Free Air Sub

Discussion in 'Car Subwoofers' started by CadillacETC1997, Jun 15, 2007.

  1. CadillacETC1997

    CadillacETC1997 Well-Known Member

    Well guys i got a new car
    2003 Cadillac Seville STS
    425 Watt Bose 4.0 Surround Sound
    all the goodies
    basically the factory system is bad ass, however the sub needs some work, i have my 3 jls hooked up via a line inverter, but the factory 12 inch sub mounted in the rear deck bottoms out. I would usually just remove this for increased porting but i take my subs out every so often to help move stuff and a nicer sub mounted in the rear deck would be nice. Any ideas on a good 12 inch free air sub? Ive been looking at one of these, a Pioneer Ts W302f 12"

    Heres a little info on the factory system in the car, believe me no highs no lows must be bose applies to all except this car, it has 3 2 inch tweets on the dash, 2 8 inch subs in the front doors, 2 6.5 inch mids in the rear doors and then the 12 inch sub.

    Breakthrough Car Audio: The '98 Cadilliac Seville - Popular Mechanics
    [​IMG]
     
  2. aznboi3644

    aznboi3644 Full Member

    Elemental Designs 13Kv.2
     
  3. CadillacETC1997

    CadillacETC1997 Well-Known Member

    i figured youd hit on ED
    thing is though im looking for a sub with SQ and SPL and will cooperate and work well connected to the factory amp, not some external one. The factory sub is 100 watts at 2 ohms i believe. I dont need anything outrageous or with high rms and peak power levels because then id need to amp it.
     
  4. aznboi3644

    aznboi3644 Full Member

    100 watts is perfectly fine for the 13Kv.2/3

    IB setups don't need near as much power as using an enclosure
     
  5. CadillacETC1997

    CadillacETC1997 Well-Known Member

    ok ill be sure to check that one out as well too then
    any more i should look at? I looked and JL hasnt made an awesome free air in a LONG time. Pioneer i know doesnt make good speaks and their subs arent too bad but ive herd their free airs are pretty good for the money. Kicker was another brand i was considering but on a quick search i could only find 8" from Kicker
     
  6. TheViking

    TheViking Well-Known Member


    Wanna bet!
     
  7. CadillacETC1997

    CadillacETC1997 Well-Known Member

    ok
    well almighty vik
    whats your suggestion?
     
  8. G3n3R@1

    G3n3R@1 Full Member

    im ready for an explanation!
     
  9. aznboi3644

    aznboi3644 Full Member

    Viking lol...you bastard

    Yeah some subs are pretty hard core and can handle rate rms free air.

    For instance my 19Ov.2, when eD tests they test them free air with over 1000 watts IIRC
     
  10. Ranger SVO

    Ranger SVO Full Member

    I've been here before. I've had to do this before. The customer insisted on keeping the Bose system, no problem. I added a line out converter directly to the factory sub speaker lead. Then we added an amp and our subwoofer.

    It almost worked.

    The Bose system DOES NOT like line out converters. As soon as we disonnected it (the LOC) the Bose system began working normal.

    We needed a line out converter that was invisible to the Bose system. Enter Soundgate. The LOCX is the converter that you need.

    2-Channel High Performance Line Output Converter - SoundGate.com

    No other converter worked, so forget trial and error, I've already been there.
     
  11. CadillacETC1997

    CadillacETC1997 Well-Known Member

    Ranger
    not sure if you got me.
    I already have my jls hooked up to the bose via a line out adn they sound fine
    however when i REMOVE my subs i miss the bass and i want to swap the factory bose 12 for a better free air 12, the factory 12 bottoms out at higher bass levels which is why i think installing a better 12 to replace the factory 12 in the deck would help out!
     
  12. electrolytic

    electrolytic Full Member

    Pioneer subs are kife! stay away lol, anything but that. I'd go infinity or mtx
     
  13. aznboi3644

    aznboi3644 Full Member

  14. Ranger SVO

    Ranger SVO Full Member

    Must learn to pay better attension. I have done what you want. We added a Alpine amp and a Focal woofer (customer furnished equipment) to Cadillac Bose system a while back. It was an improvement over stock and the reason it stuck in my mind is that I went through 3 different line out converters before we found one that worked right.

    Anyway in the end it worked and it was an improvement overstock.
     
  15. aznboi3644

    aznboi3644 Full Member

    Yes Ranger you should pay better attenTion

    lol
     
  16. CadillacETC1997

    CadillacETC1997 Well-Known Member

    idea idea which exact sub? any recommendations?
     
  17. Ranger SVO

    Ranger SVO Full Member

    All I remember is that it was a Focal woofer. I remember it because the trouble I had with the car and that no one does Focal around here.
     
  18. sl0wm03

    sl0wm03 Full Member

    Free air sub is a sub that dosen't need a special enclosure, right.
     
  19. Ranger SVO

    Ranger SVO Full Member

    Right, the trunk actually becomes the enclosure. But there are a couple of problems, effeciency, there is none. So free air set ups usually require alot of power to make it work right. The other problem is control. In an enclosure we can control the woofers responces. No such control exists in free air.

    Over Excursion is another problem, but that usually comes from turning the gain up to increase the bass, due to the low efficiency. Not the woofers or the amps fault.
     
  20. CadillacETC1997

    CadillacETC1997 Well-Known Member

    ok then
    so its worth replacing in your opinion Ranger...