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View Full Version : Tell me if I got this right please!!



husker77
07-01-2012, 09:00 AM
Please be gentle first time with sketchup, kinda fun. Here is the design I come up with for the box to put in my kid's s-10 housing a single eclipse 12" aluminum. Just looking for a good sounding musical box mostly. I tried tuning it to around 34hz, but I think the internal volume ended up a little smaller than I figured and the port is a little longer.

http://img824.imageshack.us/img824/7672/sbox2.jpg (http://imageshack.us/photo/my-images/824/sbox2.jpg/)

http://img818.imageshack.us/img818/6476/sboxp.jpg (http://imageshack.us/photo/my-images/818/sboxp.jpg/)



sub info

Fs 27 Hz
Qts 0.30
Vas 3.2 Cu Ft
SPL 89.4 db
VCoil Z 3.1 Re Ohm per coil
Power 500/1000 Watts
Qms 5
Qes 0.32
XMax 1.30" 1 way
Sd 511.0 Sq CM

husker77
07-01-2012, 04:05 PM
could someone at least tell me if I made any terrible mistakes, port width, sub or port placemet or anything. I am working on another design that hopefully will have a little more volume, so I would like to fix any other issues I got at the same time.

husker77
07-06-2012, 05:49 PM
Okay not getting much help, but will keep posting anyway. I think I am going to go with something simple...

18 x 52 x 14 with to flared 4" ports Precision Port 4" Flared Port Tube Kit 268-352 (http://www.parts-express.com/pe/showdetl.cfm?Partnumber=268-352), looks like if I make them 7" long it will be tuned about 34.

husker77
07-06-2012, 05:50 PM
Okay not getting much help, but will keep posting anyway. I think I am going to go with something simple...

18 x 52 x 14 with two Precision Port 4" Flared Port Tube Kit 268-352 (http://www.parts-express.com/pe/showdetl.cfm?Partnumber=268-352), looks like if I make them 7" long it will be tuned about 34.

husker77
07-08-2012, 11:51 AM
A little help here?!

It is for a s10 extended cab, I have 52" wide and 14" deep, the height can vary up to 18ish. I was thinking I needed about 4 cubes net.

Flex68
07-08-2012, 12:10 PM
Wow....out of all the experienced enclosure builders and in-the-know guys who can tell you how to build a perfect 46th order BP for any sub off the top of their head, nobody can even offer this guy a comment on his box/questions??

dats fukked up

Below20hzonly
07-08-2012, 12:14 PM
someone help this fellow

Flex68
07-08-2012, 12:25 PM
Wish I could offer some info/insight, OP, but .....

CAT MAN Buck TaylorFade RAM_Designs pro-rabbit Somebody

Fiendstolemyamp
07-08-2012, 12:26 PM
I was thinking I needed about 4 cubes net. Seems a bit large for a single 12. How did you come to this conclusion?

TaylorFade
07-08-2012, 12:37 PM
I can't see the pics, Do sub up, ports to the side.

4 cubes does seem big though.

mazdakid
07-08-2012, 12:44 PM
That should be pretty close to 4 cubes at 30 hz.
A little bigger than 4 and lower than 30.

husker77
07-08-2012, 02:07 PM
Wish I could offer some info/insight, OP, but .....

CAT MAN Buck TaylorFade RAM_Designs pro-rabbit Somebody

Thanks, I always feel guilty doing that. But man I need some help on this, want to get my kids new box built, it is kinda ghetto right now.


Seems a bit large for a single 12. How did you come to this conclusion?

winisd. Got a better recommendation?


I can't see the pics,

hmmmm?


Do sub up, ports to the side. 4 cubes does seem big though.

It is sub up, port up. It would be sub up, port forward, I worried about the port firing right into the seat. Like I said that is what winisd spit out, I thought it seemed a little big also, but I really am green in the enclosure designing part of this.


That should be pretty close to 4 cubes at 30 hz.
A little bigger than 4 and lower than 30.

