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View Full Version : Another BTL build 4.2 cu ft @ 33hz - 62 sq in port



GrnEydDvl
11-12-2006, 01:14 AM
Got the wood cut today but no pics yet. Here is a SketchUp.

External Dimensions: 37 wide x 17 x 19.25. Going in the back seat area of my F-150. Taking up 60% of the width of the back seat.

http://static.flickr.com/116/295056867_0cadc7bea3_o.jpg

Sub and port firing up. Sub on driver's side. Front overhang is to make the box sit level as the rear of the box will sit on the iron feet of the seat frame. Bolting the rear of the box to these feet.

The part of the rear seat where the box is going will be folded up. One part is higher on the front overhang to accommodate the hump in the middle of the floor.

springy101
11-12-2006, 01:20 AM
whats the stuff on the back of the box, an amprack or something?

Anonymous User
11-12-2006, 01:26 AM
whats the stuff on the back of the box, an amprack or something?

i think its for the box to sit level.

GrnEydDvl
11-12-2006, 01:30 AM
whats the stuff on the back of the box, an amprack or something?

I added some to my original post right as you were posting that explained some of it.

It is actually the lower part of the front. I just have the box flipped around so you can see the more interesting bits.

The kx2500.1 will sit under the box behind that front overhang.

GrnEydDvl
11-13-2006, 02:00 AM
Got to buildin' today. No screws. Just glue.

http://static.flickr.com/120/296153409_103da2a79c_o.jpg

http://static.flickr.com/109/296153412_b3b6ce8ad3_o.jpg

http://static.flickr.com/114/296153415_5849b42e26_o.jpg

http://static.flickr.com/121/296153418_c95f84ff82_o.jpg

That leaves me the support pieces for the overhang and the dowels inside for tomorrow.
Now I just need to order the sub :laugh:

ngsm13
11-13-2006, 02:05 AM
****.

nG

baseballer1100
11-13-2006, 02:12 AM
Not bad.

xluben
11-13-2006, 02:31 AM
why the overlap of the top and bottom on the front of the box?

looks very good, though. can't wait to see it installed :)

ngsm13
11-13-2006, 02:39 AM
For future reference, it's better to have the subwoofer near the port with a slot port. :fyi:

nG

grassroots
11-13-2006, 02:45 AM
^
i asked about sub placement in a thread not too long ago and everyone told me it doesn't matter where it goes on the baffle....

ngsm13
11-13-2006, 02:49 AM
^
i asked about sub placement in a thread not too long ago and everyone told me it doesn't matter where it goes on the baffle....

It's not going to make night and day difference. But if positioned on the opposite end that is now... it'll give the air no choice other than exitting out the port. How it is now... it's a little different.

nG

Goldtaz1
11-13-2006, 11:29 AM
It's not going to make night and day difference. But if positioned on the opposite end that is now... it'll give the air no choice other than exitting out the port. How it is now... it's a little different.

nG

2 points for teaching me something I didn't know. Thanks nG.

Pop da Hatch
11-13-2006, 12:28 PM
2 points for teaching me something I didn't know. Thanks nG.

noobx:crying: :greedy:

saywhat?
11-13-2006, 12:34 PM
looks good man. lot better than the other lol. should wang.

GrnEydDvl
11-13-2006, 01:34 PM
why the overlap of the top and bottom on the front of the box?

looks very good, though. can't wait to see it installed :)

I think the piece of wood that is the right side of the box in the bottom pic was 1/8th of an inch too short. I found this out after it was already glued and clamped. So, I just made the front face recessed a little bit. Actually looks sorta cool.

GrnEydDvl
11-13-2006, 01:45 PM
looks good man. lot better than the other lol. should wang.

Shh.

Yeh. I am getting better. My box building Jedi training is nearly complete. I picked up 2 new clamps and then 2 90 degree clamps - one large, one small. They help a lot.

saywhat?
11-13-2006, 01:49 PM
i like it recessed.

Goldtaz1
11-13-2006, 02:01 PM
noobx:crying: :greedy:

Not quite dude. Been doing this stuff for a number of years, just can't claim to know everything. I'm just glad there is still helpful information that can be found on this forum.

