Image Dynamic OEM CX64s
    Image Dynamics NX30 Tweeters
    US Acoustic USF600 x2, USF800 x2 (Zed Audio )
    150ft+ of Rammat
    IDMax12 1.5cft. I need to cut for IB
    25 feet 1/0 Stinger Expert, 15 feet 4 Stinger Pro
    Stinger Dream Series, Knu Konceptz Krystal Series RCAs

    Ref: (Bought From)Renegadesrun, IonSQL, CrazyJoker2, Alpine CDA-9815 , FI Car Audio, yournumber1dan , B_Campbell, jacobcopeland87, mike dressure x2, James_Bang, blue200sx
    (Traded w/) Iceteebone, sxkicker89
    (Sold To): James_Bang, timbo12, gsxrjjordan
    Ebay: PhyPhoestilic (100%)

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    Re: tuning help please

    what are the pros and cons of tuning around 30 as opposed to like 38-40? i know its suppsed to be louder the higher you go up but how does it effect sound quality?



    ------------------------------------------------------------------------
    Head Unit:JVC KD-G430
    Mids/Highs: front doors - Momo MMC 6500 comp set
    half doors - Momo MMC 570 comp set
    Amp: Memphis PR 50x4
    Wire: Stinger 4ga. kit - for componets
    sub amp: autotek mm3000.1
    Subs: RD Alpha 12" (x2)

    refs: casper97ta; teamsubgopoof (bought from)

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    Re: tuning help please

    I think the general def for SQ is if ur system has the ability to play all frequencies at a flat level. Hence the reason so much turning is required. Of course people like different sounds and so they adjust it to however they like it. When u tune higher it's louder because it peaks higher toward those frequencies u tune to. 35-45hz is usually where most bass notes in rap/hip-hop songs hit. But when a sub woofer has to play below the box's tuning point it has a higher chance of over excursion, because there is very little to none dampening (don't know if thats the correct term) below the box's tuning frequency. That's why there's subsonic filter on amplifiers, to reduce the output below the tuning frequency of the box. People tune lower (28-30hz) to try to get the flattest response in all frequencies, That's the main reason they say to tune low for SQ.

    That's the quickest way i can sum it up. Of course if u really want to get into it, it gets alot more complicated. And u can find response graphs and stuff to help prove the point. 32-35hz seems like the midpoint to be able to get loud, and still reproduce the lower frequencies well.



    Lexus LS400 Setup
    Eclipse CD7000 (Running Active)
    Image Dynamic OEM CX64s
    Image Dynamics NX30 Tweeters
    US Acoustic USF600 x2, USF800 x2 (Zed Audio )
    150ft+ of Rammat
    IDMax12 1.5cft. I need to cut for IB
    25 feet 1/0 Stinger Expert, 15 feet 4 Stinger Pro
    Stinger Dream Series, Knu Konceptz Krystal Series RCAs

    Ref: (Bought From)Renegadesrun, IonSQL, CrazyJoker2, Alpine CDA-9815 , FI Car Audio, yournumber1dan , B_Campbell, jacobcopeland87, mike dressure x2, James_Bang, blue200sx
    (Traded w/) Iceteebone, sxkicker89
    (Sold To): James_Bang, timbo12, gsxrjjordan
    Ebay: PhyPhoestilic (100%)

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    Re: tuning help please

    awesome thanks man. i had heard something to that effect but didnt actually know how it worked. building a box right now for my 12''s but im probably going to get someone to port it for me since im new to it. one more question, if i want to compete in an spl comp where would be the best place for me to tune at?



    ------------------------------------------------------------------------
    Head Unit:JVC KD-G430
    Mids/Highs: front doors - Momo MMC 6500 comp set
    half doors - Momo MMC 570 comp set
    Amp: Memphis PR 50x4
    Wire: Stinger 4ga. kit - for componets
    sub amp: autotek mm3000.1
    Subs: RD Alpha 12" (x2)

    refs: casper97ta; teamsubgopoof (bought from)

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    phyphoestilic's Avatar
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    Re: tuning help please

    Quote Originally Posted by phillipcyoung View Post
    awesome thanks man. i had heard something to that effect but didnt actually know how it worked. building a box right now for my 12''s but im probably going to get someone to port it for me since im new to it. one more question, if i want to compete in an spl comp where would be the best place for me to tune at?
    Depends, if u want a box that u can use for good daily music and still be able to compete then probably 32-35hz. If ur going to build a separate box just for SPL competitions then probably 36-42hz. Some pure competitors tune as high as 45-55hz) but of course they have done a lot of setups and testing for the reason why they decide to tune there.



    Lexus LS400 Setup
    Eclipse CD7000 (Running Active)
    Image Dynamic OEM CX64s
    Image Dynamics NX30 Tweeters
    US Acoustic USF600 x2, USF800 x2 (Zed Audio )
    150ft+ of Rammat
    IDMax12 1.5cft. I need to cut for IB
    25 feet 1/0 Stinger Expert, 15 feet 4 Stinger Pro
    Stinger Dream Series, Knu Konceptz Krystal Series RCAs

    Ref: (Bought From)Renegadesrun, IonSQL, CrazyJoker2, Alpine CDA-9815 , FI Car Audio, yournumber1dan , B_Campbell, jacobcopeland87, mike dressure x2, James_Bang, blue200sx
    (Traded w/) Iceteebone, sxkicker89
    (Sold To): James_Bang, timbo12, gsxrjjordan
    Ebay: PhyPhoestilic (100%)

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