Will it work okay for a daily?

Flex68
07-08-2012, 03:02 PM
Thanks, I always feel guilty doing that. But man I need some help on this, want to get my kids new box built, it is kinda ghetto right now.

np
Folks have prolly just missed seeing your post, as they usually offer up good suggestions for enclosure options.

(Not that I know anything , but the quick calculations I ran online indicates that the pics of your initial plan are well oversized at around 5.66cubes.
One of the calcs I used your T/S parameters in showed a single sub in a very basic rectangular ported enclosure at 1.2cubes and a 6" x 42" cylindrical port.)

Hopefully one of the guys will step in soon who knows whats what...

RAM_Designs
07-08-2012, 03:46 PM
First box is ~4.25ft^3 at ~28hz. Count on your power handling being cut in half if using a box that large.

husker77
07-08-2012, 03:59 PM
So how big should I go with? I thought it seemed awful big also.

CAT MAN
07-08-2012, 04:01 PM
So how big should I go with? I thought it seemed awful big also.

i would do no more than 3 cubes @ 30 and load the port off the passenger side sub forward on the passenger side.

---------- Post added at 03:01 PM ---------- Previous post was at 03:00 PM ----------


Wow....out of all the experienced enclosure builders and in-the-know guys who can tell you how to build a perfect 46th order BP for any sub off the top of their head, nobody can even offer this guy a comment on his box/questions??

dats fukked up

ive been busy building you feg.

RAM_Designs
07-08-2012, 04:06 PM
2.5-2.75ft^3 with a 30-32hz tuning should work well if you're firing the sub up/forward and firing the port towards the passenger side. Assuming you have enough power to bring the sub to it's xmax, I'd do a 12.5"x3" port to the side. Just cut the width down some so you have a good 4" between the box and passenger side panel. You'll be able to use a considerably smaller box than what you originally drew up.

husker77
07-08-2012, 04:07 PM
i would do no more than 3 cubes @ 30 and load the port off the passenger side sub forward on the passenger side.[COLOR="Silver"]




So port and sub forward on the passenger side? Right now we have about twice the power the sub is rated for available.

And in flex's defense I think he is more a pedophile than a feg, at least judging from his profile pic.

husker77
07-08-2012, 04:09 PM
2.5-2.75ft^3 with a 30-32hz tuning should work well if you're firing the sub up/forward and firing the port towards the passenger side. Assuming you have enough power to bring the sub to it's xmax, I'd do a 12.5"x3" port to the side. Just cut the width down some so you have a good 4" between the box and passenger side panel. You'll be able to use a considerably smaller box than what you originally drew up.

The only real problem with this is that the "side panel" is the side of the truck, just sheet metal. Should I make a mdf panel to fire the port into?

CAT MAN
07-08-2012, 04:11 PM
So port and sub forward on the passenger side? Right now we have about twice the power the sub is rated for available.

And in flex's defense I think he is more a pedophile than a feg, at least judging from his profile pic.

lol @ flex being pedo...

no sub on the drivers side facing forward. the sub loading off the passenger side facing the side panel of the truck.

CAT MAN
07-08-2012, 04:11 PM
So port and sub forward on the passenger side? Right now we have about twice the power the sub is rated for available.

And in flex's defense I think he is more a pedophile than a feg, at least judging from his profile pic.

lol @ flex being pedo...

no sub on the drivers side facing forward. the sub loading off the passenger side facing the side panel of the truck.

husker77
07-08-2012, 04:14 PM
lol @ flex being pedo...

no sub on the drivers side facing forward. the sub loading off the passenger side facing the side panel of the truck.

I believe you meant port loading off the passenger side? I figured that out after ram's post, I can be a little slow. I will draw up some new plans, probably tomorrow.

