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    bgowdy31's Avatar
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    aq hdc3 vs 4th order

    Ok so ive told that a hdc3 18 and a 4th order does not work out very well can some one kinda explain why this is....
    Thanks in advance



    MY NEW RIDE- 2001 HYUNDAI SANTA FE (BEST SCORE 147+DB 30-SEC MUSIC-BB2400 & 1 HDC3-18 W/STOCK ELEC)
    2 SOUNDQUBED SDC2.5-15'S ~ 7.06 CUBE @ 37HZ ~ SHARK 2500(FOR NOW,2 STRAPPED LATER)@ 1OHM
    STOCK ALT ~ 1 STOCK DEKA & 2 AGM'S ~ 4 RUNS OF 1/0(2+/2-)


    WIFEYS 03 FOCUS SE TRUNK SYSTEM ~ 143+DB 30 SEC MUSIC AVG
    1 KICKER L7 15 ~ 5.6 CUBE @ 38HZ ~ KICKER ZX1000.1 @ 2 OHM
    STOCK ALT ~ 1 STOCK BATTERY ~ ONLY 6GA POWER WIRE


    2010 FCBC 450SD 3RD OVERALL~2011 FCBC 450SD CHAMPION~YOUTUBE->bgowdy31 & bgowdy3131




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    Re: aq hdc3 vs 4th order

    There's a notion that subs optimized for ported boxes aren't that great in a 4th, but this has been dispelled. They work just fine. Lol. Although, some say that the suspension is too stiff and a 6th might be better.

    I've never done the 18, but I've done a a 4th for a single and a pair of HDC3 10's and it was awesome. Never did try a 6th for them, but should.



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    Re: aq hdc3 vs 4th order

    That what they the guy told me.... I looked at 6th order designs i found one that looks like my 4th but both sides are ported instead of half sealed and half ported like a normal 4th. Lol so i dont figure i could convert mine into a 6th lol



    MY NEW RIDE- 2001 HYUNDAI SANTA FE (BEST SCORE 147+DB 30-SEC MUSIC-BB2400 & 1 HDC3-18 W/STOCK ELEC)
    2 SOUNDQUBED SDC2.5-15'S ~ 7.06 CUBE @ 37HZ ~ SHARK 2500(FOR NOW,2 STRAPPED LATER)@ 1OHM
    STOCK ALT ~ 1 STOCK DEKA & 2 AGM'S ~ 4 RUNS OF 1/0(2+/2-)


    WIFEYS 03 FOCUS SE TRUNK SYSTEM ~ 143+DB 30 SEC MUSIC AVG
    1 KICKER L7 15 ~ 5.6 CUBE @ 38HZ ~ KICKER ZX1000.1 @ 2 OHM
    STOCK ALT ~ 1 STOCK BATTERY ~ ONLY 6GA POWER WIRE


    2010 FCBC 450SD 3RD OVERALL~2011 FCBC 450SD CHAMPION~YOUTUBE->bgowdy31 & bgowdy3131

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    Re: aq hdc3 vs 4th order

    Lemme see your box. You don't know the specs? And a 32-37hz tune isn't the best tune for a 4th. Who did the box? Generally, they're closer to 50hz. How much port area do you have?



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    Re: aq hdc3 vs 4th order

    Very stiff suspension is not 4th friendly, but a few have made them work. Talking to audiophil a while back as he had TS specs on an HDC I'm pretty sure he recommended a 2:1 with sealed being twice the size of the ported section. Opposite of most 4th orders.

    When I tried mine in a 4th they were fine on low/med power but at full power the subs kinda "popped" and couldn't move with the notes. Like they were being restricted. It was a normal 2:1 ported to sealed 4th.

    Now they're in a series tuned 6th order and work much better, gained around 5dB's and it's very musical. Plays pretty flat from 30Hz to 50Hz.




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    Re: aq hdc3 vs 4th order

    Quote Originally Posted by TaylorFade View Post
    Lemme see your box. You don't know the specs? And a 32-37hz tune isn't the best tune for a 4th. Who did the box? Generally, they're closer to 50hz. How much port area do you have?
    One of my friends built it... Hes pretty good at building boxs... I havnt had a chance to measure the box yet... But it may be the port in it now for the low tune... I would rather it be tuned higher myself. Im gonna be changing it out for aero ports that i have in a diff box. The other box with aeros peaked at 52



    MY NEW RIDE- 2001 HYUNDAI SANTA FE (BEST SCORE 147+DB 30-SEC MUSIC-BB2400 & 1 HDC3-18 W/STOCK ELEC)
    2 SOUNDQUBED SDC2.5-15'S ~ 7.06 CUBE @ 37HZ ~ SHARK 2500(FOR NOW,2 STRAPPED LATER)@ 1OHM
    STOCK ALT ~ 1 STOCK DEKA & 2 AGM'S ~ 4 RUNS OF 1/0(2+/2-)


