altoncustomtech

If you can go another half inch on depth to 19" then you can get 28"W x 14" H x 19"D, 2.2cuft NET with the same port and tuning.

I have one already drawn up and ready to go that would do very well for the DCON. 30"w x 14"h x 18.5"d in size, comes to 2.2cuft NET with 37.5sqin tuned to just under 32hz. If that fits I can post up a drawing and cut sheet real fast since it's already done.

Cut, but not assembled, correct? If so, you could cut another half an inch off the front, slide the first port wall out flush with the front (which would make a final 2" wide opening), as for the port you need the first wall cut to 11", then the remaining 16+ inches would make the second port wall. You'll have that 1.87cuft NET enclosure tuned to right around 32hz with the boards you've already cut.

If you've already cut the panels for the DCON enclosure, which ones do you have? Or in other words, did you cut the front & back, both sides and the top & bottom all to those same dimensions (essentially creating a sealed box)? If you did, then buying an aeroport would make the most sense at this point. All you'd have to do is cut the hole for the sub and the port and you'd be set. If not, and you've got the front cut short for the slot port, then you need to post up the dimensions of all the panels you have cut already so we can help you get figured out what you can do with what you already have. This would make perfect sense of why you've been so stuck to these dimensions.

The problem with an opinion is just that, it's an opinion. What sounds fantastic to me could sound like absolute crap to you. You're right though, there's so damn many brands and models out there in your price range it's hard to even know where to begin to look and be any kind of objective about it. I was just looking at sets in this price range yesterday for someone local and found some great deals online on some Alpine Type R's and X's (if you're willing to spend another $20-$30), found some JBL Power series P660C's on EBAY for $125 shipped (I'm liking those at the moment), and the list goes on and on. Some sets sound great in some vehicles dropped in the stock locations with no sound deadening, baffles or anything, other's need some special installation work to get the best sound from them. I've found there's no one way to recommend anything anymore. There's simply too many variables to know what could work right out of the box. I've come to trust brands like Alpine, JBL, Image Dynamics (dunno about the new owners/management tho), Focal, and several others of the like to work fairly well in most applications without much issue. I pretty much have to buy and try everything at this point since there's no place to go and listen to the vast majority of what's available and even when you do listen to it 99% of the time its not installed anything like I'm going to install it so the listening experience and the opinion I gather from it are flawed from the start.

4" is the biggest size you could use and keep the tuning and dimensions you're wanting. Yes that's for the DCON, but with the aeroport the box volume can go all the way up to the full 2.25cuft and have a little room left over actually. Like I said in an earlier post, we'll get everything squared away on the DCON enclosure before working on the one for the Skar's. Here's a LINK to PartsExpress and they're listing for the 4" Aero. Food for thought, if space is going to be just as much an issue for the Skar's as it is for this DCON build, an Aeroport may be something to consider for them as well.

It would, if he's got one to use or is wanting to buy one, it would help solve the issue he's having with fitment for certain. OP, after running the numbers I can get 1.87cuft NET with 24.49 sqin of port area (12.25 x 2) tuned to 32.25hz inside your required dimensions. Not exactly optimal, but it's not choking it either.

Best I can tell is that it's not accounting for the two port walls that make up the port inside the enclosure. That seems to be where the math is taking me. From what I see, the Torres calc has not calculated it correctly and the tuning is going to be WAY off. If I multiply .75 (wood thickness) by 12.25 (port height) by 28 (calculated length of port, not physical) I get .143cuft, that's REALLY close to the .12 difference I'm seeing between the Torres calc and my calculations. If you could go 14.5" deep it would work with the 32.xx tuning...

Once I started actually working through the numbers it seems something is a bit off. One thing, for certain, is that you didn't include the sub displacement. That's not a real big deal though with the small amount of displacement of the DCON it will only raise it a little over 1hz. The other issue is that what I'm seeing calculated in the Torres calc and what I'm calculating aren't jiving. It's usually really close to my calculations, but for some reason or another this time something is a fair bit off. I'm calculating more port displacement volume than the Torres calc. Generally I find where I miss a number somewhere, or fat finger one, but I've ran it quite a few times and get the exact same result. I need someone else to help verify what I'm seeing because if my numbers are correct by the time sub displacement is factored in the tuning is all the way up to 42hz, not good. I'm seeing .6cuft displacement for the port, the Torres calc shows .48. That's for the same 28" calcualted length for the 32.27hz tuning. I did this same thing for Shogen recently and the numbers were pretty much dead on, so I'm not sure where it's going wrong at here. I'd be glad to help you with this right after we figure out what's going on with the DCON box.

If I were you I would just build it as is. Depending on where the enclosure is located and a few other factors it may not be noticeable. My sister's box doesn't have much more port area than the one you've made up and port noise isn't an issue with it. I personally would rather have the extra volume than the extra port area. As for the board cuts, I can draw you a sketch up model and cut sheet if you'd like.

Everything looks pretty decent. Are those the MAX dimensions you can use though? The one thing I see is that it could use a bit more port area and that will require the box to be a bit larger. Otherwise, if you can't spare the room it will work fine. The only issue could be port noise.

to the forum!

