Closed Thread
Page 1 of 2 1 2 LastLast
Results 1 to 15 of 27

Reload Thread: Sundown 12" Neo Driver 4th Order Bandpass

  1. #1
    Rawr-DQ's Avatar
    Rawr-DQ is offline !!!!Vote Third Party!!!!



    Join Date
    Dec 2004
    Location
    Fort Myers, FL Posts:____________31,337,666,999
    Age
    27
    Posts
    2,882
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Sundown 12" Neo Driver 4th Order Bandpass

    I decided to move over here because I might as well build something this week.

    I calibrated and tested this neo oddball with a WT3 woofer tester; do these specs look alright; does the box have any flaws I should be careful of falling into.


    Trying out a 4th order bandpass design


    Box Properties
    Name:
    Type: Bandpass Single-Tuned Box

    Shape: rectangle, Bandpass
    with two chambers

    Chamber 1 - lower-freq.
    Vb = 6.368 cu.ft
    Fb = 39.39 Hz
    QL = 5.207
    F3 = 27.99 Hz
    Fill = heavy



    Chamber 2 - upper-freq.
    Vb = 2.176 cu.ft
    Fb = 45.89 Hz
    QL = 6.239
    F3 = 70.23 Hz
    Fill = none
    No. of Vents = 2
    Vent shape = round
    Vent ends = no flush
    Dv = 6 in
    Lv = 30 in

    The box, the second smaller chamber will house about 14" of the port, they're 6" diameter and 30" long







    I did more testing; here are the SS wt3 program:

    Test Lead Calibration


    Test lead calibration with 1k ohm resistor


    Series Free Air


    Series Vas Cal
    missing

    Parallel Free Air


    Parallel Vas Cal
    missing
    Last edited by Rawr-DQ; 08-07-2011 at 11:42 PM.



    Quote Originally Posted by kickerassman View Post
    i was thinking some thing like this..... get a reall fine but strong sharp cable like them tension cables tie it around your neck and tie it to something..... then get some supper supper supper glue and glue your hands to your head.when the glue dries jump of the building with the cable cutting your head off and you would have your head glued to your hands ...... some one would see that and be like wtf omg that dude ripped his head off ... he mst have been pisssed!!!



    My Current Build Log: (16 8" Sundown subwoofers)
    http://www.caraudio.com/forum/showthread.php?t=367352




  2. #2
    Rawr-DQ's Avatar
    Rawr-DQ is offline !!!!Vote Third Party!!!!

    Threadstarter


    Join Date
    Dec 2004
    Location
    Fort Myers, FL Posts:____________31,337,666,999
    Age
    27
    Posts
    2,882
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: Sundown 12" Neo Driver 4th Order Bandpass

    Coil a free air (individual coil)


    Coil a vas (individual coil)


    Coil b free air (individual coil)


    Coil b vas (individual coil)


    Polarity Reversed (one coil) Parallel Free Air (trouble shooting)
    Last edited by Rawr-DQ; 08-07-2011 at 11:43 PM.



    Quote Originally Posted by kickerassman View Post
    i was thinking some thing like this..... get a reall fine but strong sharp cable like them tension cables tie it around your neck and tie it to something..... then get some supper supper supper glue and glue your hands to your head.when the glue dries jump of the building with the cable cutting your head off and you would have your head glued to your hands ...... some one would see that and be like wtf omg that dude ripped his head off ... he mst have been pisssed!!!



    My Current Build Log: (16 8" Sundown subwoofers)
    http://www.caraudio.com/forum/showthread.php?t=367352

  3. #3
    Rawr-DQ's Avatar
    Rawr-DQ is offline !!!!Vote Third Party!!!!

    Threadstarter


    Join Date
    Dec 2004
    Location
    Fort Myers, FL Posts:____________31,337,666,999
    Age
    27
    Posts
    2,882
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: Sundown 12" Neo Driver 4th Order Bandpass

    forgot to post woofer p0rn; here ya go; can anyone say back plate p0rn?
















