1. Sign-up to become a member, and most of the ads you see will disappear. It only takes 30 seconds to sign up, so join the discussion today!
    Dismiss Notice

Considering DIY with old car audio sub

Discussion in 'Archived Threads 2001-2004' started by JasonS, Jul 1, 2002.

  1. JasonS

    JasonS Stunt Coordinator

    Joined:
    Sep 5, 2000
    Messages:
    107
    Likes Received:
    0
    Trophy Points:
    0
    Hey all,

    I've got an old JBL 12in. GT subwoofer, and I'm thinking of using it in a home theater invironment if possible. I downloaded WinISD, and it gave me the following analysis. Excuse my nubie-ness, but would this be good?

    Driver : JBL GT122
    Project by : CN031
    Project for : you
    --
    Number of drivers : 1
    Box type : Vented
    Box size : 2.257 ft^3
    Tuning frequency : 38.05 Hz
    Vent : 1 vent(s)
    7.30 in length for each
    4.02 in round


    Relative
    Freq Gain SPL
    [Hz] [dB] [dB]
    20.00 -22.16 69.84
    25.00 -15.17 76.83
    30.00 -9.70 82.30
    35.00 -5.59 86.41
    40.00 -2.87 89.13
    45.00 -1.36 90.64
    50.00 -0.63 91.37
    55.00 -0.31 91.69
    60.00 -0.18 91.82
    65.00 -0.12 91.88
    70.00 -0.09 91.91
    75.00 -0.08 91.92
    80.00 -0.08 91.92
    85.00 -0.08 91.92
    90.00 -0.08 91.92
    95.00 -0.07 91.93
    100.00 -0.07 91.93
     
  2. Jeff Rosz

    Jeff Rosz Second Unit

    Joined:
    Sep 24, 2000
    Messages:
    335
    Likes Received:
    0
    Trophy Points:
    0
    it models good, it vents good, problem is with an Fs of 33hz it just isnt gonna get down low. you can extend its response with a larger cab but it still wont reach that lowest octave. and it will prob bottom out alot. maybe a lil room gain will help. you can certainly try it, mdf is cheap. would make a nice sub for music, but for HT i'd look for another driver.
     

Share This Page