    WIFEYS 03 FOCUS SE TRUNK SYSTEM ~ 143+DB 30 SEC MUSIC AVG
    1 KICKER L7 15 ~ 5.6 CUBE @ 38HZ ~ KICKER ZX1000.1 @ 2 OHM
    STOCK ALT ~ 1 STOCK BATTERY ~ ONLY 6GA POWER WIRE


    2010 FCBC 450SD 3RD OVERALL~2011 FCBC 450SD CHAMPION~YOUTUBE->bgowdy31 & bgowdy3131

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    Re: aq hdc3 vs 4th order

    Quote Originally Posted by TaylorFade View Post
    Lemme see your box. You don't know the specs? And a 32-37hz tune isn't the best tune for a 4th. Who did the box? Generally, they're closer to 50hz. How much port area do you have?

    This is the only pic i have right now.... Yea the square port is ugly i kno.......
    Start of 4th order wall - CarAudio.com Rides Gallery



    MY NEW RIDE- 2001 HYUNDAI SANTA FE (BEST SCORE 147+DB 30-SEC MUSIC-BB2400 & 1 HDC3-18 W/STOCK ELEC)
    2 SOUNDQUBED SDC2.5-15'S ~ 7.06 CUBE @ 37HZ ~ SHARK 2500(FOR NOW,2 STRAPPED LATER)@ 1OHM
    STOCK ALT ~ 1 STOCK DEKA & 2 AGM'S ~ 4 RUNS OF 1/0(2+/2-)


    WIFEYS 03 FOCUS SE TRUNK SYSTEM ~ 143+DB 30 SEC MUSIC AVG
    1 KICKER L7 15 ~ 5.6 CUBE @ 38HZ ~ KICKER ZX1000.1 @ 2 OHM
    STOCK ALT ~ 1 STOCK BATTERY ~ ONLY 6GA POWER WIRE


    2010 FCBC 450SD 3RD OVERALL~2011 FCBC 450SD CHAMPION~YOUTUBE->bgowdy31 & bgowdy3131

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    Re: aq hdc3 vs 4th order

    That doesn't say much about the enclosure really. It looks "tossed" together though.

    I wish you the best, but as I told you before, buying something like that is not the way to go. Better off building it yourself with a design that will work with the truck.




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    Re: aq hdc3 vs 4th order

    Quote Originally Posted by pro-rabbit View Post
    That doesn't say much about the enclosure really. It looks "tossed" together though.

    I wish you the best, but as I told you before, buying something like that is not the way to go. Better off building it yourself with a design that will work with the truck.
    Like i said before i kno i got some work ahead ima have a some help from a vet once i get time work on it. The box it self is sturdy double baffled and stuff. The square ports the only thing thrown thrown on it. Thats only a temp because he want to keep his aeros. I have my on aeros when i have time to change it out.... And with eryone aaying this i was jus wunderin.. It pounds right now as is with out it walled.



    MY NEW RIDE- 2001 HYUNDAI SANTA FE (BEST SCORE 147+DB 30-SEC MUSIC-BB2400 & 1 HDC3-18 W/STOCK ELEC)
    2 SOUNDQUBED SDC2.5-15'S ~ 7.06 CUBE @ 37HZ ~ SHARK 2500(FOR NOW,2 STRAPPED LATER)@ 1OHM
    STOCK ALT ~ 1 STOCK DEKA & 2 AGM'S ~ 4 RUNS OF 1/0(2+/2-)


    WIFEYS 03 FOCUS SE TRUNK SYSTEM ~ 143+DB 30 SEC MUSIC AVG
    1 KICKER L7 15 ~ 5.6 CUBE @ 38HZ ~ KICKER ZX1000.1 @ 2 OHM
    STOCK ALT ~ 1 STOCK BATTERY ~ ONLY 6GA POWER WIRE


    2010 FCBC 450SD 3RD OVERALL~2011 FCBC 450SD CHAMPION~YOUTUBE->bgowdy31 & bgowdy3131

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    Re: aq hdc3 vs 4th order

    Quote Originally Posted by TaylorFade View Post
    Lemme see your box. You don't know the specs? And a 32-37hz tune isn't the best tune for a 4th. Who did the box? Generally, they're closer to 50hz. How much port area do you have?
    I tuned my first 4th to 35 and although it hit the lows like crazy my cabin gain was too high for it to flatten out the response right so i had a huge dip from 40-50hz. Bumped it up to 40hz and it's much better, though I'm going to lower it down to 38 for my next box. All depends what you wanna get out of it.

    OP one of the members on here did a 6th order for his HDC3 10 and it was flexing stuff left and right. @Buck did the box design so maybe he remembers who it was.




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    Re: aq hdc3 vs 4th order

    Quote Originally Posted by Kangaroux View Post
    OP one of the members on here did a 6th order for his HDC3 10 and it was flexing stuff left and right. @Buck did the box design so maybe he remembers who it was.
    Buck Box Designs /// 6th order AQ hdc3.0 single 10"




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