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going from a 10" to an 8"

Discussion in 'Audio & Video' started by IDtrucks, Dec 5, 2011.

  1. Dec 5, 2011 at 11:16 PM
    #1
    IDtrucks

    IDtrucks [OP] Just out for a rip are ya bud?

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    so i want to keep both back seats in my new truck, that means i would have to swap my kicker 10" with a 400w amp for an 8" (powered by the same amp) so i can fit it in the cubby hole under one of my seats. For the people who have had 10s and 8s will it be a depressing shift with a huge loss of bass, or if i get a decent 8" that can take the mono 400w sub will it not be too bad of a switch? thanks!!
     
  2. Dec 5, 2011 at 11:30 PM
    #2
    MY50cal

    MY50cal I think I'm getting the Fear.

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    Yes.
    paging ItalynStylion...
     
  3. Dec 6, 2011 at 5:27 AM
    #3
    XJBaylor

    XJBaylor Well-Known Member

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    There are way too many variable to say without more information. In the end, a bigger speaker (all other things equal) will play louder and lower. But all things are never equal. One of the most important variable would be the enclosure. Was your old enclosure well designed for your sub? Was it ported or sealed? Can you you find a sub that plays well in the enclosure you will be installing?
    Other variables will include the sensitivity of the new sub, the quality of the installation and the impedance (was your old sub 4 ohm, can your amp power your new sub at 2 ohms?)
    You will likely lose a significant amount of volume, simply because (and I am just guessing) you are going to be going to a very small sealed enclosure to fit it into the cubbyhole. Just make sure you know the size of your new enclosure, and find a sub that models well in that airspace. You should still be able to create a system that you are happy with, and have some extra room in the cab.
     
  4. Dec 6, 2011 at 5:51 AM
    #4
    ItalynStylion

    ItalynStylion Sounds Gooooood

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    ^Good advice for sure.

    A ported 8 should do well with regard to keeping up with a sealed 10. So if you can port, absolutely do it. Try and find something with a higher sensitivity and good Xmax. I think the JBL GTO 8's are pretty good with both of those in mind.

    What kind of space do you have to work with? What are your plans for an enclosure?
     
  5. Dec 6, 2011 at 6:13 AM
    #5
    mattg43

    mattg43 Well-Known Member

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    If you are talking a 1st gen, and using the little cubby under the seat with an 8 vs a 10 on top of the seat, you will have to do some compromising.
     
  6. Dec 6, 2011 at 10:30 AM
    #6
    06SR5canada

    06SR5canada Well-Known Member

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    Just cuz a sub is smaller dosent mean it will have less output. They have single 8s hitting over 150dbs now
     
  7. Dec 6, 2011 at 1:39 PM
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    XJBaylor

    XJBaylor Well-Known Member

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    True. I guess. However, he also stated that he is installing the 8 in the cubbyhole below the rear seat. How many 8" subs do you know of that can hit over 150db in a (very) small sealed box with 400w behind them?
     
  8. Dec 6, 2011 at 1:51 PM
    #8
    ItalynStylion

    ItalynStylion Sounds Gooooood

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    I sat here and calculated that you'd need a sub with 120db efficiency to get 150db on 400watts. Then I remembered cabin gain....IDIOT...brain fart lol
     
  9. Dec 7, 2011 at 4:36 PM
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    IDtrucks

    IDtrucks [OP] Just out for a rip are ya bud?

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    ya i know im going to lose some, just wondering how much.

    i dont think i need the highest end top of the line 150 db 8" i can get. So whats the populous's recommendation for an 8"? i dont know the dimensions of the cubby but anyone thats seen the 1st gen xcab knows what im talking about and might be able to give an idea. Also incase there was any confusion it would be the bigger of the two cubbys, just sayin.
     
  10. Dec 7, 2011 at 4:46 PM
    #10
    jtav2002

    jtav2002 Kenny Fuckin Powers

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  11. Dec 7, 2011 at 6:00 PM
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    mattg43

    mattg43 Well-Known Member

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    If I were looking, I would be between the JBL GTO804, or the Alpine Type R 8. Let your budget decide, but I have doubts you would be disappointed with either.
     
  12. Dec 7, 2011 at 6:58 PM
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    XJBaylor

    XJBaylor Well-Known Member

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    Agreed. The Alpine will run you around $100, the JBL can be had for around $70. If you look at the threads on other forums the Alpine is considered by many to be one of the best 8" subs available. The JBL is probably the single best bargain in subs, and I can't remember hearing a single complaint. I have never heard one personally, but I have heard great things. There may be something comparable from Parts Express, but outside of that I don't think anything compares.

    Nothing wrong with the JL 8", but I don't think it is the best bang for the buck either.
     
  13. Dec 7, 2011 at 11:38 PM
    #13
    IDtrucks

    IDtrucks [OP] Just out for a rip are ya bud?

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    the apline looks great, and even its above my power level. the amp in only a 400 with 200 rms,
     
  14. Dec 8, 2011 at 5:27 AM
    #14
    XJBaylor

    XJBaylor Well-Known Member

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    From what I understand, the Alpine requires a lot of power (350+) to really sing.

    You didn't state what amp you have, but if it is stable at 2ohms you might consider going with a sub that has dual 4ohm voice coils. You could wire then wire it to 2ohms and likely get a little more out of your amp. The Polk MM840 and Alpine SWR-843D are both DVC subs with 4ohm voice coils. Alternatively, I think the JBL would still sound amazing with 200 watts behind it.

    What is the model number of the amp you are currently using?

    EDIT: I actually see you mentioned mono in your first post, though not explicitly stating you have a monoblock amp. If that is the case, it will almost certainly be stable at 2ohms, and less resistance could help you maximize your current amp.
     
  15. Dec 8, 2011 at 6:13 AM
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    mattg43

    mattg43 Well-Known Member

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    If you are at 200rms, go with the JBL. I would go to the Type R with 400w available.

    RMS, not peak or max watts.

    And FYI - Amazon has the JBL for $55 shipped, and they are authorized last I checked.
     
  16. Dec 8, 2011 at 8:46 AM
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    ItalynStylion

    ItalynStylion Sounds Gooooood

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    Agreed, the JBL is actually quite efficient for an 8 (which is almost an oxymoron). If you can squeeze 400RMS at 2ohms out of that amp, like Keith said, get the type R in a dual 4ohm coils.
     
  17. Dec 8, 2011 at 10:04 AM
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    Cinco

    Cinco Team no taco

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    As stated above. I really loved the JBL GTO 8s I had a few years back. Very efficiant and great sounding. I do have a Type R I have been playing with and that thing is a monster. That sub is worth all the hype. For the money you cannot find a better 8in then the JBL. NOTHING at the price point will beat it.
     
  18. Dec 9, 2011 at 12:54 AM
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    IDtrucks

    IDtrucks [OP] Just out for a rip are ya bud?

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    alright, jbl it is then! thanks for all the help!:D
     
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