what is the tuning on this box

[tuckintaco93 10+ year member]

38w 14.5 t 16.5 d

the port or lack there of is 7.5 long ad 1 1/4" wide and 14.5 tall

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[RAM_Designs 5,000+ posts]

I assume those are internal dimensions that you gave?

 

[tuckintaco93 10+ year member]

yeah this was a box given to me and i wanted to use for my 18 till i can build a box for it

 

[RAM_Designs 5,000+ posts]

Looks like it's around 5ft^3 tuned in the 30hz area, but that port is insanely small. It probably won't even function properly once you get a ton of air moving through it with your 18" sub.

 

[Kangaroux 5,000+ posts]

im no expert by any means but 1 1/4" seems very narrow for something that's 15" tall.

EDIT: ram beat me.. lol

 

[tuckintaco93 10+ year member]

yeah i know ...this was a shop built box...most shops around here just build a box and make a hole the call a port ..no round corners anywhere

 

[tuckintaco93 10+ year member]

with trying to not change the box to much what could i do to the port to make it sound better ..widen the port a little ?

 

[bubbagumper6 5,000+ posts]

with trying to not change the box to much what could i do to the port to make it sound better ..widen the port a little ?

Plug it.

 

[Kangaroux 5,000+ posts]

Plug it.

this.

your box is 5 cubes. the amount of port area should be between 12-16x your NET box size. that being said, your port should be anywheres between 60 and 80 sq. inches. The current port you have now is 18 sq. inches.

 

[09civic 5,000+ posts]

what we are trying to say is...op, get a new box

 

[thevic24 5,000+ posts]

Iam getting 5.26 gross. 5.13 after port displacement.

That port for 5.13cuft tunes to about 30hz. (will chance a tad with the sub displacement)

(assuming these are internal measurements and the port wall is .75 thick.)

Here is the port/box calc that I use.

slot port caculator

 

[RAM_Designs 5,000+ posts]

Iam getting 5.26 gross. 5.13 after port displacement.
That port for 5.13cuft tunes to about 30hz. (will chance a tad with the sub displacement)

(assuming these are internal measurements and the port wall is .75 thick.)

Here is the port/box calc that I use.

slot port caculator

I just figured around 5ft^3 after sub displacement.

 

[Buck 5,000+ posts]

Danananana small port batman!!!

 

[RAM_Designs 5,000+ posts]

Danananana small port batman!!!

I bet it whistles. //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[Buck 5,000+ posts]

I bet it whistles. //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

I wonder if it could play the Andy Griffith Show theme song?