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help understanding isobarik setup....

Discussion in 'General Car Audio Discussions' started by GohillaAudio, Mar 21, 2008.

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  1. GohillaAudio

    GohillaAudio Full Member

    ok, how i understand, you use a set of subs, put them in face to face, wire them out of phase, what i dont understand is how that setup would be any louder than a single sub? the subs are in a push/pull configuration so when the inner driver hits out, the inner driver hits in, the only thing i can think of is that with them set up like that, each sub would have to work half as hard to obtain the same sound,

    has anyone ever heard 4 subs in a sealed box wit isobaik config? if there are true benefits, it would be the perfect setup for my application
     
    GohillaAudio, Mar 21, 2008
    #1
  2. pedro quiroga

    pedro quiroga Well-Known Member

    man i havent seen or heard of a set up like that in years.
     
    pedro quiroga, Mar 21, 2008
    #2
  3. aznboi3644

    aznboi3644 Full Member

    you don't gain any output...just more power handling and half the box volume.

    Where did you hear that isobaric loading leads to more SPL??
     
    aznboi3644, Mar 21, 2008
    #3
  4. GohillaAudio

    GohillaAudio Full Member

    i didnt say anything about spl, im just very, very mis-informed...lol iso is like the japanese language to me.....i dont know sheet...lol

    i would love to figure out how i could manage to pack 4 15"s in my trunk (i have 2 more of those powerbass subs (i planned on getting an suv, but i found this car for dirt cheap, and its nearly mint)

    i just picked up a new amp that shouldnt have a problem pushing all 4 15's
     
    GohillaAudio, Mar 21, 2008
    #4
  5. aznboi3644

    aznboi3644 Full Member

    well the only thing isoloading does is halve the vas which halves the enclosure requirements.

    Well how your amp pushes the four 15's depends on the impedance of the coils on the subs and the load stability of the amp.
     
    aznboi3644, Mar 21, 2008
    #5
  6. pedro quiroga

    pedro quiroga Well-Known Member

    [​IMG]

    V shaped box.2 on top 2 on the bottom

    [​IMG]
    A WALL LOL.

    [​IMG]

    STRIAGHT UP THE WHOLE TRUNK!

    [​IMG]

    ANOTHER V SHAPE

    [​IMG]

    PASS THRU STYLE.JUST CLOSER TOGETHER.
     
    pedro quiroga, Mar 21, 2008
    #6
  7. GohillaAudio

    GohillaAudio Full Member

    yea, i know, the subs are 4 ohm dvc, if i wire each sub in parallel i will acheive a 2 ohm load out of each sub, then if i wire 2 subs in parallel again i will obtain a 1 ohm load, then i can wire the other 2 up the same way, but then wire the leads from each set in series i will have a final 2 ohm load with all four subs, the amp i got is 1 ohm stable and pushes 1900w RMS at 2 ohms
     
    GohillaAudio, Mar 21, 2008
    #7
  8. GohillaAudio

    GohillaAudio Full Member

    boy, im giddy like a school-girl! i cant wait for my amp to come in! i STOLE it at 400.00
     
    GohillaAudio, Mar 21, 2008
    #8
  9. pedro quiroga

    pedro quiroga Well-Known Member

    what did you get?
     
    pedro quiroga, Mar 21, 2008
    #9
  10. GohillaAudio

    GohillaAudio Full Member

    its a CMA Ul-a2500
     
    GohillaAudio, Mar 21, 2008
    #10
  11. pedro quiroga

    pedro quiroga Well-Known Member

    a what:confused: can you post a link?
     
    pedro quiroga, Mar 21, 2008
    #11
  12. GohillaAudio

    GohillaAudio Full Member

    specs can be found at:

    Critical Mass Audio


    i got it from guy my brother was in the army with, its coming from va, i live in missouri, so it shouldnt be more then 4-5 days
     
    GohillaAudio, Mar 21, 2008
    #12
  13. pedro quiroga

    pedro quiroga Well-Known Member

    sweeeeet amp
     
    pedro quiroga, Mar 21, 2008
    #13
  14. GohillaAudio

    GohillaAudio Full Member

    i hope so, i have never heard of the company before, but it looks nice, and retailed for like 2g's
     
    GohillaAudio, Mar 21, 2008
    #14
  15. pedro quiroga

    pedro quiroga Well-Known Member

    Last edited: Mar 22, 2008
    pedro quiroga, Mar 21, 2008
    #15
  16. electrolytic

    electrolytic Full Member

    Nice!

    Critical Mass UL-A2500 Amplifier

    Product Information
    FEATURES:

    * Mono block digital subwoofer amplifier
    * Remote bass boost at 60Hz control: 0-18dB
    * Balanced low input & high input
    * Line out ( by pass)
    * Variable subsonic filter 15~30Hz, 18dB/OCT
    * Variable low pass filter 40~230Hz, 24dB/OCT
    * Variable bass boost at 60Hz control: 0-18dB
    * Phase control 0º~180º
    * Protection circuit for thermal, short circuit and reverse polarity connection of Battery

    SPECIFICATIONS:

    * Frequency response 15Hz~250Hz
    * RMS power at 4OHM mono 1300 W
    * RMS power at 2OHM mono 1900 W
    * RMS power at 1OHM mono 2500 W
    * Max power 5000W @14.4V
    * T.H.D 0.01%
    * Input sensitivity 200mV~7V
    * Input impedance 20K ohms
    * Damping factor >500
    * S/N ratio 105dB
    Dimensions: 16" x 10.5" x 2"
     
    electrolytic, Mar 21, 2008
    #16
  17. cccullen

    cccullen Full Member

    damn, that amps sounds like a beast! does it put out rated power?
     
    cccullen, Mar 21, 2008
    #17
  18. G3n3R@1

    G3n3R@1 Full Member

    it better if reme from unique whips uses critical mass! haha anyone notice the pictures along the bottom?
     
    G3n3R@1, Mar 22, 2008
    #18
  19. danracer

    danracer Full Member

    lol...nice amp btw...remember to post pics of the amp when u get it lol ohh and internal pics if u want lol :D
     
    danracer, Mar 23, 2008
    #19
  20. GohillaAudio

    GohillaAudio Full Member

    thanks, no worries there
     
    GohillaAudio, Mar 23, 2008
    #20
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