    Quote Originally Posted by kickerassman View Post
    i was thinking some thing like this..... get a reall fine but strong sharp cable like them tension cables tie it around your neck and tie it to something..... then get some supper supper supper glue and glue your hands to your head.when the glue dries jump of the building with the cable cutting your head off and you would have your head glued to your hands ...... some one would see that and be like wtf omg that dude ripped his head off ... he mst have been pisssed!!!



    My Current Build Log: (16 8" Sundown subwoofers)
    http://www.caraudio.com/forum/showthread.php?t=367352

  4. #4
    surreal's Avatar
    surreal is offline On my katy perry sht



    Join Date
    Jan 2010
    Location
    OK
    Posts
    615
    Post Thanks / Like
    Mentioned
    3 Post(s)

    Re: Sundown 12" Neo Driver 4th Order Bandpass

    What were the woofer's specs? A flat response there wont quite be flat in car.. And you have fill set to heavy - Im pretty positive you want that set to none as no one in caraudio uses fill.

    Edit - Qes of 4.x? Doesnt appear right.. Thats in QMS range..

    Edit2 - 280grams? Thats like 45 quarters. You sure? A QES that high would be like super IB.



    I do stuff

  5. #5
    Rawr-DQ's Avatar
    Rawr-DQ is offline !!!!Vote Third Party!!!!

    Threadstarter


    Join Date
    Dec 2004
    Location
    Fort Myers, FL Posts:____________31,337,666,999
    Age
    27
    Posts
    2,882
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: Sundown 12" Neo Driver 4th Order Bandpass

    Quote Originally Posted by surreal View Post
    What were the woofer's specs? A flat response there wont quite be flat in car.. And you have fill set to heavy - Im pretty positive you want that set to none as no one in caraudio uses fill.

    Edit - Qes of 4.x? Doesnt appear right.. Thats in QMS range..
    No that was 1 of two coils specs you seem to be mixing up. Yes, it has a high qts but jacob had this to say:

    Quote Originally Posted by sundownz
    As mentioned in the for sale all I could recall was high Qts on it -- we had good luck out of it in about 1 cube sealed despite what a box model program says that will do

    Nick Lemons (Stereo Integrity) borrowed it for a while and reported that it was an enjoyable listen.

    I noticed most of the specs were incorrect for the vas cals for the series and parallel wiring; must of mixed up when I was making screenshots and editing.



    Quote Originally Posted by kickerassman View Post
    i was thinking some thing like this..... get a reall fine but strong sharp cable like them tension cables tie it around your neck and tie it to something..... then get some supper supper supper glue and glue your hands to your head.when the glue dries jump of the building with the cable cutting your head off and you would have your head glued to your hands ...... some one would see that and be like wtf omg that dude ripped his head off ... he mst have been pisssed!!!



    My Current Build Log: (16 8" Sundown subwoofers)
    http://www.caraudio.com/forum/showthread.php?t=367352

  6. #6
    surreal's Avatar
    surreal is offline On my katy perry sht



    Join Date
    Jan 2010
    Location
    OK
    Posts
    615
    Post Thanks / Like
    Mentioned
    3 Post(s)

    Re: Sundown 12" Neo Driver 4th Order Bandpass

    I cant say Ive ever seen a sub with an EBP that low.. Might benefit from a tigher coil perhaps? Weird.

    Ill tell you most people dont design 4ths for a flat response. Technically it is the way to do it for best sound, but people normally enjoy the peakiness of a larger front chamber.

    Depending on what vehicle this is for and where it will be placed, within the passband, design it for an upward slope. 3-6db from bottom to top or so. This in-vehicle should still give you a good low end presence with a pleasing blend.



    I do stuff

  7. #7
    Rawr-DQ's Avatar
    Rawr-DQ is offline !!!!Vote Third Party!!!!

    Threadstarter


    Join Date
    Dec 2004
    Location
    Fort Myers, FL Posts:____________31,337,666,999
    Age
    27
    Posts
    2,882
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: Sundown 12" Neo Driver 4th Order Bandpass

    I believe the cars resonance is around 40-45hz; based on what stratus01rt told me. This is going in a stratus.



