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SPL & SQ / Fabrication

Calculations, Concepts, Designs, Theories. All General SPL Or SQ Questions Can Be Discussed Here.

  1. Started by Booosh,

    So tonight at work I was discussing my upcoming sub build with a few guys. One of the master debaters argured that stuffing a sealed box with poly-fil was recommended and the other said it was a joke. Yes? No? Why? Thanks.

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    • 5 replies
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  2. Started by Srebra,

    What kind of Box you sugest for 2x Pioneer 307D2 just for SPL Street B class. Dimensions, Port, and other things. Thank`s

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    • 5 replies
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  3. Started by QuestionMan,

    Sorry for all the questions lately, but i'm getting very close to having my box complete, and want everything to be right. So, has anyone used bed liner for their boxes? I really like the look of it, and i really dont like the look of carpet (it's allright i guess, it just seems like everyone has it). Does anyone have suggestions on what kind i should buy and maybe a lil info on how to apply it and make it look good? Thanks to everyone thats replied to my questions.

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    • 4 replies
    • 946 views
  4. Started by cheese20323,

    I'm going to build a box just want to know were to buy mdf

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    • 11 replies
    • 945 views
  5. Started by tezin87,

    I'd appreciate any help you guys can give me on this.... I have a 12'' Nightshade on the way and need some help with the enclosure. I currently have a 10'' Fi BL in 1.6 cubes tuned to 35 hz in my reg cab Ranger. I know it isn't the prettiest thing in the world, but it's the optimum size for the 12'' Nightshade and I'd like to re-use it. My first problem is the mounting depth.....I'm going to have to add some spacer rings to allow the Nightshade to fit depth wise and obviously I'm going to have to increase the cutout to allow a 12'' 12 spoke basket to fit. I wanted to ask you guys what would be the best way to go about this? Should I make a few circular spacers around the…

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    • 10 replies
    • 945 views
  6. Started by charrison24,

    Im trying to make an enclosure for a single sa 12 but the only wood they sell out here is 18 mm thick mdf, I'm wondering how to compensate this into my cut sizes for the box I wanna build I wanna do 15 h x 17d x 22w with the port being 2" wide and tuned to 32 hertz any suggestions?

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    • 4 replies
    • 945 views
  7. Started by porkchop,

    I am not sure what is the right way here? the sub is inverted and firing up. the slot port uses the bottom of the enlosure and fires toward the driver side. not sure where the sub would do best at. thanks chop.

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    • 8 replies
    • 945 views
  8. Started by mysticstylezaudio,

    2 BTL 12's. The outside dims of the box are 17" tall x 24.75" deep x 33.5 wide. I am going to use a 8"pvc pipe and make my own flares but need help on length for 33htz tuning. Also with it being an 8 inch pipe do I have to have 8 inches from the back of the box to the end of the pipe? Also how long should the pipe be to be 33htz? Please help me with this.

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    • 5 replies
    • 945 views
  9. Started by 60ndown,

    im 'this' close to putting my rl-p back into i.b. config-the sound was just to my likeing- but it will mean sealing up the trunk (fold down seats-rear shelf) properly. im thinking fibre glass and mdf and bondo and expanding foam? any sujjestions before i make mistakes?

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    • 1 reply
    • 945 views
  10. Started by RaTtLz,

    hi everyone, I'm posting yet another topic to see if I can get any more excellent advice. In a previous post I stated that I was gonna build my own box. I know I want a sealed box. My goal is a real flat response. In my literature for my subs (Phoenix Gold titanium elite) they list 2 different recommendations for sealed boxes they are as follows: {Musical: Vb 1.6, F3 33 Hz} {SPL: Vb 1.0, F3 36Hz} My question to you guys is, Since I have 2 subs, What would be the outcome of making 1 box to musical specs and the other to the SPL spec. The speaker placement will be under the rear deck lid with subs facing the rear of the car. Car being my Chrysler 300. The box will be made…

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    • 8 replies
    • 944 views
  11. Alright so ive been doing spl for three years now on a team and I just bought two new dd audio digital designs m3b amps strapped on my incriminator audio 18ns and well after playing one song for a short period of time they locked up and burnt the coils are these speakers really true too there power because I was told they could handle 3000 whatts each easy and I dont have the right current going too them I have two 100 batts in back and a heavy duty alt thats running 14.6 volts and drops too 12.8 on lows please help me im beyound frustrated at this point.

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    • 4 replies
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  12. Started by kippo,

    hi, what is the rule of thumb for port tuning to gun for in SPL install? 45~48hz? cheers

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    • 2 replies
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  13. Started by emfk,

    I have a 98 single cab ford ranger. Idk if I'll be satisfied with shallow mounts. I've been looking into the fi q. I really think I could fit it behind the seats with he sub directly behind the armrest. I think the recommended sealed volume is about .6-.8 cu ft for one 10" , and I've always wanted to try a Q out. Especially for lows. Anyone see any hope in this? I'm starting to become a little discouraged. According to box calculators, I could make the box out to about .8 after sub displacement. If I should just stop wasting my time and settle on shallow mounts, please give me cheap recommendations. I've never really heard one.

