please check my math...please

[puckyou 10+ year member]

- 2.25 cu.ft. enclosure

- slot ported to 32 hz

- 2" port x 12.5" height x 25" length

- .75" mdf

- sub displacement .14 cu.ft

- measurements

top and bottom, 32 x 14

left and right sides 14 x 12.5

back 30.5 x 12.5

front baffle 28.5 x 12.5

port #1 12 x 9.75

port #2 12 x 11.25

many thanks!

Click to read more...

 

[CobraStang98 10+ year member]

Looks about right, it's a lil late so i might be a little off too lol

 

[dappa5 10+ year member]

- 2.25 cu.ft. enclosure- slot ported to 32 hz

- 2" port x 12.5" height x 25" length

- .75" mdf

- sub displacement .14 cu.ft

- measurements

top and bottom, 32 x 14

left and right sides 14 x 12.5

back 30.5 x 12.5

front baffle 28.5 x 12.5

port #1 12 x 9.75

port #2 12 x 11.25

many thanks!

don't those port dims need to be x12.5" not 12" you are going from top to bottom right? plus those ports do not equal 25" only 24.5" here look

gl w/ build

 

[Supergumby5000 5,000+ posts]

I'm getting 2.260cu ft @ 31 hz, close enough.

 

[dappa5 10+ year member]

gumby look back a few days this guy asked for help i drew him the wedge he wanted then he read the stickies and found that re calc and viola' her's designing his box btw heres one view of what idrew him

it's in x-ray so you can see the plexi window on the back and the false sides

 

[dappa5 10+ year member]

oh yeah i told him only $200 shipped cuz i'm bored oh well better this way he'll gain valuble experience

 

[Supergumby5000 5,000+ posts]

gumby look back a few days this guy asked for help i drew him the wedge he wanted then he read the stickies and found that re calc and viola' her's designing his box btw heres one view of what idrew him

it's in x-ray so you can see the plexi window on the back and the false sides

the RE calc is off.

 

[dappa5 10+ year member]

as always

 

[Supergumby5000 5,000+ posts]

as always

his design in the first post is very close, as i stated 2.26 @ 31 (actually like 31.3hz)

The wedge you have designed has the port very close to the wedge wall. I wouldnt fire a port into a downward curved wedge wall like that, unless you accounted that part of the wedge in the port calculation.

 

[Supergumby5000 5,000+ posts]

as always

oh yeah i told him only $200 shipped cuz i'm bored oh well better this way he'll gain valuble experience

Thats a lot //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

 

[dappa5 10+ year member]

your quote" including plexi(lexan) and carpet?

 

[dappa5 10+ year member]

his design in the first post is very close, as i stated 2.26 @ 31 (actually like 31.3hz)
The wedge you have designed has the port very close to the wedge wall. I wouldnt fire a port into a downward curved wedge wall like that, unless you accounted that part of the wedge in the port calculation.

did

 

[Supergumby5000 5,000+ posts]

your quote" including plexi(lexan) and carpet?

sheet of wood: $30 (cheaper then that here, actually, but for safe measure)

covering materials: $10

sheet of plexan that small: we'll say $15 tops

$50 to ship it

So your going to pocket $100 for about 2 hours TOPS of work.

 

[dappa5 10+ year member]

would have liked to port through the side dummy area one side port (pass) one side cut out like port but goes no where

 

[Scoobydoo 5,000+ posts]