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i need help building for a vehicle
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akadj View Drop Down
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Joined: 25 June 2015
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Points: 16 		Post Options Post Options   Thanks (0) Thanks(0)   Quote akadj Quote  Post ReplyReply Direct Link To This Post Topic: i need help building for a vehicle
    Posted: 25 June 2015 at 6:32pm
Hey guys,

I'm looking for some help in building an enclosure for my car. It doesn'thave much room ddimensions are 16×16×35.

It is just for pure SPL, I want to try it in a 60hz burst at a car show coming up and I thought that someone here would have a good design or idea on a horn or scoop that really peaks and blasts out the 60hz notes?

I seen a guy try it in an astrovan several years back with a pair of cerwin Vega stroker pro 18's.

I've got a wack load of woofers kicking around.. 3 pairs of 8's, 1 pair of 10's, 3 pairs of 12's, and 3 15's
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kr1sounds View Drop Down
Young Croc
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Joined: 28 June 2014
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Points: 920 		Post Options Post Options   Thanks (0) Thanks(0)   Quote kr1sounds Quote  Post ReplyReply Direct Link To This Post Posted: 25 June 2015 at 7:01pm
im guessing those dimensions are inches and what make are the drivers. cant just stick any driver into a program without knowing its parameters
I MAN SERVE SELASSIE CONTINUALLY... NO MATTER WHAT THE WEAK HEART SAY

fostonshfs.webs.com
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akadj View Drop Down
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Joined: 25 June 2015
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Points: 16 		Post Options Post Options   Thanks (0) Thanks(0)   Quote akadj Quote  Post ReplyReply Direct Link To This Post Posted: 25 June 2015 at 8:01pm
* Electro Mechanical Parameters
Name=    APX15D1.818.05302004

Note=    
Model=    TSL
Domain=    FreeAir
Shape=    Round
Profile=    Cone
Fmd=       3.0000 KA
Qmd=       1.0000
Flp=       8.0000 KA
Qlp=       2.0000
Znom=       2.0000    Ohm
Revc=       2.0000    Ohm
Sd=      89.0000E-3    M²
Mmd=     318.0000    g
Pmax=       3.0000E3    W
Rtvc=      83.3333E-3    °C/W
Xgap=      30.0000    M
Xcoil=      50.0000    M
Xmax=      10.0000    M
Krm=      20.4400E3    mOhm
Erm=     703.0000E-3
Kxm=     153.0000E-3    mH
Exm=     457.0000E-3
Rms=      13.5452    N·S/M
Mms=     333.2584    g
Cms=       9.3843    uM/N
Vas=      10.6170    Ltr
Fo=      89.9971    Hz
Qms=     13.9124
Qes=      0.7280
Qts=      0.6918
BL=      22.7536    T·M
Levc=       1.3252E-6    H
SPLo=      92.1008    dB
No=       1.0192    %
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akadj View Drop Down
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Joined: 25 June 2015
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Points: 16 		Post Options Post Options   Thanks (0) Thanks(0)   Quote akadj Quote  Post ReplyReply Direct Link To This Post Posted: 25 June 2015 at 8:03pm
Yes my dimensions are in inches
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akadj View Drop Down
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Points: 16 		Post Options Post Options   Thanks (0) Thanks(0)   Quote akadj Quote  Post ReplyReply Direct Link To This Post Posted: 25 June 2015 at 8:45pm
Another set of dimensions are 14" ×17" ×42"

Either of those two will work. Changes a little depending where the enclosure will sit.

I'm not sure how big a horn or scoop is for a single 15" or single 12".. Hoping I have enough room
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all bass View Drop Down
Old Croc
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Joined: 11 October 2012
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Points: 1845 		Post Options Post Options   Thanks (0) Thanks(0)   Quote all bass Quote  Post ReplyReply Direct Link To This Post Posted: 26 June 2015 at 9:22am
Bill Fitzmaurice does a horn for an 8" driver called the Auto Tuba. Should bring a lot more SPL than a reflex box.

Never heared it though.
https://www.instagram.com/my_modular_journey/
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akadj View Drop Down
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Points: 16 		Post Options Post Options   Thanks (0) Thanks(0)   Quote akadj Quote  Post ReplyReply Direct Link To This Post Posted: 26 June 2015 at 3:35pm
Where would I find the plans for this auto tuba?
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Joined: 13 November 2012
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Points: 1234 		Post Options Post Options   Thanks (0) Thanks(0)   Quote APW Quote  Post ReplyReply Direct Link To This Post Posted: 26 June 2015 at 6:39pm
Originally posted by akadj akadj wrote:

Where would I find the plans for this auto tuba?


http://www.billfitzmaurice.com/AutoTruckTuba.html
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_djk_ View Drop Down
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Points: 5992 		Post Options Post Options   Thanks (0) Thanks(0)   Quote _djk_ Quote  Post ReplyReply Direct Link To This Post Posted: 26 June 2015 at 9:58pm
The correct frequency for SPL is the resonant frequency of the car interior, it will be much higher than 60hz.
 
Build your system for sound quality, then use (switchable) EQ at the resonant frequency.
djk
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akadj View Drop Down
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Points: 16 		Post Options Post Options   Thanks (0) Thanks(0)   Quote akadj Quote  Post ReplyReply Direct Link To This Post Posted: 27 June 2015 at 5:53am
The highest frequency allowed is 60hz. So I might as well tune the enclosure to that frequency
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akadj View Drop Down
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Points: 16 		Post Options Post Options   Thanks (0) Thanks(0)   Quote akadj Quote  Post ReplyReply Direct Link To This Post Posted: 28 June 2015 at 4:38am
Dimensions in mm if it helps any..

1st box
710mm × 480mm × 330mm

2nd box
1060mm × 430 × 355mm

Again I'm looking for a box that basically has its peak around 60hz and I can use 8's 10's 12's or 15's.. I'll try anything just give me some prints and I'll build it!!
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Points: 1333 		Post Options Post Options   Thanks (0) Thanks(0)   Quote b grade Quote  Post ReplyReply Direct Link To This Post Posted: 28 June 2015 at 7:32am
I made a 10 inch band pass sub for my car tuned under 60hz. The box is only 2 cubic feet. You need to design those for your driver though. I don't fancy dropping in random drivers and hoping for the best. At the very least you need to sim a driver replacement to see if it will function. 

Seriously, if it is all about lower than 60 hz and it a competition, to me that screams bandpass sub. You can not make a bass horn in the small size. The band pass is not a surgical instrument. It is a blunt weapon. Effective though. Not too hard to build either.
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