GrnEydDvl
11-19-2006, 05:03 PM
Mini-update. Got the edges rounded and all the support pieces added. Still waiting on the delivery of the sub. FI hasn't given me any indication when it will come.... :uhoh:

http://static.flickr.com/105/301216349_e2864b6727.jpg

http://static.flickr.com/120/301216350_4839dfd718.jpg

baseballer1100
11-19-2006, 05:08 PM
**** that is a **** bish...When did you order it?

danteBirosel
11-19-2006, 05:12 PM
It's not going to make night and day difference. But if positioned on the opposite end that is now... it'll give the air no choice other than exitting out the port. How it is now... it's a little different.

nG

I totally agree with Noah here. I had this same experience for one of my customers, and wow the windshield wipers moving, but you cannot feel the bass at all. It doesn't get to loud too because of how all the air is just going straight out of the port exit. So then i offered to redo and edit the enclosure. Placed a piece on top of the baffle, made a new hole, tested it. And wow such a big difference. This time the windshield wipers are moving with the feel of clean bass. So yes, it makes that much of a difference.


-Dante

GrnEydDvl
11-19-2006, 05:18 PM
**** that is a **** bish...When did you order it?

The 15th. I know it will take a while to build. I just asked when it should be done and no answer yet. FI has been great to deal with so far. I'm sure they will let me know soon.

baseballer1100
11-19-2006, 05:20 PM
Well you will get a email when they ship it out/enter shipping info.. it takes a day or two to make the sub and then they ship it out.

GrnEydDvl
11-19-2006, 05:32 PM
Well you will get a email when they ship it out/enter shipping info.. it takes a day or two to make the sub and then they ship it out.

Thanks for the info. I'm sure they started on Thursday since I ordered it late on the 15th. Hopefully it will ship on Monday. That would make me very happy.

vetkilr
11-19-2006, 07:28 PM
Sweet box bro...

Now the 2500.1 should wang.

baseballer1100
11-19-2006, 08:08 PM
Thanks for the info. I'm sure they started on Thursday since I ordered it late on the 15th. Hopefully it will ship on Monday. That would make me very happy.

I love getting stuff in the mail...

GrnEydDvl
11-21-2006, 11:36 PM
Got the box mostly fleckstoned.

http://static.flickr.com/118/303243698_d3ae0ff6eb_o.jpg

Still drying in that pic. It has since evened out a little more.

baseballer1100
11-21-2006, 11:37 PM
Thats sweet. Love the look.

Kenny Pollock
11-21-2006, 11:47 PM
Lookin' good bro!

Immacomputer
11-21-2006, 11:50 PM
Getting Fleckstone even is such a *****. I tried to make it really light like you have it but it turned against me as I kept trying to even it out. Yours looks pretty nice though. Good luck with the rest!

baseballer1100
11-21-2006, 11:50 PM
bedliner or fleckstone?

GrnEydDvl
11-21-2006, 11:58 PM
If you are asking me - it is fleckstone. I tried to find bedliner in a can but couldn't (didnt look very hard). Fleckstone was easy to find.

baseballer1100
11-22-2006, 12:00 AM
If you are asking me - it is fleckstone. I tried to find bedliner in a can but couldn't (didnt look very hard). Fleckstone was easy to find.

I was wondering what was better. but you answered my question :)

vetkilr
11-22-2006, 12:03 AM
Sweet lookin

Ford302Redneck
11-22-2006, 12:07 AM
If you are asking me - it is fleckstone. I tried to find bedliner in a can but couldn't (didnt look very hard). Fleckstone was easy to find.

Where can I find this stuff? and what is it exactly?

vetkilr
11-22-2006, 12:09 AM
Where can I find this stuff? and what is it exactly?

Its canned pure african bumpy love from the deep south.....................



Open with care:D

baseballer1100
11-22-2006, 12:09 AM
Where can I find this stuff? and what is it exactly?

Lowes home depot to name a few...

