1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Vented Double cab sub Box????

Discussion in 'Audio & Video' started by carolinataco, Dec 27, 2011.

  1. Dec 27, 2011 at 9:32 PM
    #1
    carolinataco

    carolinataco [OP] Well-Known Member

    Joined:
    Dec 21, 2008
    Member:
    #11799
    Messages:
    302
    Gender:
    Male
    Has anyone tried this box out yet? Is it any good? I thought on Vented or Ported boxes you need more air space than with a sealed box for the sub to work closer to its peak performance? Guess its made by R/T Enterprises. Couldn't find their actual web site...

    Link:
    http://www.amazon.com/Dual-Toyota-Tacoma-2005-Labyrinth/dp/B0057Y8KRY


    What they say:

    "It is a known fact that in order to create a 50% increase in your sub bass system you would need to double the power. For example, if you are hitting 135 dB's with an amp that produces 500 watts of RMS power, in order to hit 138 dB's (50% louder) you would need 1000 watts of RMS power. Taking it one step further, to double your dB''s (increase of 6 dB) you would need an additional 2000 watts of RMS power. However, if you are looking to add bass to your car audio system, but don't have the money to buy a new amp, you might want to consider upgrading your speaker box instead. Now you may be asking yourself how a simple subwoofer enclosure is going to achieve the same results as adding massive amounts of power? The short answer is by cutting a port hole in your sealed enclosure. With a sealed sub box you are hearing only half of what your subwoofer is producing. However, when you make access to the back side of your woofer via a port hole, the sound can increase up to double compared to designs where the woofer's back side is sealed off. There is no greater example of this than the "Labyrinth Power Port" that Obcon Sub Bass incorporates into all of their specialty truck boxes. Without adding an ounce of power to your current system the "Labyrinth Power Port" proves to be an easy and effective alternative to upgrading your low end on a limited budget."
     
  2. Dec 28, 2011 at 4:44 PM
    #2
    pinktaco808

    pinktaco808 Hot Steppa

    Joined:
    Jul 23, 2010
    Member:
    #40651
    Messages:
    2,785
    Gender:
    Male

    Please explain to me how that a 50% increase when that only a 3db increase?
     
  3. Dec 29, 2011 at 5:57 AM
    #3
    XJBaylor

    XJBaylor Well-Known Member

    Joined:
    Sep 21, 2010
    Member:
    #43621
    Messages:
    176
    Gender:
    Male
    First Name:
    Keith
    Plano, TX
    Vehicle:
    06 DCLB TRD Sport 4x4
    King coilovers with remote reservoirs, Deaver 12 leaf pack with 5100's, TRD exhaust, Kenwood 6160, Anthracite Sport Wheels
    SPL is a logarithmic measure.
     
  4. Dec 29, 2011 at 6:01 AM
    #4
    06SR5canada

    06SR5canada Well-Known Member

    Joined:
    Jul 22, 2011
    Member:
    #60338
    Messages:
    647
    Gender:
    Male
    Saskatchewan
    Vehicle:
    06 dblcab SR5
    2ndary air filter removed, flowmaster 40
    Every 3dbs is supposed to be around teice as loud to your ear, they also say as a rule of thumb that using a ported box will net you sround 3 dbs
     
  5. Dec 29, 2011 at 6:51 AM
    #5
    Lurkin

    Lurkin Well-Known Member

    Joined:
    May 21, 2009
    Member:
    #17497
    Messages:
    11,098
    First Name:
    Rod
    Pearland, TX
    Vehicle:
    09 PreRunner SR5 DC
    I'd avoid this since it does appear to be a supercrewsound box, or at least similar dimensions, which means .7 cu.ft. of airspace, which I don't think is close to sufficient for any 10" sub in a ported enclosure.
     
  6. Dec 29, 2011 at 7:14 AM
    #6
    MadMtnMikey

    MadMtnMikey Well-Known Member

    Joined:
    Aug 22, 2011
    Member:
    #62120
    Messages:
    1,478
    Gender:
    Male
    First Name:
    Mike
    Richmond/VaBeach
    Vehicle:
    03 DC 4x4 SR5 TRD
    This ^ plus the response above it.... System engineer on sonar equipment is my background, so I can confirm for anyone questioning.

    The only problem with going to a ported box from sealed, or vice versa, is that you change the SPL vs. frequency response of that enclosure mated with given sub and amp.

    Try to imagine it on a graph, where x axis is frequency and y axis is SPL at given frequency, changing the box is going to change that graph. make sense ?
     
  7. Dec 29, 2011 at 7:35 AM
    #7
    ItalynStylion

    ItalynStylion Sounds Gooooood

    Joined:
    Jun 15, 2009
    Member:
    #18467
    Messages:
    4,866
    Gender:
    Male
    First Name:
    Steven
    DFW, Tx.
    Vehicle:
    09 Double Cab TRD Sport 4x4
    Facts
    • Every additional 3db needs twice the power or twice the cone area.
    • Ported sub enclosures are said to give 3db increase. I disagree mainly becaue I don't care about peak numbers. A proper tuned box can yield well over 8db of increase at certain frequencies vs a sealed box. (I have graphs that can prove this and I'm more than happy to post them if you care to see them)
    • 10db is percieved to be twice as loud. 3db is likely the smallest increase you would notice.

