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View Full Version : Build log for CobaltKicker; 2.5 @ 35hz



Immacomputer
03-31-2007, 11:46 PM
This build is for CobaltKicker and it's for one 12" L7 going into a 2 door cobalt. I'm hoping to finish it tomorrow and get it all sanded down for him to paint.

On with the pictures:

The lovely assistant for tonight (Jenny):
http://i7.tinypic.com/4fzh1rk.jpg

http://i5.tinypic.com/2lctmyq.jpg

http://i9.tinypic.com/2ypm7h5.jpg

Snuck in picture of me at random:
http://i11.tinypic.com/4ic4b6h.jpg

http://i11.tinypic.com/2dtdcgn.jpg

Port going together:
http://i12.tinypic.com/2h87f5e.jpg

I'll be working on it tonight and hopefully getting all the way to the top baffle. I'll be adding a little bit of bracing from front to back and the rear panel will be double baffled for the amp mounting. More pics will come as I progress.

baseballer1100
04-01-2007, 12:05 AM
Whats the deal with the tape?

PV Audio
04-01-2007, 12:07 AM
LOL I had no idea that you looked like that. Kinda like a cross between George Lucas and Sascha Baron Cohen.

jeremiah
04-01-2007, 12:36 AM
hea what is the driver displacement of the 12" L7

smd4life
04-01-2007, 12:38 AM
LOL I had no idea that you looked like that. Kinda like a cross between George Lucas and Sascha Baron Cohen.

that was low man....

Immacomputer
04-01-2007, 12:43 AM
LOL I had no idea that you looked like that. Kinda like a cross between George Lucas and Sascha Baron Cohen.

Haha, yea I get that a lot actually. Not so much George Lucas but definitely Sascha. I also get the lead singer of System of a Down a lot, Serj Tankian ( http://www.aztagdaily.com/interviews/1204system300_popup_1.jpg ) , and I think he would look exactly like me if we had the same facial hair and haircut. My beard has a lot of red in it though... and some gray.


Whats the deal with the tape?

I wanted to see how well it would work to keep the glue away from the front of the wood for staining reasons. This enclosure will be primed and painted by Sean (CobaltKicker) and it won't really do much of anything for him. My last enclosure was stained and the wood glue ****ed up the stain surface. I sanded the glue residue away to nothing by the naked eye but it sealed up the wood well enough to reject the stain. It will also help in the sanding process to keep that nasty yellow look away.


hea what is the driver displacement of the 12" L7

I couldn't find it anywhere on Kicker's site nor was it in the manual so I just used .1 cubic feet. I'm sure it's close to that.

PV Audio
04-01-2007, 12:51 AM
that was low man....
It wasn't an insult :confused:

PV Audio
04-01-2007, 12:52 AM
Haha, yea I get that a lot actually. Not so much George Lucas but definitely Sascha. I also get the lead singer of System of a Down a lot, Serj Tankian ( http://www.aztagdaily.com/interviews/1204system300_popup_1.jpg ) , and I think he would look exactly like me if we had the same facial hair and haircut. My beard has a lot of red in it though... and some gray.

You've got the face of Sascha, but the beard is what made me think of Lucas.

Immacomputer
04-01-2007, 12:59 AM
I can see it.

The room is foggy in these pictures from the spray paint (yes I used protection) for the port.

More pictures:
http://i7.tinypic.com/4cm7msj.jpg

Port wall and angle painted:
http://i9.tinypic.com/2qd6asz.jpg

I think I'm going to work on the rear baffle a little and then call it a night. I won't get the rear on but it should be ready and drawn out for the morning. I need to make sure the cut for it is exact and that it fits without forcing the side panel off. All the cuts are perfect as **** and I'm not off by even a 1/32" anywhere. This means that the rear panel is randomly going to be off by like an 1/8"... I can feel the random waiting to strike.

docutech
04-01-2007, 01:10 AM
I couldn't find it anywhere on Kicker's site nor was it in the manual so I just used .1 cubic feet. I'm sure it's close to that.

Kicker site states that the displacement is 151 cu. inches.

According to my calculations:151 (cubic inches) = 0.0873842593 cubic feet

Taken from my build log...

http://www.caraudio.com/forum/showpost.php?p=1457419&postcount=52

baseballer1100
04-01-2007, 01:13 AM
Woot.

bdawson72
04-01-2007, 01:20 AM
wewt

jeremiah
04-01-2007, 01:36 AM
Kicker site states that the displacement is 151 cu. inches.

According to my calculations:151 (cubic inches) = 0.0873842593 cubic feet

Taken from my build log...

http://www.caraudio.com/forum/showpost.php?p=1457419&postcount=52

like this http://www.subwoofertools.com/forum/ported-box.asp?Ew=27&Eh=14&Dia=6&Xmax=15&Vd=0.0873842593&NumW=1&Vb=2.5&Fb=33&Qts=&Vas=&Fs=&CE=0

Immacomputer
04-01-2007, 02:11 AM
Kicker site states that the displacement is 151 cu. inches.

