Closed Thread
Results 1 to 15 of 15

Reload Thread: Need help with a design for 2 12" idq's

  1. #1
    PuZo's Avatar
    PuZo is offline Senior VIP Member



    Join Date
    Jan 2008
    Location
    Toronto, Canada
    Posts
    409
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    29 Post(s)

    Need help with a design for 2 12" idq's

    Im going to get someone to build me a box but i want to know what specs to build to. I want to go for sure sq so should i go sealed or ported also what hertz should it be tuned to? Will ported make a big difference compared to sealed? Thanks







  2. #2
    SPY's Avatar
    SPY
    SPY is offline CarAudio.com Veteran



    Join Date
    Jul 2007
    Location
    NY
    Posts
    5,222
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)

    Re: Need help with a design for 2 12" idq's

    Nice choice of subs.

    If you want SQ go with a sealed box, don't need to worry about hertz with a sealed box also.

    a ported box will be louder but will loose some SQ also. If you do go ported I would suggest tuning in the 30-32hz range.


    Also, if you looking for someone to build a box send me a PM.




  3. #3
    Immacomputer's Avatar
    Immacomputer is offline Cloud disappear



    Join Date
    Sep 2006
    Location
    Ocala/Oviedo, FL
    Age
    30
    Posts
    4,670
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    12 Post(s)

    Re: Need help with a design for 2 12" idq's

    My IDQ sounded much better ported than it did sealed. It was really lacking below 40hz in the sealed enclosure. I tried it in a smallish sealed (a little smaller than 1 cube), large sealed (~3 cubes), large ported (3 @ 28hz), and small ported (1.5 @ 30hz). It had the flattest response in the 1.5 @ 30hz enclosure in my car and in my room. The sealed boxes just didn't have any low end extension at all. If you're looking for sub 40hz performance, you should really port them.



    Video 1
    I may make you feel but I can't make you think.
    Your sperm's in the gutter -- your love's in the sink.
    Video 2

  4. #4
    theothermike's Avatar
    theothermike is offline I HAVE NO LIFE, CA = LIFE



    Join Date
    May 2006
    Location
    Tampa
    Posts
    1,557
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)

    Re: Need help with a design for 2 12" idq's

    i disagree installed 2 idq 10's in my brothers 350z in .65 net sealed after displacement the subs were flat smooth and fast from 30 to 75. had plenty of lowend. it could have been your application in terms of car immacomputer. but in my experiences off 600 watts in the z it was sweet.

    what ride is this going in original poster?

    if it is a trunk car i would though agree with immacomputer. the extra output will help and i also agree on smaller size ported with a low tuning. 30hz and 1.8 i think would be spot on.



    System:
    Fronts:ID Oem's & TBI Hdss Front Amps: Sundown Sax 100.2 & 100.4
    Subwoofer: 2x 12" Fi X D4s Sub Amps: Sundown Saz 1500D
    Headunit: Alpine CDA-9887 Batteries / Alternator: Powermaster / Mechman
    Deadener: Raamat BXT Ensolite Alarm: Clifford 50.5x
    References:
    -Premieraudio-Sundownz-Iamamp3pimp-Kpr10is-Jmanpc- MemphisLove-Greekpower-The 727 Kid-Gixxer9-Mobieous-Audiobahnuser18-Thewes-Steveyhustle-Gymfreak101-go_go_thrash

  5. #5
    PuZo's Avatar
    PuZo is offline Senior VIP Member

    Threadstarter


    Join Date
    Jan 2008
    Location
    Toronto, Canada
    Posts
    409
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    29 Post(s)

    Re: Need help with a design for 2 12" idq's

    Its going in a camry so should i port it? The higher the hertz means what




  6. #6
    shaneb's Avatar
    shaneb is offline CarAudio.com Veteran



    Join Date
    Aug 2008
    Location
    Fort Worth, TX
    Posts
    2,437
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)

    Re: Need help with a design for 2 12" idq's

    you should visit ID's forum, on their website...



    Sold To: L22rules; jeffrey1970; PABowhunter4life; allout13; atsaubrey; horsemanwill
    Bought From: brentbarrie; wgsj_fortvalley; horsemanwill; jaredspl; atsaubrey

    Reference Thread - http://www.caraudio.com/forum/showthread.php?t=365202
    Engine Whine Free Since 11.26.08

    Team Mafia "Killing the competition with silence"

  7. #7
    Immacomputer's Avatar
    Immacomputer is offline Cloud disappear



    Join Date
    Sep 2006
    Location
    Ocala/Oviedo, FL
    Age
    30
    Posts
    4,670
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    12 Post(s)

    Re: Need help with a design for 2 12" idq's

    Quote Originally Posted by theothermike View Post
    i disagree installed 2 idq 10's in my brothers 350z in .65 net sealed after displacement the subs were flat smooth and fast from 30 to 75. had plenty of lowend. it could have been your application in terms of car immacomputer. but in my experiences off 600 watts in the z it was sweet.

    what ride is this going in original poster?

    if it is a trunk car i would though agree with immacomputer. the extra output will help and i also agree on smaller size ported with a low tuning. 30hz and 1.8 i think would be spot on.
    Yea, it's going to be vehicle dependent and some vehicles may help squeeze out some more low end, especially vehicles with very small cabins like a 350z. Mine was in a '99 Acura Integra hatchback and also in my room. I ran it in my room for the most part but I did do a lot of swapping and playing around with it and my AV12 in my room and in my car. In both cases, the IDQ 12 just didn't have much output below 40hz where as my av12 had no problems at all.