    Go home and look at your receiver in your home theater setup. They typically read in db and count UP . Set it to a normal level. Now increase 3db (ex: from -20db to -17db) and check out how much louder it's gotten. What you're done is double the power but it's really not twice as loud. Not even close. Go from -20db to -10db and THAT is twice as loud.
     
  8. Dec 29, 2011 at 7:53 AM
    #8
    mattg43

    mattg43 Well-Known Member

    Joined:
    Feb 22, 2011
    Member:
    #51640
    Messages:
    846
    Gender:
    Male
    First Name:
    Matt
    Texas
    Vehicle:
    08 Prerunner SR5 DC
    SwingCase, driver side. PVC Bike rack. Aftermarket stereo.
    Steven nailed it

    There are several subs that will work in this airspace, but I do not see tuning frequency, so its hard to tell how well (or poorly) it will work.

    But, in general, I would agree - prefab ported boxes that you do not know enough about, or have the ability to check, are great to avoid.
     
  9. Dec 29, 2011 at 8:31 AM
    #9
    ItalynStylion

    ItalynStylion Sounds Gooooood

    Joined:
    Jun 15, 2009
    Member:
    #18467
    Messages:
    4,866
    Gender:
    Male
    First Name:
    Steven
    DFW, Tx.
    Vehicle:
    09 Double Cab TRD Sport 4x4
    I'm sure you could shoot them an email and ask about the tuning frequency. I didn't see the ports in that picture. Where are they located?
     
  10. Dec 30, 2011 at 5:34 PM
    #10
    pinktaco808

    pinktaco808 Hot Steppa

    Joined:
    Jul 23, 2010
    Member:
    #40651
    Messages:
    2,785
    Gender:
    Male
    Did you look good in the pics man? The ports are in the middle.

    [​IMG]
     
  11. Dec 31, 2011 at 6:07 AM
    #11
    06SR5canada

    06SR5canada Well-Known Member

    Joined:
    Jul 22, 2011
    Member:
    #60338
    Messages:
    647
    Gender:
    Male
    Saskatchewan
    Vehicle:
    06 dblcab SR5
    2ndary air filter removed, flowmaster 40
    must have nearly no air space left over....
     
  12. Dec 31, 2011 at 6:18 AM
    #12
    TruthInLies313

    TruthInLies313 Well-Known Member

    Joined:
    May 13, 2008
    Member:
    #6587
    Messages:
    395
    Gender:
    Male
    First Name:
    Blaine
    Texas
    Vehicle:
    05 V6 TRD Sport DC
    Tinted, 5701 Viper Alarm Electric Start, 6 Inch Fabtech Lift, 17'' XD Hoss Rims, K&N 77 Series Intake, BHLM, Black Emblems, Color Matched Dash rings, 2 JL 10's, Pioneer Double Din Head Unit
    I have this same box, whether its made by the same people or not, it works great. I have to JL 10's in there and I have no problem with it. I don't know much about the tuning but it sounds good to me and thats all that matters.
     
  13. Dec 31, 2011 at 8:28 AM
    #13
    ItalynStylion

    ItalynStylion Sounds Gooooood

    Joined:
    Jun 15, 2009
    Member:
    #18467
    Messages:
    4,866
    Gender:
    Male
    First Name:
    Steven
    DFW, Tx.
    Vehicle:
    09 Double Cab TRD Sport 4x4
    I saw the pic, but can you show me on THIS picture where that is? I don't see an exit. I was thinking it has to be up high somewhere because the area is already short on mounting depth so there's no way you would put it behind the subs.

    [​IMG]
     
  14. Dec 31, 2011 at 9:24 AM
    #14
    saitcho

    saitcho Well-Known Member

    Joined:
    Oct 21, 2011
    Member:
    #65596
    Messages:
    80
    Gender:
    Male
    New Orleans
    Vehicle:
    '11 DC 4x4 trd off road
    I like their logic along the lines of "port a box by drilling a hole in the back and VOILA!"
     
  15. Dec 31, 2011 at 9:26 AM
    #15
    saitcho

    saitcho Well-Known Member

    Joined:
    Oct 21, 2011
    Member:
    #65596
    Messages:
    80
    Gender:
    Male
    New Orleans
    Vehicle:
    '11 DC 4x4 trd off road
    nvm i read wrong. ignore
     
  16. Dec 31, 2011 at 9:33 AM
    #16
    saitcho

    saitcho Well-Known Member

    Joined:
    Oct 21, 2011
    Member:
    #65596
    Messages:
    80
    Gender:
    Male
    New Orleans
    Vehicle:
    '11 DC 4x4 trd off road
    nevermind i just saw they are using a square vent that wraps around. Didnt see pinktacos diagram.
     
To Top