question

[brodeisel 10+ year member]

do you think you can fit 2 sa 8s in 1.86 cubes for box. If so it will prob be with an aero port can you have then do like a 45 or 90 degree bend since it is in a 86 firebird not alot of room to work with.

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[Team TH (Donny) 10+ year member]

Yes, you will be ok with 1.86 cu ft heck just have half the aero port in box half out to give for the back hatch. It really depends what you are going for? SQ/SPL both. You have an advantage with the hatch..

Here is what I built in my old firebird intended for looks at the time. Two 12's in a sealed box at .8 cu ft per chamber with ~600 Wrms. The SQ was great! Even hit a 138.8 db at 44 Hz.. You can be surprised, especially with aero ports.

 

[brodeisel 10+ year member]

he wants some spl but not to be ****** spl

 

[Team TH (Donny) 10+ year member]

So are you going for numbers in competition? Or just want it to be SQ while getting pretty loud?

 

[brodeisel 10+ year member]

he just wants dailey driver.

 

[Team TH (Donny) 10+ year member]

Then yes. You will be ok with the airspace and aero port idea.

 

[brodeisel 10+ year member]

how big of aero port do u think he wants for like 35hz tune

 

[Team TH (Donny) 10+ year member]

Do you know sub displacement on those?

 

[Team TH (Donny) 10+ year member]

Never mind.. I found it to be .14 cu ft each.

 

[Team TH (Donny) 10+ year member]

Ok, how big you want the diameter of the aero port? For a 2" diameter aero port I get 3.91" in length.

 

[brodeisel 10+ year member]

that woud be perfect

unless how big would a 3 inch diameter be

 

[Team TH (Donny) 10+ year member]

8.65 in length. By the way for these I didn't calculate considering any displacement of the ports so don't have it inside the box halfway or what not just flush with the internal side of the MDF sticking out.. Make sense?

 

[brodeisel 10+ year member]

yeah it does thnx for your help.

 

[Team TH (Donny) 10+ year member]

Not a problem. Just ask if you need help with anything else..