    Quote Originally Posted by kickerassman View Post
    i was thinking some thing like this..... get a reall fine but strong sharp cable like them tension cables tie it around your neck and tie it to something..... then get some supper supper supper glue and glue your hands to your head.when the glue dries jump of the building with the cable cutting your head off and you would have your head glued to your hands ...... some one would see that and be like wtf omg that dude ripped his head off ... he mst have been pisssed!!!



    My Current Build Log: (16 8" Sundown subwoofers)
    http://www.caraudio.com/forum/showthread.php?t=367352

  8. #8
    surreal's Avatar
    surreal is offline On my katy perry sht



    Join Date
    Jan 2010
    Location
    OK
    Posts
    615
    Post Thanks / Like
    Mentioned
    3 Post(s)

    Re: Sundown 12" Neo Driver 4th Order Bandpass

    Ah, I would definitely slope it then if youre going for a flat response. You may get the peak there and youll normally get the biggest usable bump in the 30-40 range.

    Is this facing back, or firing in cabin?



    I do stuff

  9. #9
    Rawr-DQ's Avatar
    Rawr-DQ is offline !!!!Vote Third Party!!!!

    Threadstarter


    Join Date
    Dec 2004
    Location
    Fort Myers, FL Posts:____________31,337,666,999
    Age
    27
    Posts
    2,882
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: Sundown 12" Neo Driver 4th Order Bandpass

    it will be firing in cabin



    Quote Originally Posted by kickerassman View Post
    i was thinking some thing like this..... get a reall fine but strong sharp cable like them tension cables tie it around your neck and tie it to something..... then get some supper supper supper glue and glue your hands to your head.when the glue dries jump of the building with the cable cutting your head off and you would have your head glued to your hands ...... some one would see that and be like wtf omg that dude ripped his head off ... he mst have been pisssed!!!



    My Current Build Log: (16 8" Sundown subwoofers)
    http://www.caraudio.com/forum/showthread.php?t=367352

  10. #10
    The_Grimy_One's Avatar
    The_Grimy_One is offline CarAudio.com Veteran



    Join Date
    Apr 2011
    Location
    Phoenix, AZ
    Posts
    4,015
    Post Thanks / Like
    Mentioned
    45 Post(s)

    Re: Sundown 12" Neo Driver 4th Order Bandpass

    That sub is too pretty, yum.



    Deck: Pioneer 80PRS
    Front Stage: Incriminator Audio I65C / Front Amp: Alpine MRV F540
    Sub: 2 10" Obsidian V3 / Sub Amp: MMATS 2000.1
    Bought From: ge_off_me, Boomsday, Chemmins, impactas, Sleazebagger, NoPh33rRaCiNg, fasfocus00, 50cents, flastrongman, pborcich, ace_800, GAMEOVERCCA
    Sold To: Jamesmington, Juicee, Bunkrd you, Donnie Darko, ge_off_me, destined2race, todd131, Imjtnotu, mclerico83, aimology, Audiobahn, kpetree
    Traded With: ge_off_me, Imtjnotu, 04lariat


  11. #11
    Rawr-DQ's Avatar
    Rawr-DQ is offline !!!!Vote Third Party!!!!

    Threadstarter


    Join Date
    Dec 2004
    Location
    Fort Myers, FL Posts:____________31,337,666,999
    Age
    27
    Posts
    2,882
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: Sundown 12" Neo Driver 4th Order Bandpass

    Alright well I just got two sheets of mdf; got my co worker to bring it home on his truck. Box will be done this weekend.

    The Re-Stall will entail the following.

    - Complete clean out of the car it's filthy
    - Remove two remaining seats; possibly remove dash
    - Repaint a silicone sound deadner in entire vehicle
    - Rebuild amp wiring; and Low voltage electrical
    - Install 3 Alpine PDX4.150s
    - Install 1 Sundown 3000D
    - Build 2 Chamber Fourth Order Bandpass; Will have two 6" x 30" long ports
    - Build Car Puter

    The Car Puter will likely replace the head unit; I want a touch screen to build into the dash.