Ford302Redneck
11-22-2006, 12:11 AM
Lowes home depot to name a few...

link?

baseballer1100
11-22-2006, 12:12 AM
no go to the store.

Immacomputer
11-22-2006, 12:33 AM
Mine didn't turn out great when I used fleckstone and a clear coat:
http://i15.tinypic.com/42j135u.jpg

It didn't even out and that was standing about 6 feet away from it and less than a second long bust for about three sprays and it came out that thick. I didn't like it nor did I like how it never really cured. Even to this day I can rub on it decently hard and it comes off kind of gummy.

GrnEydDvl
11-22-2006, 12:33 AM
Actually I checked the can and it isnt "Fleckstone" brand it is Rustoleum's version.

I used two gray primer undercoats with 2 light stone coats - leaving gray showing thru for the first coat. Basically I just followed the directions on the can.

http://www.rustoleum.com/Product.asp?ddf=35&frm_product_id=16&SBL=1 I used the black granite. Got it at Home Depot in the spray paint section.

Ill get close up shots soon. It looks really good in person.

SHiZNiLTi
11-22-2006, 02:15 AM
Great work on the box!

Fleckstone is cool stuff, I started off spraying a light coat of it on my amp rack's piece of mdf and ended up sraying way to much trying to even it out. I cleared mine too as shown below. Im still pretty happy with it even though it wasn't the original look i was going for.

http://img296.imageshack.us/img296/5416/spraystonedo4.jpg

baseballer1100
11-22-2006, 12:40 PM
That amp box combo is beautiful.

GrnEydDvl
11-29-2006, 03:56 PM
Sub arrived and is now installed. Here be the pics of the final steps.

Pre port painting (dunno why I waited on that) test fit.
http://static.flickr.com/113/309697069_f13b149287_o.jpg

Port painted and drying. Good look at the stone finish.
http://static.flickr.com/119/309697072_95f9f39715_o.jpg

Yes, I know the sub has a gangster lean / twist.
http://static.flickr.com/112/309697073_c30bc2f4c5_o.jpg

http://static.flickr.com/115/309697075_f5c15610dd_o.jpg

It vibrates the living hell out of everything in the truck. Box does not seem to have a real pronounced peak. Every freq seems to be loud. Rear wall and roof go bwwwaaaaaantttttt when I crank it which never seemed to happen on the 13w7 box I last had in there. Probably because this box plays so much louder at higher freq.

bdawson72
11-29-2006, 04:06 PM
nice

HitManSE
11-29-2006, 04:19 PM
I think im misunderstanding something here... with a ported box, isnt the air NOT supposed to exit the port? or is the sub supposed to force the air out?

From what I recall its just supposed to be an air cushion, ofcourse its going to move but not a whole lot. Until you dip below tuning freq anyway. That sound right? lol or have I just forgotten?

The box looks sick btw.

denim
11-29-2006, 04:56 PM
looks very loud

squeak12
11-29-2006, 04:56 PM
Man that truck looks too nice to put a box like that in there..

GrnEydDvl
11-29-2006, 06:06 PM
I think im misunderstanding something here... with a ported box, isnt the air NOT supposed to exit the port? or is the sub supposed to force the air out?

From what I recall its just supposed to be an air cushion, ofcourse its going to move but not a whole lot. Until you dip below tuning freq anyway. That sound right? lol or have I just forgotten?


Air def exits the port, above and below tuning freq.



The box looks sick btw.

Thanks.

GrnEydDvl
11-29-2006, 06:10 PM
Man that truck looks too nice to put a box like that in there..

I wish it would have fit under the seat, but not much room there. So I went all out.

Maybe one day I will swap it for something stealth. For now I am happy with it the way it is.

ngsm13
11-29-2006, 06:14 PM
Flip the box 180 horizontal...

I bet you'll notice a slight gain in pressure on the drivers side.

nG

baseballer1100
11-29-2006, 06:16 PM
That box turned out very very nice. Looks great.

GrnEydDvl
11-29-2006, 06:38 PM
Flip the box 180 horizontal...

