60 i tried fireing it into the cab...roof...and to the back doors the thing is like 300+ pounds lol my astro broke down, so the box was replaced with kids for a week,lol im ganna put the 19ov.2's in a slot port for now. i am working on getting my stereo shop opened again and need to have something that pounds that the kids can see the ed subs...i am a dealed of ed now...so i need to get ed's name out. ill play with the wo on a 12" plan and then see how it realy works and go from that point. hanks guys....robert...tl plains??? lol ???

[quote author=gexter  link=1160835651/30#32 date=1162740683]
Slide the baffle into the cc more.
Your cc looks too large, well the whole bloody thing looks too large.
[/quote]

Gex,
That was the first thing I was going to suggest until I saw the picture  :(
It looks like the baffle is positioned into the inner boards which means he would have to totally rebuild the box to do that. Of course, if he builds like I do, that would've been the case anyway, lol.

As for closing off the port, I think that it would help lower the frequency some which would help SPL in that size vehicle. He said it was tuned WAY too high.

Of course, Mad man EZ here is looking for some SPL from the gods so it might be that we have to go into some BIG, BIG enclosure designs to get what he is after.

Ask him about the 178 cubic foot tapped line enclosure I sent him!

I need a new job, my brain is turning into Hair fertilizer I think  :-/

Robert

In case I was not clear..
side it into the CC expanding the sealed area.. not the opposite. if you did that you would have your nasty "boom boom"

I wish I had hair to lose. I already lost it because of my job.

leave the existing mounting hole where it is and make a new mount leaving the old one where it is serving as a brace for the driver to breath through into the " sealed chamber" and firing into the smaller CC " chamber with the port"

Clear as mud?

PS  nice build and just plain massive expanding the cool factor.

[quote author=musgofasa  link=1160835651/30#36 date=1162777626]

Sometimes you need another perspective, [/quote]

ya when you get busy looking for answers sombody comes along and says something simple. Its only fun if your that person that comes along.

[quote author=musgofasa  link=1160835651/30#36 date=1162777626]

of course the speaker barely fits on the baffle at this widest point. Of course, if it were tilted a bit.......

Robert [/quote]

Exactly... saw big air do it in his over sized WO he said his wife was not at all pleased with the results and it was removed from the house..
I know none of you have ever had something like that happen to you, I myself would never build a subwoofer that is excessive ( well another one anyway)

I wonder if that db12 that JJ420 has not picked up will fit in my sons civic he bought this weekend.

well yes it will, with room to spare!

Now I wonder if my wife will let all that MDF into his car! where did I put that can of shellac?

cya

When I built my WO for 15's I scaled the box up by looking at the surface area of the woofers and then made the box that much taller.  That way the port lengths stayed the same.  If I remember right the whole box was still 36x36 (maybe slightly wider, I can't rember and I no longer have it).  The problem was with the baffles.  The angle was so steep that I had to notch the inside of the box to clear the flanges on the woofers. I also had to make sure I could remove the baffles.   I used some pretty small drivers too.  They were nothing like the ov19's that you used.  From what I discovered, it would be impossible to put 18's into a WO and still maintain a true scale to Steve's design.

forget those puny 18s.

http://www.audiojunkies.com/product_detail.php?cid=163&product_id=223

[quote author=60ndown  link=1160835651/30#40 date=1162843756]i still dont understand why we cant scale the wo by the ratio of surface area of the sub? if the ratio of surface area to horn dimensions ? is kept the same, surely it will perform the same......wonnit? [/quote]

Because it's horn.  Horns are tuned by the horn length.  It has to do with wave lengths.  If you make the entire box smaller, you will also make the horn shorter and the tuning higher.  If you make it bigger, you will make the horn longer and the tuning freq goes lower.  Probably too low.  Almost for sure so low that you would lose output.  I would imagine that because the WO is also a bandpass box, the horn length is even more critical to proper tuning.  That's the whole reason why I kept my 18" WO as close to Steve's design as possible and just made it taller/thicker.  Just remember, with horns length matters most.