    P.S.

    MDF is retarded now a days, back in 04 it was under twenty; Lowes got 35 a sheet out of me.



    Quote Originally Posted by kickerassman View Post
    i was thinking some thing like this..... get a reall fine but strong sharp cable like them tension cables tie it around your neck and tie it to something..... then get some supper supper supper glue and glue your hands to your head.when the glue dries jump of the building with the cable cutting your head off and you would have your head glued to your hands ...... some one would see that and be like wtf omg that dude ripped his head off ... he mst have been pisssed!!!



    My Current Build Log: (16 8" Sundown subwoofers)
    http://www.caraudio.com/forum/showthread.php?t=367352

  12. #12
    surreal's Avatar
    surreal is offline On my katy perry sht



    Join Date
    Jan 2010
    Location
    OK
    Posts
    615
    Post Thanks / Like
    Mentioned
    3 Post(s)

    Re: Sundown 12" Neo Driver 4th Order Bandpass

    Yeah, prices ****. Im starting to use birch but I really hate the splinters..
    What were the official numbers you went with?



    I do stuff

  13. #13
    Rawr-DQ's Avatar
    Rawr-DQ is offline !!!!Vote Third Party!!!!

    Threadstarter


    Join Date
    Dec 2004
    Location
    Fort Myers, FL Posts:____________31,337,666,999
    Age
    27
    Posts
    2,882
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: Sundown 12" Neo Driver 4th Order Bandpass

    I haven't started the box yet; but when I put it up in the program; I designed it to fit in the car; The flat frequency response was more of a coincidence but I'm not going to stress over it; because there is no real way to tell what it's going to do in the car.

    So I'm just gonna build as is; and tweak ports and the small chamber as needed.




    Got the car cleaned and painted with silicon to act as a sound deadner...took 4.5 hours.

    THE MESS!









    I sat there and vac'd every square in and it still looks dirty as hell








    One thorough coat applied in the skipped trunk and through out the car.






    Quote Originally Posted by kickerassman View Post
    i was thinking some thing like this..... get a reall fine but strong sharp cable like them tension cables tie it around your neck and tie it to something..... then get some supper supper supper glue and glue your hands to your head.when the glue dries jump of the building with the cable cutting your head off and you would have your head glued to your hands ...... some one would see that and be like wtf omg that dude ripped his head off ... he mst have been pisssed!!!



    My Current Build Log: (16 8" Sundown subwoofers)
    http://www.caraudio.com/forum/showthread.php?t=367352

  14. #14
    treylittlefield's Avatar
    treylittlefield is offline CarAudio.com Elite



    Join Date
    May 2009
    Location
    Sand Rock, AL
    Posts
    1,423
    Post Thanks / Like
    Mentioned
    22 Post(s)

    Re: Sundown 12" Neo Driver 4th Order Bandpass

    holy ****...and i thought my truck was dirty. lol



    I-Trader-http://www.caraudioclassifieds.org/forum/itrader.php?u=1860

  15. #15
    Buck's Avatar
    Buck is offline always low Buck is a Supporting Member of the forum!



    Join Date
    May 2008
    Location
    Nashville
    Posts
    18,378
    Post Thanks / Like
    Mentioned
    255 Post(s)

    Re: Sundown 12" Neo Driver 4th Order Bandpass

    Quote Originally Posted by treylittlefield View Post
    holy ****...and i thought my truck was dirty. lol
    x2. Wow.



    Alpine - ASE (local) - Batcap - C&D Tech - CT Sounds - DC - eD - Excessive Amperage - Rainbow

Closed Thread
Page 1 of 2 1 2 LastLast

Posting Permissions

  • You may not post new threads
  • You may post replies
  • You may not post attachments
  • You may edit your posts
1e2 Forum