Help with box build

[speakerdude123 10+ year member]

EDIT: Decided instead of starting a new thread to just add to this.

So my new question is I have gone away with the 10 inch type R and decided to go with the 12''. The box dimension are as followed in LxWxH 24x13.5x13.5. There is a port on the left side that is 1.25'' from the left side of the box and goes the height of the box (if that makes any sense).

Now on to my question, the sub woofer will be mounted on the 24x13.5 inch side, and im just wondering wear abouts I should make the center of the sub (ex. 16'' from left side and 6.75'' from bottom)?

:END OF EDIT

YOU CAN IGNORE EVERYTHING FROM HERE DOWN

Okay so I have decided to build my own ported box for a 10 inch type R that it will be sitting in it. My outer dimensions I have decided on (19Lx12Wx12H), which gives me a inner box volume of around 1 cubic foot after the port goes in (about 1.1 ft^3 b4 port).

So on too my question, I am having trouble cutting out a good 10 inch circle for the face that the sub will sit on. Anyone have some tricks or a poor-mans 10'' cut out they made. I tried doing it with a jigg saw attached to a 5'' radius, but the thing came out a little wavy and angled.

Also I'm still trying to decide on a port height and length and depth, anyone know how to figure this out, I have tried websites but you need to know the LxW to get the D, but and dont know how to get the LxW?

Thank You //content.invisioncic.com/y282845/emoticons/cool.gif.3bcaf8f141236c00f8044d07150e34f7.gif

P.S. If you think my box dimensions are whack let me know, I haven't cut anything yet.

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[Cruzer 10+ year member]

my dad started the hole with a big drill bit, then used a jigsaw to do the circle, turned out really nice. Maybe practice or take ur time, but hopefully someone can suggest something better

 

[bbobb123 10+ year member]

About how much leway do you get with the speakers, for example. If I make a hole that is 10.2 or 9.8 inches in diameter how much is that gonna affect how the sub fits in there? Is there a little bit of give or does it have to be EXACTLY 10 INCHES!......?

 

[R34P3R 10+ year member]

Never hurts to try and drop the sub in to see if the holes line up over the board...

 

[audioholic 5,000+ posts]

Jasper circle jig, and your dad's plunge router.

 

[bbobb123 10+ year member]

I donts gots no router ):

 

[audioholic 5,000+ posts]

Gets wun.

 

[speakerdude123 10+ year member]

Ill try out the jigsaw 1st

 

[Spooney 10+ year member]

Dude please tell me you don't plan to cut a 12 inch diameter hole for your 12 inch sub. Your subs cutout is gonna be roughly .75 to 1 inch less than the size of your sub(ex. 12 inch sub= 11.25-11.0 inch hole)

 

[bbobb123 10+ year member]

Dude please tell me you don't plan to cut a 12 inch diameter hole for your 12 inch sub. Your subs cutout is gonna be roughly .75 to 1 inch less than the size of your sub(ex. 12 inch sub= 11.25-11.0 inch hole)

Well I was actually gonna cut out a 15'' hole cuz some guy told me it would sound better. //content.invisioncic.com/y282845/emoticons/banghead.gif.8606515f668c74f6de0281deb475b6fd.gif

DOH! of course not, I have the spec sheet and know what the cutout diameter is, just dont know where the center shold be or if it matters.

My port extends around the back side so I was thinking that I should try and keep it as far from the port as possible?