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View Full Version : Box Log - Three 1242D's,8.5cuft, 2000+Watts RMS



amartin_72
05-12-2006, 01:01 PM
I am currently building a box for my 3 Type-R Subs for my Ext Cab F250.
The box will two 44in^ports for a total of 88 square inches. The Net Size and tuning is 8.5^3 Ft and tuning is just about 36hz on these bad boys. The power comes through a run of 2/0 Wire with the big three done in the front of the truck in 2/0 also. Here is the crappy plan that Ive drawn up, I will post pics soon! Tonight or tomorrow sometime. Paitience!

knotslck
05-12-2006, 01:05 PM
should maybe tune in the low 30s.

amartin_72
05-12-2006, 01:32 PM
Its the lowest i could tune it with this plan, But i might at flares to the end of the MDF ports.

amartin_72
05-12-2006, 01:35 PM
http://img66.imageshack.us/img66/3440/plan7vh.jpg (http://imageshack.us)

amartin_72
05-12-2006, 01:36 PM
That is the amp in the plexi with a smoke effect from sparying the edges with silver paint, the plexi that is.

I will have actual box pics up soon! It needs some finish work, carpet, resin, And testing! What do you guys think? The amp is the PA 3000DB For now. LOud?

_DjScrew_
05-12-2006, 01:39 PM
not bad. people say that will take 1kwrms all day

amartin_72
05-12-2006, 04:05 PM
I should have real pics up soon any ideas on covering for this thing? Im thinking paint and then having a silver sharpie for signatrues of random people on the front (Friends and stuff haha!)

j3bus2k3
05-12-2006, 05:35 PM
There's a paint, I saw it at CES or SEMA one year but it was chalkboard...I've been wanting to do something with the chalkboard paint and your idea just revived it, lol. Its expensive though....very expensive but would definitly be unique and awesome.

Fast1one
05-13-2006, 01:05 PM
Try that spray on bedliner in the can....heard it looks pretty cool....matter of fact heres a pic....

http://www.icixsound.com/vb/icixnation/images/462_101.jpg

I think that one was sprayed with line-x bedliner...

amartin_72
06-10-2006, 11:58 PM
UPDATE
http://i37.photobucket.com/albums/e76/amartin_72/box5.jpg
http://i37.photobucket.com/albums/e76/amartin_72/box8.jpg

Well here is what i have so far. The small amp is an autotek and the other is a PA3000DB.

I was testing it with the one sub that i have right now and it was very interesting.
http://i37.photobucket.com/albums/e76/amartin_72/box6.jpg

I used a 2x12 and some foam and i tried putting it over the ports and holes in different combinations and sitting on it to seal it up halfway decent and WOW when i have all the box covered except for one port, its mediocre but if i slide the board down and expose the middle sub hole like this HOLY SH*T ITS EXTREMELY LOUD.
http://i37.photobucket.com/albums/e76/amartin_72/box2.jpg
I had it at very low volume and moving that board around can make it very quiet to rattilng stuff on the walls. i hve no idea how i would calculate the tuning for this but it is mch much louder. It almost makes mewant to get rid of this box and make a box with 6" aeros so i can play with the tuning because it makes a HUGE difference. When i slide the board more to the end and expose the other port it quiets down again. This is in my garage not in truck but my plan now is to just get 1 more woofer because i think it will be louder than sticking 3 in there.

http://i37.photobucket.com/albums/e76/amartin_72/BOx1.jpg

amartin_72
06-11-2006, 12:03 AM
I know it looks like crap but im too lazy/broke to buy more sandpaper and paint so i just said screw it. I also dont have a table saw or anything but a drill,jigsaw and *tiny* cordless circular saw. I didnt even bother covering the back or bottom totally with paint since it wont be visible.

Im Looking for a used 1242d!!!!!Let me know what you have.

Worlddre
06-11-2006, 12:05 AM
why not just carpet it or vinyl or something

amartin_72
06-11-2006, 12:09 AM
Idk i might find some interesting covering in the fabric section at walmart but it will be hard to make it flush on the plexi window edges and im just sick of working on this box haha it might not look like it but ive spent hours sanding that thing with 60 grit and 150 and it still isnt smooth

Worlddre
06-11-2006, 12:14 AM
work your way up thru the grits until you get to 400 then prime and paint and you might end up with something alot smoother or you can keep going ....i was bored one day and sanded an enclosure from 60-1200 grit and it shined literally

arsonbob
06-11-2006, 02:12 AM
I think the difference in output of the one sub, was due to the other two sub cutouts being open. With three in there it will be plenty loud... and sealed up better, using only the two ports. Trust me... it will be much better once finished...

amartin_72
06-11-2006, 11:15 AM
Yeah I guess i will stick with 3 subs. Power handling with 2 in there is probably like 400 each.

amartin_72
06-11-2006, 11:55 PM
Well i found a piece of 12" PVC today that is 22 inches long and that would make the box come out to about 2.7ft each tuned to 35 if i cap off the other two ports at the bottom and put the PVC in the center cutout.but With 65in of port area each compared to 29 now.

So what would you guys reccomend:

3 subs, 2.6ft @ 37hz each, 700RMS Each, with 29^2 inches of square port each

OR

2 subs, 2.75ft@35hz each, 1000RMS Each, with 65^2 inches of port area each?

I really think the 2 might turn out to be louder.....My friend has two of the same subs so i might do some testing having 2 and 3 and trying it out.

BassAddictJ
06-13-2006, 10:11 AM
it's alive........

IT'S ALIVE!!!!!!!!!!!

psych0ticnemes1
06-13-2006, 04:14 PM
looks awesome... very nice

Lakota
06-13-2006, 11:53 PM
Tune them lower, trust me. They come alive tuned low.