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    • 8 replies
    • 941 views
  14. Started by MP3,

    Is tuning a ported box to 35 hz for daily use normal.

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    • 4 replies
    • 940 views
  15. Started by Maggotpuffin,

    I bought a box i just saw some of the glue is coming undone so im gonna glue it again and screw it down and seal up the inside. But i need to know what it is tuned to here are the measurments thanks in advanced. I have an L715 in a ported box the measurments are 16" h 40" w 17.5" d and the port is 3.5" w and 13.375" deep. I would like to know how many hz it is tuned too and how many cubic feet it is after port and sub displacement. Thank you

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    • 9 replies
    • 939 views
  16. Started by audio-neon,

    SO I am finally looking to replace my factory starting battery and I am looking at a couple different options. THe Powermaster 2400 or 2700 Kinetik HC2000 Tsunami/Yellowtop (not really looking at this option just put it here) NSB 90 Stinger 1000 (their newer line) Just looking for suggestions. My budget for battery would like to be less than 200 if used or 250 or less new.

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    • 5 replies
    • 939 views
  17. Started by vial,

    Height = 13Inches Width = 48 Inches split in half for two seperate compartments one for each sub. Depth1 = 6.5 Inches top Depth2 = 12 Inches bottem Now I donw know much about porting or tuneing. Im running two CVX's dual 2ohm VC wired @ 2ohm load off a 1500.1 zx This long skinny box fits behind my two seats in my pickup truck with one sub behind each seat. When my cousin made the box for me he put a board in the center to seperate the two subs so they both have different compartments. I wanted to maybe port the box to get a deeper boom. But i have no clue how big to cut a port hole... VentedCompact (MinimumEnclosureVolume from the manual CVX12 1.7…

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    • 4 replies
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  18. Started by krb1991,

    One ten sundown sd2 series ported.or 2 e series tens sealed. Which would have more output wanting to hit low still hope sealed would do that for me as ive only done ported in cars. Any input?

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    • 6 replies
    • 938 views
  19. Started by Blazinloud,

    hey guys, im about to build a ported box to sit on my back seat, just for a little fun. amp is an saz1500d@1 ohm wired up to a diehard gold with 2/0 welding cable I realize box recommendations are 1.5 to 2 cubes ported at around 30-35hz with 12-15sq inches of port area per cube, but i was wondering if there was something more exact due to my lower power and config (being in a truck on the seat) its going to be a slot port because im going to use re's box calculator. oh and i planned on going sub firing up and port facing the windshield, is this a good or bad idea? im just looking for a daily street beater

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    • 4 replies
    • 938 views
  20. Started by mwerling1212,

    I was wondering if i could run two rl-p 18's in only 7.6 cubes sealed after the sub displacement. Sounsplinter suggests 4 cubes for each 18, so would running them in a smaller box not be a good idea?

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    • 8 replies
    • 937 views
  21. Started by mwerling1212,

    I have a 1990 lincoln towncar, and i need help deciding on where the sub and port should go. I had my ss rl-p18 in there, sub/port back, but i didnt like that. I cant put the sub forward because ltc trunks are like pits with no clear passage to the cab if you get what im saying. Thanks

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    • 6 replies
    • 937 views
  22. Started by LivinLife,

    I want to create my own blueprints for my own boxes. Is there any tutorial of some sort to organize and create my own blueprints? What about a tutorial for BassBox Pro? Thank you.

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    • 2 replies
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  23. Started by ronrico418,

    Shizzzon as always if anyone would llike to chime in feel free. Shizzzon has been such a big help to me I wanted to ask him in particular about something I know I have faith in him for. My Port Love everyones ideas though so again chime away! 4 Shizzzzle I've been trying to send you a message w/ my phone #s and invite to for you and whomever to stay at mine and Kelly's home. For some reason I'm not able to send. In the attempted PM i got carried away w/ the following so I'm just making it a topic so I don't lose it. (computer has been acting up maybe on last leg) This would be the help I need from you for my "big boy" system! My previous favorite enclosure was…

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    • 2 replies
    • 936 views
  24. Started by Lucky 76,

    I wanted to paint my port chrome and layer it in plexi. What would provide me with the greatest reflectivity as far as spray paint goes? I looked into mirror finish film but it seems to be quite pricy. I wanted to spend around 50 dollars max for about 25 sq ft.

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    • 11 replies
    • 935 views
  25. Started by dbjunior,

    currently running a huge box with a fi q18 takes up the entire back seat of my truck. i love the output for the power i have and the low tuning, but it needs to come out for a carseat. i have a pair of tangband w8-740p's, single 4ohm 150wrms 8's. im thinking about building a box 1.75cu tuned to 39hz with 26.25sq of port , trying to get the most output possible. not sure how to design the box was thinking about trying a loaded horn thing like thumpper did with the icons. anyone with exsperience with these speakers or small truck boxes any imput of how i can get the most out of these 8's would be great. vehicle is 99 dakota x-cab.

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    • 6 replies
    • 935 views

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