Subs,subs,subs.........

Discussion in 'Car Subwoofers' started by dodat31, Dec 9, 2008.

  1. dodat31

    dodat31 Full Member

    This searching is giving me a headache! I look and calulate and come up with what i think i want and bam something shoots it down.
    SO,would someone PLEASE give me a sub solution for following setup:

    want single sub 8"-12"
    pushing it with a Kicker 08ZX700.5 amp....rms rating 210w sub ch at 4ohm
    A good decent spkr and box bought seperatly is OK

    budget $100-$150

    sorry for over and over questions but there is jus to much to learn in this area.

    Thanks
     
  2. pedro quiroga

    pedro quiroga Well-Known Member

    can you build your own box?
     
  3. Eleu

    Eleu Full Member

  4. dodat31

    dodat31 Full Member

    yes....but not that into doing it .....lazy is a word that comes to mind.

    off the shelf to my car ( without much effort) is what i want ....
     
  5. jonnyv713

    jonnyv713 The Young Gun of CAT

    the sound wil be MUCH MUCH better!
     
  6. aznboi3644

    aznboi3644 Full Member

    this means sacrificing subwoofer performance a lot.
     
  7. dodat31

    dodat31 Full Member

    what is the difference in a home/hand made box made with the same materials (?) same deminsions, as a sto bought one?

    do U use thicker sides ?

    remember i ain't looking for perfection here.....just close to it.....:lol:

    what does a "downfire" box do for U ?

    Thanks
     
  8. aznboi3644

    aznboi3644 Full Member

    no sub is the same...there is no universal enclosure. If don't want to build one than I'd suggest contacting some builders. RCBenclosures builds and ships enclosures for a good price...as well as Fisher Customs.

    With buying a prefab crap enclosure you have no idea how it is going to sound...90% of the time it sound like crap. Really peaky and weak lows...very narrow response bandwith in some cases. I had people thinking I had two 12's or two 15s with 1000 watts when I had an old 12 inch sub and 300 watts.

    The enclosure is 90% of the sound...put a good sub in a poor enclosure and expect poor performance.

    Each sub has set parameters and the enclosure must be designed and built to suit to driver and surroundings.

    Downfiring is more of to protect a driver from objects
     
    Last edited: Dec 10, 2008
  9. jonnyv713

    jonnyv713 The Young Gun of CAT

  10. dodat31

    dodat31 Full Member

    but Master.....how does one find these parameters and such? :confused:

    do U build a box, listen to it, and tune it or then build another box ?
     
  11. jayz85

    jayz85 Full Member

    once you have the sub and amp combo ready... you let us all here know... and then someone will design a box for your sub or subs according to how much room you have by giving the max measurements you have to use.. width, height and what not... but you gotta tell us what you want... loud, SQ or something along those lines and then GEN or AZN or sometimes Ranger will come in with a design for you.
     
  12. aznboi3644

    aznboi3644 Full Member

    Please no Master here...sometimes the thiele small parameters are on the manufactures website or in the driver manual.

    Well it takes experience of designing, building, and testing enclosures...after a lil while you know what works well with what and what doesn't.
     
  13. dodat31

    dodat31 Full Member

    U guys know this stuff sounds like. THANKS for all the info. Still looking for a good deal on a sub, maybe after Christmas sales. Hopefully, by then i'll have the amp in and a wire for my sub so maybe I can test some out in vehicle and get an idea what i want. Maybe hit a car show somewhere close by......

    Master statement is a memory from the old tv series "Kunfu". in his flash backs to the "monkastry" he would often make the comment, "But Master, How blab, blab, blab. "

    tell my age now.........
     
    Last edited: Dec 17, 2008
  14. dodat31

    dodat31 Full Member

    OK.....picked up a small used downfire box from local shop for $10.
    it's 13.25"x 12"x 6.5" = .58ish (?) cu'

    i went with this sub.....Elemental Designs SQ10

    RMS Power handling: 250 Watts I can put 210 to it
    DC Resistance (Re) 3.5 ohm
    Resonant Frequency (Fs) 25.5 Hz
    Electrical "Q" (Qes) .32
    Mechanical "Q" (Qms) 2.7
    Total "Q" (Qts) .29
    Equivalent Volume (Vas) 46.7 L
    One Way Linear (Xmax) 9.3 mm
    Cone Area (Sd) 350 cm2
    Sensitivity (Spl) 86.7db
    single 2 or 4 Ohm
    Mounting Dimensions: Depth; 3"”
    Sealed box volume required: .3 - .5 cubic feet
    Ported box volume required: .5 - .8 cubic feet
    Hole; 10”

    will i be ok for some tight SQ base with little out of spec box or should i add some peanuts...........lol ?

    Thanks
     
  15. aznboi3644

    aznboi3644 Full Member

    that enclosure is WAYYY too big for that sub...the sub is OK at best. Mechanical handling sucks big time. thermal power handling 300 watts is easy.

    I would glue some blocks of wood into the enclosure to bring down the size to 0.3 cubic feet.

    With an enclosure that size you will bottom out the driver with 100 watts or less.
     
  16. dodat31

    dodat31 Full Member

    inside measures 12.25" x 10.75"x 4.5" .........that should be alittle better...No?