Marshall or any box expert. please help

 

Silver Member
Username: Bump05

Hesperia, CA USA

Post Number: 208
Registered: Aug-06
hey i got a trunk space of 37x20x20 i should be able to get a 6 cube box back there for the 18 ill be buying its a re sx and i want it tuned to 35hz and the sub on top and port in the back so if you can build the box on subwoofer tools and does it matter if i just stick the sub on top instead of the front like it shows on subwoofer tools help me please last question on a box i just need this one
 

Gold Member
Username: Dustin3

Tigard, OR U.S.

Post Number: 4101
Registered: Oct-05
yea. im pretty sure you can just use subtools and then just measure out the circle cutout on the top, and cut it :-)
 

Gold Member
Username: Frkkevin

Resonant Engineering..., Fort Worth... Email

Post Number: 1577
Registered: Nov-05
i would not advise you firing subs up in a trunk unless you want to spend a lot of money on sound deadener.. that 18 firing up will make your car sound like its falling apart..


Box - 20.0x37.0x20.0
Vent - 18.5x4.0x28.0

Will be tuned to 35hz and have roughly 5.1cu.ft volume after displacement..
 

Gold Member
Username: Dustin3

Tigard, OR U.S.

Post Number: 4102
Registered: Oct-05
what kind of car? cuz in SUV's i think subs up, port back sound def the best
 

Silver Member
Username: Bump05

Hesperia, CA USA

Post Number: 215
Registered: Aug-06
its a hatch, roush focus so it owuldnt be in a trunk
 

Silver Member
Username: Bump05

Hesperia, CA USA

Post Number: 216
Registered: Aug-06
so when i go back with the port of the 28inches go back until 4" of the back wall and resume with the remainder inches going right?
 

Gold Member
Username: Extrmndor3

Life is GOOD, Ill Us

Post Number: 2493
Registered: Feb-06
u know wat man build your box at 7cb ft and tune your box at 30hz if u do wat are u thinkin of doin ull damage your ears and blow the fack out of your car
 

Silver Member
Username: Bump05

Hesperia, CA USA

Post Number: 217
Registered: Aug-06
ha yea, but i wanna see :-) lol...i emailed marshall, and he replied and he asked what kind of car i had, so i told him so just waiting on the reply on the box and stuff
 

Gold Member
Username: Southernrebel

Monroe, Louisiana DD 9515d~~]...

Post Number: 3754
Registered: Mar-04
here ya go...

5.9cuft (after sub and port displacments) tuned to 35hz
Upload

put a 37"x21" board on to of it and mount the sub.

box outside deminsions: 37"x21"x20"
 

Gold Member
Username: Southernrebel

Monroe, Louisiana DD 9515d~~]...

Post Number: 3755
Registered: Mar-04
port is 4.5" x 18.5".
 

Gold Member
Username: Tdeaton1021

Near Tampa, Florida USA

Post Number: 3200
Registered: Sep-04
before you build it make sure you can get it in there! lol. lots of people measure the interior of the trunk but they dont measure the trunk opening.
 

Silver Member
Username: Bump05

Hesperia, CA USA

Post Number: 222
Registered: Aug-06
hey do i need bracing on that box..im sure its a plus but what should i do?
 

Gold Member
Username: Tdeaton1021

Near Tampa, Florida USA

Post Number: 3208
Registered: Sep-04
marshall uses a threaded rod I believe. I'm not too savvy on braces. i know how to build them, thats easy, but with ported enclosures sometimes braces can add turbulance and such and hurt your SPL. But on the other hand, a well braced box increases your score. So I'm basically just bumping this for you so marshall can help lol.

Oh, and 2 forms of bracing that I know can help and are easy... 1) resin the inside of the box 2) use 1.5" MDF baffle
 

Silver Member
Username: Boomtank

Post Number: 113
Registered: Oct-06
Marshall what did u use to design that box pix. Subtools? where do u find that.
 

Gold Member
Username: Frkkevin

Resonant Engineering..., Fort Worth... Email

Post Number: 1599
Registered: Nov-05
that is google sketch up.. i think he uses win ISD unless he ever got a copy of bbp6.. which i can still send you marshall :-)
 

Silver Member
Username: J_baby15

Kentucky

Post Number: 766
Registered: Feb-06
Kevin, can u send me that program?
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