    Video 1
    I may make you feel but I can't make you think.
    Your sperm's in the gutter -- your love's in the sink.
    Video 2

  8. #8
    PuZo's Avatar
    PuZo is offline Senior VIP Member

    Threadstarter


    Join Date
    Jan 2008
    Location
    Toronto, Canada
    Posts
    409
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    29 Post(s)

    Re: Need help with a design for 2 12" idq's

    my camry has a decent sized trunk, so what do you guys suggest, ported and at what hertz or sealed. I am going for PURE SQ. I am sure wince I'm giving the subs 1100 rms it will be loud enough for me.




  9. #9
    theothermike's Avatar
    theothermike is offline I HAVE NO LIFE, CA = LIFE



    Join Date
    May 2006
    Location
    Tampa
    Posts
    1,557
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)

    Re: Need help with a design for 2 12" idq's

    pure sq. id suggest 2.0 @ 28hz. a little louder and still very flat but not as flat as 28hz id suggest 1.8 @ 30hz

    size is net after port and sub displacement for both sizes.

    Mike-



    System:
    Fronts:ID Oem's & TBI Hdss Front Amps: Sundown Sax 100.2 & 100.4
    Subwoofer: 2x 12" Fi X D4s Sub Amps: Sundown Saz 1500D
    Headunit: Alpine CDA-9887 Batteries / Alternator: Powermaster / Mechman
    Deadener: Raamat BXT Ensolite Alarm: Clifford 50.5x
    References:
    -Premieraudio-Sundownz-Iamamp3pimp-Kpr10is-Jmanpc- MemphisLove-Greekpower-The 727 Kid-Gixxer9-Mobieous-Audiobahnuser18-Thewes-Steveyhustle-Gymfreak101-go_go_thrash

  10. #10
    Immacomputer's Avatar
    Immacomputer is offline Cloud disappear



    Join Date
    Sep 2006
    Location
    Ocala/Oviedo, FL
    Age
    30
    Posts
    4,670
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    12 Post(s)

    Re: Need help with a design for 2 12" idq's

    If you're planning on running 1100 watts to a pair of them, I wouldn't go larger than 1.5 cubes tuned to 28-30hz. My IDQ was able to reach full excursion on a 300wrms Kenwood amp. Any more power and I wouldn't gain anything from it but I would run the risk of a mechanical failure. Be careful setting your gains with that kind of power and I wouldn't go over 1.5 cubes either.



    Video 1
    I may make you feel but I can't make you think.
    Your sperm's in the gutter -- your love's in the sink.
    Video 2

  11. #11
    PuZo's Avatar
    PuZo is offline Senior VIP Member

    Threadstarter


    Join Date
    Jan 2008
    Location
    Toronto, Canada
    Posts
    409
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    29 Post(s)

    Re: Need help with a design for 2 12" idq's

    Any other suggestions? So i should im for 1.5 cubes at 28 hz?




  12. #12
    budahbuddy803's Avatar
    budahbuddy803 is offline CarAudio.com Veteran



    Join Date
    Feb 2006
    Location
    Clemson, SC
    Posts
    4,703
    Post Thanks / Like
    Images
    14
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    7 Post(s)

    Re: Need help with a design for 2 12" idq's

    Man how about this. You, yourself, build a box that is 1cuft per sub sealed. I think you will get the best SQ sealed no matter what. Be careful with your gain, those subs might not like all the power you have. I liked my IDQ15v2, idq10v3, and idmaxv312 sealed better than ported in terms of SQ.




  13. #13
    PuZo's Avatar
    PuZo is offline Senior VIP Member

    Threadstarter


    Join Date
    Jan 2008
    Location
    Toronto, Canada
    Posts
    409
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    29 Post(s)

    Re: Need help with a design for 2 12" idq's

    Does it make any difference that ill be listening to mostly rock?
    Last edited by PuZo; 10-23-2008 at 02:17 AM.




  14. #14
    vladi627's Avatar
    vladi627 is offline Senior VIP Member



    Join Date
    Sep 2008
    Location
    Houston, TX
    Posts
    180
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)

    Re: Need help with a design for 2 12" idq's

    if you listen to mostly rock then you should get sealed




  15. #15
    PuZo's Avatar
    PuZo is offline Senior VIP Member

    Threadstarter


    Join Date
    Jan 2008
    Location
    Toronto, Canada
    Posts
    409
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    29 Post(s)

    Re: Need help with a design for 2 12" idq's

    So if I make a box at 1.5 cu at 30 hz, is this for both subs? Is the inside of each box closed off or do both subs share the same airspace?




Closed Thread

User Tag List

Posting Permissions

  • You may not post new threads
  • You may post replies
  • You may post attachments
  • You may edit your posts
1e2 Forum