Sub box, porting specs and questions??????

[WVRam06 10+ year member]

Want to build box something like this, fiberglass with MDF top (stole picture from Google)

View attachment 26540003

View attachment 26540004

Two 8” Subs require .6 cf per

1.3 cf total area built

Square port 6.25 “ wide X 4.75” deep X .75” height = 22.26525 sq. in.

Specs on Carsterio.com call for min 4.72” port length with 22.27 sq. in of port space

11.5 mm Xmax @ 37 hertz

Question # 1: Is this site’s calcs accurate for this setup?

Question # 2: Looking at the right hand side of the box, will the narrow passage leading to the port act more like a slot port or will this illustrated setup work?

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[FamousMassacre 10+ year member]

@double 07

^ That guy right there is your best bet.

Good luck!

 

[WVRam06 10+ year member]

Thanks Famous. I have sealed boxes now but want ported. My space and what I want leads me to a square port. I will get with 07 if he will help. According to the sub spec I need 42.5" of port per sub ........this calc tells me 22.25" for both.......hmmmmm