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Reload Thread: RE XXX 15: sound quality build; ported or sealed

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    Re: RE XXX 15: sound quality build; ported or sealed

    What makes the old xxx better?







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    Re: RE XXX 15: sound quality build; ported or sealed

    Quote Originally Posted by Buck View Post
    OP what kind of music do you want to bump to?
    Rap, techno




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    Re: RE XXX 15: sound quality build; ported or sealed

    Nothing wrong with that ap amp at 4 ohm. It won't clip unless you get greedy with the gain and powa is powa as long as it is not clipping. As far as the box I built a 3.75 ft/3 net tuned at 30 htz and good god almighty it would get low and hammer all through the freq range I had it on a apsm at 1 ohm and it did very well had a lil peak aroun 40ish htz but all the same it sounded great on the ap amp although I did have the gains on the amp consertive.

    1 other thing is make sure u built the box with atleast 3/4 mdf and brace the shizz outta it and double your front wall thickness. Make sure you liquid nails the crap outta it (even though your car will smell like a construction site for a month or 2) use lotsa screws and countersink/piolet drill everything. That's a whole bunch of mass moving back and fourth even with "only" 2k on the sub.

    Prolly already know all this just sayin.




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    Re: RE XXX 15: sound quality build; ported or sealed

    Quote Originally Posted by mugen08 View Post
    What makes the old xxx better?
    XLB2 and the **** motors.



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    Re: RE XXX 15: sound quality build; ported or sealed

    Quote Originally Posted by mugen08 View Post
    Rap, techno
    Do ported.



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    Re: RE XXX 15: sound quality build; ported or sealed

    Quote Originally Posted by Silver-N-Black View Post
    XLB2 and the **** motors.
    Engrish prease




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    Re: RE XXX 15: sound quality build; ported or sealed

    I bought an 02 XXX recently off craigslist for $120, one of the four voice coils didn't register on the multimeter though I did wire up 2 of the 4 1ohm voice coils to 2ohm, threw it in a 3^3 box tuned to 26hz and the thing is so sick. Before this the best subwoofer I have had is 2 12" Shok Industry Tritons, which blew away my 2 12" Infinity reference subs. Even running 2 of 4 voice coils at 1500 Watts on the XXX, it hits the lows so much nicer than anything I have had before. I used to believe in budget cheap as can be setups, but now I am addicted to car audio and I am convinced the only way to do it is high power and high quality. It is totally worth buying the $300 subwoofer that will blow away two $100 subwoofers. I plan on getting my XXX reconed at either PSi or Fi...not sure which...I guess which ever has the best deal =] Time to figure out some components....oldskool RE kicks my *** though, is the point



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    Re: RE XXX 15: sound quality build; ported or sealed

    Quote Originally Posted by Buck View Post
    I see what you are saying, but that sub won't use that xmax in any box. And a lot of it has to do with the split coil not handling power as well as it should to even achieve those levels of excursion.

    OP what kind of music do you want to bump to?
    It'll handle enough power and do it in home audio in a large bo (9-12 cubes for the 18 sealed), but your right, any box that fits in a car won't likely be effecient enough to use the xmax, especially if he's playing real music through the thing. I really would never use one of these in a car period, but if I did I still couldn't port it in good conscience.

    Also to OP, this sub is going to be peaky no matter what box you use it in if you want to get any output out of it. The split coil design is ALOT of metal and that leads to very high inductance, these things fall flat on their face above 60hz, just like the older xxx's tended to do.



    Quote Originally Posted by sdmtnbiker420 View Post
    JL is for ballers. Theres a reason all the biggest rappers sing about JL, Zapco, Alpine..... and not Lightning audio or Pyle. It's all about the BALLER FACTOR.


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    Re: RE XXX 15: sound quality build; ported or sealed

    Quote Originally Posted by mugen08 View Post
    Engrish prease
    XBL^2 is a low distortion motor topology utilizing a grooved top plate to redistribute the flux field in a such a way that as the coil and motor keep a BL value that is at least 70% of it's value at rest over a longer distance than is feasible with a standard design.

    lol, I'm screwing with you man.. XBL^2 basically means the woofer can move further with less distortion than a regular subwoofer design. So they tend to be very good at SQL.



    Quote Originally Posted by sdmtnbiker420 View Post
    JL is for ballers. Theres a reason all the biggest rappers sing about JL, Zapco, Alpine..... and not Lightning audio or Pyle. It's all about the BALLER FACTOR.


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    Re: RE XXX 15: sound quality build; ported or sealed

    Sealed it is. Thanks.




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    Re: RE XXX 15: sound quality build; ported or sealed

    For all the new xxx haters:

    http://reaudio-rus.ru/reviews/review_xxx.pdf




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    Re: RE XXX 15: sound quality build; ported or sealed

    Quote Originally Posted by Buck View Post
    that sub won't use that xmax in any box. And a lot of it has to do with the split coil not handling power as well as it should to even achieve those levels of excursion.
    Has this been tested? I have seen videos where the sub was obviously at 4" peak to peak excursion....




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    Re: RE XXX 15: sound quality build; ported or sealed

    they aren't saying the new XXX is garbage, just not what it used to be



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    Re: RE XXX 15: sound quality build; ported or sealed

    Quote Originally Posted by soloXgt View Post
    they aren't saying the new XXX is garbage, just not what it used to be
    LOL at the second part of your sig..

    So basically they used to have a more linear frequency response, but less SPL; the new ones get as low, hit harder, but are more peaky... I don't see how that makes them inferior all together, just in the linearity aspect... Depends on what you are after.
    Anyways, here is some extreme excursion in a sealed box; I don't see where some people get their info (They don't have enough motor for full excursion)... RE XXX 12 RACK CITY - YouTube




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    Re: RE XXX 15: sound quality build; ported or sealed

    I love my xxx , re fix the teansel and voice coil problem they now use complete vc not the split one




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