According to my calculations:151 (cubic inches) = 0.0873842593 cubic feet

Taken from my build log...

http://www.caraudio.com/forum/showpost.php?p=1457419&postcount=52

Where is this on Kicker's site? It sure isn't in the manual nor is it on the specs section for the L7. It's good info to know but it sure as hell isn't in the logical placement on the site. It won't change anything with my design though and actually allows for some bracing to have it fall right back into an exact 2.5 cubic feet.

60ndown
04-01-2007, 02:18 AM
nekked pics of the assistant or ban.

Immacomputer
04-01-2007, 11:38 AM
nekked pics of the assistant or ban.

Hmmm..

Update from this morning... I got the back baffle painted and it's gluing right now. I used a little too much glue and the **** was getting everywhere. I'll check on it in about an hour or so and then get the port side on. Once I do that, I'll get a little bracing from the front to back and then throw the top on. This thing is looking pretty solid and should sound great.

http://i5.tinypic.com/2a6ld9d.jpg
http://i14.tinypic.com/44vqjxj.jpg
http://i3.tinypic.com/4d2dp1x.jpg

blackbonnie
04-01-2007, 11:49 AM
lookin good, cant wait for it to be finished

docutech
04-01-2007, 12:03 PM
Where is this on Kicker's site? It sure isn't in the manual nor is it on the specs section for the L7. It's good info to know but it sure as hell isn't in the logical placement on the site. It won't change anything with my design though and actually allows for some bracing to have it fall right back into an exact 2.5 cubic feet.


Got to Kicker site then click support>technical support>t/s parameters>

http://i38.photobucket.com/albums/e134/p_j507/tsparameters.jpg

Immacomputer
04-01-2007, 12:12 PM
Got to Kicker site then click support>technical support>t/s parameters>

http://i38.photobucket.com/albums/e134/p_j507/tsparameters.jpg

Ah, ok. Thanks. That's really lame that they don't put that information in their owner's manuals or even on the sub spec list. Whatever. Thanks for the tip!

hempy
04-01-2007, 12:45 PM
How do you use those orange/black clamps so conservatively? I break one or two every time I build something.

Immacomputer
04-01-2007, 01:01 PM
You have to be gentle. They will clamp tight enough to give a really nice bond with the wood; you don't have to squeeze the **** out of them. With that being said, my helper, Jenny, broke one a couple weeks back. I like the other clamps much better but they were more expensive. I got the black ones for about $2.50 each on sale and now they're like $11 at Harbor Freight. The other ones I have were only $9 at HF and are much better.

The side is clamped right now and I'm currently making some front-back bracing.

Immacomputer
04-01-2007, 01:59 PM
Side panel on and bracing in.

http://i11.tinypic.com/2ce254i.jpg

http://i5.tinypic.com/2r23t6v.jpg

http://i14.tinypic.com/3yye06b.jpg

http://i10.tinypic.com/481u5jn.jpg

http://i3.tinypic.com/2d8kkn9.jpg

jeremiah
04-01-2007, 04:06 PM
Got to Kicker site then click support>technical support>t/s parameters>

http://i38.photobucket.com/albums/e134/p_j507/tsparameters.jpg

link I cant get it to work?:crying:

jeremiah
04-01-2007, 04:11 PM
that is the cu.in not cu.ft

Immacomputer
04-01-2007, 06:55 PM
Divide that number by 12^3 and you will have cubic feet.

I have the enclosure finished and I'll get pics after I eat.

Immacomputer
04-01-2007, 08:06 PM
Well it turned out really well. Just need to load it up into my car and deliver it!

http://i7.tinypic.com/3yfz3vr
http://i3.tinypic.com/49ix929.jpg
http://i11.tinypic.com/2eq3p06.jpg
http://i5.tinypic.com/4d29det.jpg
http://i13.tinypic.com/452j52o.jpg
http://i13.tinypic.com/4cbhicx.jpg

SeaKid
04-04-2007, 03:28 PM
Niiiice.

MTXman
04-04-2007, 04:31 PM
That looks really well done man, good job on the entire build - the way a box is supposed to be built.

jcbabb
04-04-2007, 07:39 PM
Looks great! For future reference, I've always used a couple of terry cloth rags to wipe up excess glue on stain jobs. One wet and one dry. The dry one to get the majority of the goo, then a wet one that will get the residue up as you scrub the joint with it. You can always wash the rags before the glue dries to re-use them.

PV Audio
04-04-2007, 07:46 PM
There is no excess paint when using spray cans...

mlstrass
04-05-2007, 02:09 PM
Looks great! For future reference, I've always used a couple of terry cloth rags to wipe up excess paint on stain jobs. One wet and one dry. The dry one to get the majority of the goo, then a wet one that will get the residue up as you scrub the joint with it. You can always wash the rags before the glue dries to re-use them.

x2 and a putty knife to scrape away the excess before wiping it clean....

Immacomputer
04-05-2007, 02:32 PM
The tape did a much better job than using damp and dry rags from my past experiences. It wasn't a hassle either so I'm to keep using tape from now on.

Thanks for all the positive comments!

jcbabb
04-05-2007, 09:44 PM
There is no excess paint when using spray cans...

I meant to type *glue* instead of *paint*.
Fixed it.