I appreciate all the help, I ran out of thanks so I am giving likes instead.:)

husker77
07-08-2012, 11:04 PM
Okay going by recommendations from you guys I've come up with a box that is 14" high, 48" wide, and 13.5" deep. I figure on a 12.5" x 3" port that is 33" long. Which yields 2.71 cubic feet and a tuning freq of 30.69, without sub displacement or any extra bracing. So when added it will raise the tuning freq a little but still be under the 32 hz.

I drew up this, the top is open in this view.

http://img546.imageshack.us/img546/1172/kalebporttopass.jpg (http://imageshack.us/photo/my-images/546/kalebporttopass.jpg/)

Should I put the port at the front or the back of the box or should I run it parallel to top/bottom instead of the sides? The way I have it the port is in the front, but then the sub is basically in the port, so that don't seem right. So what say yee men of higher knowledge than me? CAT MAN Buck TaylorFade RAM_Designs pro-rabbit

Also I should be about done bugging you guys on this one.

CAT MAN
07-08-2012, 11:17 PM
port on the back wall yes. looks good. maybe tro to get a hair more port in.

husker77
07-08-2012, 11:28 PM
port on the back wall yes.

So that would make that view the bottom of the box. So put the sub as far to the driver side facing forward as possible?


looks good. maybe tro to get a hair more port in.

Length, width or height?

CAT MAN
07-08-2012, 11:32 PM
So that would make that view the bottom of the box. So put the sub as far to the driver side facing forward as possible?



Length, width or height?more port area right now you are at 3 and some change for net volume depending on sub tuned at 29. you only have 12.10^2in of port area. can you make the box deeper?

husker77
07-08-2012, 11:35 PM
more port area right now you are at 3 and some change for net volume depending on sub tuned at 29. you only have 12.10^2in of port area. can you make the box deeper?

1/2" deeper is all I can really go, but I can go up to 4" taller.

CAT MAN
07-08-2012, 11:38 PM
1/2" deeper is all I can really go, but I can go up to 4" taller.
taller port wouldnt really help me here lol. im trying to keep your ratio down since you are tuning fairly low. just add .5 inches in width it will still be able to play the lows. but more efficient. if you could giv up more depth. i would do 12.5x4x35 on the port.

husker77
07-08-2012, 11:41 PM
taller port wouldnt really help me here lol. im trying to keep your ratio down since you are tuning fairly low. just add .5 inches in width it will still be able to play the lows. but more efficient. if you could giv up more depth. i would do 12.5x4x35 on the port.

I will measure tomorrow and see if I can squeeze in 14.5". Now that I think about it without the box going up so high there should be several inches to play with.

Flex68
07-09-2012, 04:49 AM
ive been busy building you feg.


And in flex's defense I think he is more a pedophile than a feg, at least judging from his profile pic.


lol, fukk youse guys.
I'm actually a serial killer of stray cats who also hates corn and football :suave:

husker77
07-09-2012, 05:38 PM
if you could giv up more depth. i would do 12.5x4x35 on the port.

I could do up to 16". So there is a ratio of port height to width that you want to stay within?


l hates corn and football :suave:

So yous is feg?

Flex68
07-09-2012, 06:34 PM
So yous is feg?


Hating football would = feg
I def misstated myself, and should have just said "Goooooo Sooners!"

husker77
07-09-2012, 06:46 PM
"Goooooo Sooners!"

Reported for gross use of profanity!

husker77
07-09-2012, 07:37 PM
I didn't want to do it, but come on CAT MAN don't leave me hangin.:greedy:

CAT MAN
07-09-2012, 07:39 PM
I didn't want to do it, but come on CAT MAN don't leave me hangin.:greedy:

sorry man ive got a few boxes here that ned completed before i go to work for the next couple days. the best way to contact m is a pm i dont go to threads often. just lmk when you posted somethign you need help with. i will check back in a few with the new deminsions

CAT MAN
07-09-2012, 07:42 PM
14x48x14 port is 12.5x4x35 will put you around 33 with 17^2in of port.