does anyone know wher i can buy a ported box for 2 12" subs for around $200? or if the ones sold on subthump.com would fit in my third gen?

 

i can make ya one for 150 ...from raw MDF, through designing, carpeting, and into your car for 150 plus shipping

 

Keep in mind when looking at ported enclosures, that if the volume and port size isn't precisely what your subs require, it's going to sound like ***. With sealed boxes, there's a good "fudge factor" that allows you to get away with using them in an improperly sized box (to an extent), but with a ported enclosure, if it's not exactly right, it's going to sound bad.

When you're shopping for pre-fabbed ported boxes, you need to do some homework. First you need to find an enclosure that offers AT LEAST as much volume as your sub needs in a ported alignment. If it's got too much, you can fill it with something to take up the extra space. Second, you need to educate yourself on port tuning and find out what port diameter & length you need, and you need to make sure that the ported box offers a port the same diameter, and at least as long as necessary so that you can trim it to length.

Or you just cough up the extra money and let somebody who knows what he's doing build it for you.

 

interesting....150 cdn? seems pretty slim price for a vented box, properly designed/built/carpeted.

I know I can't do it for that

bmoney

 

agree 100%. but when the box is properly designed and executed, the results can be phenomenal. I've gotten partial to vented designs lately myself....

bmoney

 

150 US dollars....i design them on my spare time...build that in cabinet makign at school, get a good deal on materials....and i usually sand them real nice, and spray undercoating on them...but i do do an occasional carpet job...

 

I've become partial to ported enclosures lately too, especially for getting the most out of small subs. I just built a ported box for a pair of Tangband 8" subs to go into my girlfriend's car. They get deep and loud, and still sound very good... all from a pair of woofers that cost $30 each.

Here's cross-sectional picture of the enclosure. The beauty of this design is that I can change the port tuning frequency just by swapping out that top piece of wood.

 

even at 150 us dollars, it seems pretty inexpensive. i'm not knocking it (good deals are good deals!). we all can't stress enough that the design and layout of the box and its tuning makes all the difference in the results.

bmoney

 

in looking at the enclosure, I have to assume that a panel (prolly plexi to show the amp) goes overtop of the face? if so, this is a typical 4th order bandpass design, not a vented design. if a panel does not go over the front, then you have a very elaborate sealed enclosure either way, its not a vented box

bmoney

 

150 dollars tho is just your basic ported box..i jsut built one for 2 12's with a nice slot port tuned to 35 hertz for a couple of RF hx2's....i hope it sounds amazingly loud...i know i built a huge ported box, like 4 cubic feet for 1 12" RF hx2 and it sounded like he had 2 of them in there, and only had a 500 watt amp...its amazing how big of a difference a couple of pieces of wood can make...on the one i just built, i sprayed 4 layers of undercoating on it, and will prolly paint it also, depends if he wants carpet over the undercoating...but i'm only charging him 100 cause he's a buddy of mine...i should get into custom installs tho, then i can charge the big bucks..its kinda hard being 18 and still living at home tho..you don't get much respect either unless they hear one of the boxes i've built..

 

hey Jim, show everyone the rest of the pics from SIN...man i don't care if it's not a 3rd gen...that box kicks @ss

 

there's a lot of magic in box building. and to your point about respect - I started the same way you did. I was tinkering with car audio, sweeping the floors at the local shop when I was 16 years old. My interest grew, and I got a job there at 18 as an apprentice installer. By 20 years old I was MECP certified, working fulltime between university classes doing installs. I've gone on to another career now, but have maintained the hobby in the form of a lucrative small business.

You won't get ANY respect until your stuff gets out there and people have seen/heard it. Making it boom is one thing, but having a solid, quality installation that doesn't come back with problems is just as important. Doing one or two here and there won't do much. It takes years my friend.....

stick with it. do quality work. don't rush, and by all means don't push the boundaries of your skill. the last thing you want to do is "try" something on a customers car and have it not work out. do your "trying" on your own ride!!!

bmoney

 

I know what kind of box I built chief. It's a standard ported box that happens to have the subs inverted. You just happen to be looking at the inside of the box. The baskets of the subs are NOT in another chamber. I'll post the pics in a few minutes... I'm just about to get my computer swapped here at work.

 

Here are a couple pics of the enclosure/amp rack. It is a ported design that has the woofers inverted so that the basket is outside of the enclosure.



And the view from the back, which will eventually be fiberglassed:

 

i figured there had to be another panel that went overtop. interesting design! where does the port exit? I can't tell from the pic. Also, in this design, you have the effective "driven" surface firing into the back seats. how does this sound overall?

bmoney

 

Jim, is that the W8-740c? I got to hear a center channel (not mobile) with a tangband W5-753sa driver, WOW. Now I know why you're so impressed with TB. I was in the "how good can that low dollar stuff sound" mind set, no more....

 

Yeah, those are the 740s. I like them a lot. I think that I'm going to buy a few RE8s for my truck, and if I do, I'll get to do a good comparison between them. I would have bought more TBs for the truck, but now that they went up to $50, I can get the REs for the same price.

If it turns out that I can't fit the REs in the truck, I might go with 4 or 6 of the 6.5" tangbands.

 

If you look at the very first picture I posted, you will see where the port exits. It exits at the top of the enclosure. Having the "driven" surface firing into the seats hasn't been a problem. I hear no difference with the seats up or down, other than hearing a little port noise with the seats down.

 

I just picked up 2 RE8s from a group purchase on Fullsizeforums..$35 each shipped. I thought I saw you posing over there Jim. Anyway, let me know what you end up doing for your box design. I have a regular cab pickup and I am not sure how I am going to get enough room, or if I should go sealed or ported.

 

The TB 6.5s are some very nice drivers. i have a pair running in my car right now, very capable as a sub

 

Jim, that is a very creative box, excellent design and construction, major thumbs up!


adam