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Box Design

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Topic review
   

Expand view Topic review: Box Design

by Audiophile » Wed Jun 29, 2005 11:27 pm

polyfil changes teh density of the air within the box to make teh sub think the box is bigger. you really dont need it in a 2 1/2 cu. ft. box...I managed to fit a 1.97 ft cu. ft. boxinto a ranger std cab. It puts the seat a bit...uncomfortably forward, but it's not so much that I couldn't adjust. Consider firing the sub towards the back of the cab--towards the bed. that's how mine sits :)

by smoker » Sat Jun 25, 2005 4:43 am

rubberized undercoating i have never used. it might be worthwile to coat it with fiberglass resin on the inside but as far as polyfill some might argue its worth but i think it just takes up space inside the box and does nothing one way or the other

by audiofreak12 » Fri Jun 24, 2005 6:51 pm

He had allready baught the subs for use in a suzuki sidekick but now has the truck. he isnt going to devide the box up he wants it open inside. I figured out how were going to build it with the calculator on http://www.bcae1.com so i think im finished. He wants to use polyfill, should he or is it a waste of time. A big SPL guy around here told him to spray the inside of his box with rubberized undercoating, is that a good idea? Also, is this box going to need braceing on the inside as far as support? I will be using 3/4" MDF, liquid nail and fiberglass on the inside of his box. Thanks

by smoker » Fri Jun 24, 2005 5:40 pm

well just to give you a rough idea if you built the box 8" at the bottom and 5 1/2" at the top and 60" across with a height of 14" you would have a total internal volume of 2.48....undivided if you seperate the chambers, for every .75" thick divider you add between the subs you will need to subtract .334 from the internal volume....not sure what those subs need but it sounds like a pair of 12's versus 3 10's might be a better bet if the depth works.....

by audiofreak12 » Fri Jun 24, 2005 2:11 pm

He is an extremly short feller and so he has about 8 inches at the bottom and about 5 1/2" at the top. He has 60" across the back of his cab if that helps.

by Darthness » Thu Jun 23, 2005 7:57 am

oh yeah, forgot he has a regular cab... whoops.

by smoker » Thu Jun 23, 2005 6:27 am

i have a 88 chevy standard cab with bench seat and really there aint much back there if you still want to be comfortable. but i was into the truck scene in the late 80's early 90's and one trick we used was to use a grill over the subs and what happened is that the seat back has enough give in it to allow the grill to push against the material and still allow the speaker to play.

by Darthness » Thu Jun 23, 2005 4:51 am

Basstronics wrote:Think Justin still does the plans for like $25 :)
urg, scratch what i said before.

programs like winisd might help you, i dont know... i think they're for more advanced users...

btw, have you considered firing the subs up instead of into the seat?

by Ryan from Ohio » Thu Jun 23, 2005 4:50 am

Think Justin still does the plans for like $25 :)

by MobileAudio219 » Wed Jun 22, 2005 7:01 pm

Have you took the maxium demensions yet? If you have post them up and I'm sure somebody can help you.

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