I bet you'll notice a slight gain in pressure on the drivers side.

nG

I can't. The front wall overhangs and it not level on the bottom in order to accommodate the hump on the floor.

I remembered our convo about this from a while back when I was designing this box. But the kid sits back there in that little seat and she loves to throw her bookbag on top of the sub box (there isn't much room in the back for her to put it elsewhere). So the port goes on her end since she cant F up a port like she can the sub.

GrnEydDvl
12-03-2006, 06:52 PM
Finally got the box secured and made a quick vid. First sub video I've ever made. So be gentle :)

On Alan Jackson I didn't really let it rip till the final note. Neighbors were around.

The last bit is kinda cool since you can see how the rear wall is flexing by watching the shadow move.

http://www.youtube.com/watch?v=mgZ_GRFmnXA

smd4life
12-03-2006, 06:54 PM
looks nice and loud..

coolahan
12-03-2006, 07:20 PM
i'd hit it.

PV Audio
12-03-2006, 07:35 PM
Looks ****** :)

PV Audio
12-03-2006, 07:40 PM
I think im misunderstanding something here... with a ported box, isnt the air NOT supposed to exit the port? or is the sub supposed to force the air out?

From what I recall its just supposed to be an air cushion, ofcourse its going to move but not a whole lot. Until you dip below tuning freq anyway. That sound right? lol or have I just forgotten?

The box looks sick btw.
Yes, the air exits the port. However, you should ideally want the box's airspace to help damp the speaker. If you fire the air directly into the port, you usually don't allow it to happen optimally. Having it in the "crook" of the port allows the sub to work better in whatever the Vb happens to be.

vetkilr
12-03-2006, 08:52 PM
Finally got the box secured and made a quick vid. First sub video I've ever made. So be gentle :)

On Alan Jackson I didn't really let it rip till the final note. Neighbors were around.

The last bit is kinda cool since you can see how the rear wall is flexing by watching the shadow move.

http://www.youtube.com/watch?v=mgZ_GRFmnXA

Sweet..........Getin my Massive DMX in the am and hookin it up to my Lanzar 4000D and it will be in a 4.0 tuned to 35ish with 80 squares of port.............Cant wait:D


Im so shur that the 2500.1 is happy with you now cause I talked to it and said to be patient one day it will wang:laugh:

GrnEydDvl
12-04-2006, 12:29 AM
Sweet..........Getin my Massive DMX in the am and hookin it up to my Lanzar 4000D and it will be in a 4.0 tuned to 35ish with 80 squares of port.............Cant wait:D



Pics and vids, por favor.



Im so shur that the 2500.1 is happy with you now cause I talked to it and said to be patient one day it will wang:laugh:

The wang is hangin. Low and hard. :laugh: I love the amp. Tons of power with minimal voltage drop (never under 12.8 so far). Stock electrical. One run of Kicker 1/0. Battery upgrade and Big 3 on the way tho :up2somet:

Too bad I can't find a place for a decent 2nd battery.

phyphoestilic
12-04-2006, 12:32 AM
Great box, good work :D

vetkilr
12-04-2006, 09:56 AM
Pics and vids, por favor.


Too bad I can't find a place for a decent 2nd battery.

Ill get pics and stuff..........:D

All I have for extra batt is the Biggest Marine Batt Walmart sells.........paid 60 out the door..........with 2 yr warr.:naughty:

bdawson72
12-04-2006, 10:09 AM
Nice vids....I'd like more also....And, get that bish metered

vetkilr
12-04-2006, 03:07 PM
http://i7.photobucket.com/albums/y293/vetkilr/massive152.jpg
http://i7.photobucket.com/albums/y293/vetkilr/massive15.jpg

GrnEydDvl
12-06-2006, 03:36 PM
Anyone near me with a TermLab who will let me meter my setup?

9512ds
12-06-2006, 03:39 PM
how close is dante?

GrnEydDvl
12-06-2006, 03:43 PM
Who is Dante? What city is he in?

GrnEydDvl
12-07-2006, 06:40 PM
Bump. Meter? Anyone? I have beer.

SAG3
12-17-2006, 08:42 PM
PM LivinLife.