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billy18bm

3.0cuf @ 36hz

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are my calculations correct?

 

also, this box if for two type r 12's jw how this will work since the reccomended volume is 3.4cuft?... jw thanks..

boxer.jpg

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1) Net volume is AFTER port and sub displacement.

2) You have 20.375" of port length and you need 23.15" to get a tuning frequency of 36hz.

3) Port length extends 1/2 the port width from the end of the port if one side runs along the wall of the enclosure.

4) You can find the enclosure volume much easier than breaking the enclosure into sections manually.

 

6aqsh1j.png

 

From there, take the number they give and multiply that number by your height and then divide by 12. You can also see from the picture the actual port length (the solid line drawn down the center of the port).


I may make you feel but I can't make you think.

Your sperm's in the gutter -- your love's in the sink.

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so i did wat u said heres a pic

 

on the port i went out 1.5" from the middle of my port?

 

huh.jpg

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Those look like the same numbers I found. 3.01 cubic feet tuned to 38hz.


I may make you feel but I can't make you think.

Your sperm's in the gutter -- your love's in the sink.

goodgrammarbc7.gif

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That looks to be right about on 3.0 cubic feet tuned to 36hz.


I may make you feel but I can't make you think.

Your sperm's in the gutter -- your love's in the sink.

goodgrammarbc7.gif

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thanks man i appreciate all the help

 

this box is for two type r's...12"...they reccomend 1.7 cuft a piece or 3.4 for 2 but i dont have the space should this work well.. jw if you know

thanks again

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Well it should be pretty loud and pretty punchy but it will be heavily lacking in the 30hz range.


I may make you feel but I can't make you think.

Your sperm's in the gutter -- your love's in the sink.

goodgrammarbc7.gif

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Have you already bought the 12's? ...If not buy 10's and they will love that amount of space


Refs: BMXbikes, Wragold, Tommyk, ThumpinTitan, NewAgeKing, BushJ311, l7runner, jco1385, Big Joker, SPY, xxxbasshead

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yes right now i have them sealed at around .9cuft... sucks.....

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can u make the box bigger or are u limited?


_______________________

H/U: Panasonic

Amp: Hifonics BXi 1606D

Subs: 2x12" Clarion Pro Series

Components: Stock/In Progress

Component Amp: Sony 3/4

Battery: Stock

Encloser: 5ft cubed tuned to 32Hz

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thats not enough space. do one ported in there.


4x 12" HDC3's

1x Hifonics Maxximus (rated 10,000@1ohm)

2x Powermaster D3100

8x runs of 0 gauge

1x stock alt

 

155.2 dB legal (vehicle off and @50Hz) in a Ford exploder

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im sort of limited... how much space should i give them my original goal was 3.4cuft.. but i really cant do that w/o moding.... how much space do you guys reccomend.... and do u think i should tune differently..? maybe 30? jw i like the sound of a 30hz wave better than a 36 but idk if its becuase my car shakes more or wat??.. idk just need some advice thanks..

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No point in tuning it low in a small box.....I would do at least 4ft^3 at 30hz


Refs: BMXbikes, Wragold, Tommyk, ThumpinTitan, NewAgeKing, BushJ311, l7runner, jco1385, Big Joker, SPY, xxxbasshead

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36 will sound decent? w/ that amount of space 3.0 cuft.. right?

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