I'm still looking for the XCON one that is as good as the ZCON one in ur post there.

There's such a large number of choices out there, all I can do is recommend some that I've listened to personally and liked, but even that isn't really a good way to make a purchase decision. The two biggest problems with recommending speakers is that what sounds good to me may not sound good to you, and EVERY installation is different. Those differences affect the overall sound of the speakers and can affect how good they sound even to the same person from one vehicle/installation to the next. The best recommendation is to get out there and listen to as many sets as you can and try to understand what you like and don't like about what you hear. Try to learn how the installation affects the output and try to choose accordingly. Other than that any purchase will be a crap shoot. Buy and try. That, unfortunately, is how I've had to make the majority of my own purchases due to the fact I have a VERY limited selection to choose from to listen to and a limited understanding of the how, what and why it does or doesn't sound good, perform adequately, and whether or not it's a good choice or not. I've not been able to find a one stop, tell all source of information that explains in detailed layman's terms exactly what makes one speaker better over another for MY situation, or how the T/S specifications translate to how a speaker is good for one situation and not another. I've found information on those subjects, for certain, but understanding EXACTLY how to use that information is still beyond my scope of grasp at this time. I know just enough to make myself VERY dangerous.

Most Ford vehicles have 6x8 speaker openings. You'll have to make an adapter for whatever you decide to do. Yes, I do think that concentrating your time, money and effort on just the front speakers is a good idea. Having items match is okay, god knows I've done it before, but it's not necessary. If it's going to be a show car that lots of people are going to see, possibly even being judged at a show, it makes sense to do and possibly even need to happen. I for one would rather have the best equipment I can afford of whatever brands it took to complete my goals than settle for whatever a brand sells that matches another piece of their equipment that has no direct bearing on the performance for the sake of it matching.

to the forum!

Tell Gina I'm sorry for her loss. You all have my condolences and I wish you and your family all the best.

Be glad to, but I need a little info on your max dimensions, preferably the measurement on the two most important dimensions to you, such as height and width. As I mentioned before I had already designed a couple of regular slot port enclosures for my XCON before deciding on going with the PR's. The last one I decided on before the PR's was 1.75cuft NET tuned to 32hz with 42sqin of port area measuring 31"W x 15" D x 15.5" H with a 3" wide port, all measured and made up for the back of my Jimmy. If those measurements would work for you I can throw up the cut sheet and Sketchup drawing. EDIT: Here's a quick pic of the drawing of it. Of course the plexi was just my thing, but you get the idea.

OP, I'm glad to finally see someone who can do some thinking AND reasoning for themselves. It's aggravating as all hell when someone asks a question like this and won't listen to any of the answers at all. That being said, it's nice to see that you're not going to try to cram a pair of 15's in there if it's not optimal, refreshing actually. I do agree that the XCON's would be your better choice whether the 15's fit for not. I do want to ask, why the Crescendo speakers? As good as the XCON's sound I cannot imagine pairing them up with a bunch of pro audio speakers. Not that I have a great deal of experience with the use of pro audio equipment in car audio, but what experience I have had has shown me that without a great deal of pre-planning, careful driver selection and some good processing its really hard to get great sound from it. IMHO for all of what it would cost to do pro audio properly a person could invest in a very nice component set.

The problem with building is i do it all day and hate to do it after ha. I also can not carpet anything so i dont do it cause it slides around the trunk. What do you think on size. I have a 4" aero port and would like to see what the sub could do. Any chance you would be interested in building/carpeting it? He is nowhere near you buddy..... Just paint the enclosure with textured spray paint.... I've recently discovered that I really like bed liner for painting enclosures and such. I have had a bunch of crap riding around in the back of my Jimmy after completing the amp rack for weeks now. It had marks all over it from it all and every mark wiped/buffed right off. Just amazing stuff.

The settings on the subsonic and LPF are fine. 1.1cuft may be within spec for a sealed but it's definitely not within spec for the ported enclosures for this sub. It needs a larger enclosure and more port area wouldn't hurt either. As I mentioned, give a bit of info and I'd be glad to help you get a box designed up, with cutsheet. All you'd have to do is go cut it and assemble. Hell, I may even have one made up already for my XCON 10 before I decided to go with the PR's.

So is it a sealed enclosure or a ported enclosure? You state here the it's within specs for the sealed, and it would be, but in post #4 you say that it's "1.1^3 at 35" which leads us to believe it's a ported enclosure since you mention what seems to be a tuning spec. If it's a sealed enclosure then there's not much you're going to be able to do to get louder. If it's indeed a ported enclosure then it needs to be bigger, period. Subsonic should be adjusted to 3-5hz below the tuning frequency of a ported enclosure, again, if it's sealed this adjustment isn't really necessary. LPF should be adjusted to somewhere near what you have your highs HPF filter set to. The LPF and it's relationship to the HPF setting of your highs will mostly be what sounds best to you. Most people seem to end up around 80hz on both.

I doth agree on both points.

If he'll post up his max dimensions, sub/port orientation preferences, and tuning preference I'd be glad to run a few numbers and post up something to build by.

Happy Birthday!