ok good luck, but it's not gonna fit in a properly sized box unless you do sealed but there is seriously no point to sealing an 18 might as well do a ported 10 or 12, it will be louder than the single 18 sealed. 1 10 or 12 ported will be louder or just as loud as a single 18 sealed and you'll still have trunk space. my last car i had 2 12's sealed and my single ten is louder and lower and getting less power.

i don't know why your stuck on an 18, there is seriously no point. also a ten can play the same low notes that an 18 can play. size does not matter for how low a sub will play. the T/S parameters of the sub tell that.

 

lemme say that an 18" all you will get is WOW factor. A ported box for an 18" will not fit in the car unless you dont want to use the back seats. I am currently running a 15" in my car ported box. I took out the spare tire and all that junk just to make room for that sub. I had a 12" w/ported box in there before and it is just as loud as the 15". I went 15" because I want that WOW factor if you know what i mean. When I was running that 1 12" people was like what the hell you have in here 2 12"s? I was like no only 1 12. Granted I did 139db with that 12" and now 141db with the 15". I could get louder but the box is limiting, if i went with a 4.5cuft box it would prolly do 145s. This one guy i met he has the same sub as I do but in a larger box and did that 145. Our trunk is big but not that big to put that huge box in there. So with that 18" you want to do, yeah its cool but it will be in a sealed box.

 

thank you!! take it from us. we have experience on this.

 

So pretty much...you guys are saying I shouldnt get the 18" because I couldnt get it ported???

Well 2 12"s would cost me around $250...I found a nice 15" for $150...Or are all of you all against anything above a 12"

 

The 15 would actually take up less space...

the 15" Vented Box is about 2.5cF

while dual 12" Vented Box is about 3.0cF

 

yep it'll fit and i know people that have done it.

as far as 50 bucks you can do it but you'll have to make it yourself for sure

 

I'd do two 15"s vented if I could, but once again, it's not going to fit.

The two 12"s vented that everybody is suggesting HERE ON A SCION FORUM THAT IS CONSIDERING WHAT IS GOING TO FIT AND KNOWS JUST AS MUCH AS THE "AUDIO FORUM" CONSIDERING THAT A LARGE MAJORITY OF US HERE ARE ALSO THERE will do the job fine.

I personally am probably going to go with a 13AV.2 in a 2.2 c.ft. ported box.

 

If you are set on big sub to with a 15" then...ported it to 32-34hz 1500watts, you will be waking up the ghost from the past century. My box for the 15" is 3.5cuft after displacement of sub and port. In a whole it is about 4cuft.

So ROCK ON

 

I am willing to build a box even tho I have never built one before...How hard is it to make a box with a little WoW factor in it??? I should probably just take it safe on my first one huh...

 

what 15 only wants 2.5cf? most want between 3.5-5cf per sub.

if you didn't want our opinions why did you ask anyway. just curious.

 

I never asked for your opinions...I originaly asked about a box for an 18" sub...And people started giving me their opinions about what I should get...

 

Yep, and they also gave you incorrect info.

Not only can you build a box that will fit it, but you can actually fit a ported box for it in the tC, with the rear seatback still up. The people on that forum you linked to aren't any better than most of the peeps here, as I saw some of them making bogus statements too, like having to lose your spare to get enough space...BS!

It only needs 3.5' ported, and you have to account for the 18.4" OD and 9.7" depth of the 190v.2, along with how much air the sub and port will displace in the box.

An enclosure that 12" high built using .75" MDF will have an inside height of 10.5", so the sub will fit, and you can still have the hatch cover in place. There's over 40" of width available in the hatch, and a box that size would give you 38.5" of internal width. Considering the sub's outer diameter, if the outside of the box is made 20" deep, there will be 18.5" inside and there's more than 20" from the seats to the hatch rear so this will work.

Using those internal dimensions, we find that 10.5 x 38.5 x 18.5 = 7478", which is over 4.3 cubic feet. The sub is spec'd to displace just .1', so that leaves 4.2', and since only 3.5' is "ideal" (per ED), you have .7' inside for a large slot-port, which is more than adequate. You'll even have plenty of room to add a couple braces inside joining the top & bottom, which would be a good idea due to the box width and weight of the sub.

So all you need to do is contact ED and ask about the required port size for the 3.5' 190v.2 enclosure with their "ideal" response, then build the box. It shouldn't be too difficult building a fairly simply large rectangle like I described, you just need a sheet of .75" MDF, a box of 1-5/8" coarse-thread drywall screws, a bottle of Elmer's wood glue and a tube of silicone caulking. Good luck!

 

you're not going to be able to get 20" deep of an area and be able to keep it 40" wide all without taking out the spare. And if you even succeed that dimensions good luck trying to put it in the trunk. my puny "4.0cuft" box, i could barely squeeze it in the trunk.

Oh yeah I didn't know an 18" through ED only required 3.5cuft. Same amount of area needed for my puny 15" sub. Every 18" sub that I have came needed 5-10cuft of space.

 

Thank you nodsetse...Thats the kind of reply I was looking for...

Everyone seems to agree that Ported sounds so much better than Sealed...I really didnt know it made that much of a difference...

 

Ya, I was really surprised to see ED specified 3.5' as the "ideal" ported size, and I agree that most 18s need more space. JBL's pro-sound 18s do best in 10' ported.

As for the dimensions you stated concern about, he could go with just 38" total width (36.5" inside) and still have more than the required 3.5' internal volume.

A ported 18 (at least the 190v.2) doesn't appear to be an issue in the tC, provided a person doesn't mind losing all their hatch space, which doesn't appear to be a problem for the OP.

No prob, hope it helps.

As for ported versus sealed, it depends on so many things, each has it's own advantages and shortcomings compared to the other. I'm much more into sound quality than SPL, and if I just had to have that 18" sub, I'd probably put it in a 3.0' sealed & stuffed box, even though ED states 2.5' sealed is "ideal". Sealed would still go lower and louder than most anyone would want or need in a tC, but I'm sure ported will get you a few more dBs and give a bit better "flinch factor" when it 'hits'.

 

Im definitely not in it for the dBs...I know most people who get huge subs are in it for the dB's, but I really want some good SQ...I dont compete or anything so I could care less if I get a little more Power...

 

So confused have you made up your mind? You want SQ but you like a very big sub.... I know I wanted the db that's why I went with a 15", if I wanted sq i would have done an 8 or 10...

 

you're looking for the wrong size if your goal is sq. if your goal is pure sq look no bigger than a ten or 2 in a sealed box. an 18 especially ported will not give the best SQ.

 

Ok...Ill make a list...No matter what I said in the past...Here is what I want...

1. Above average SQ...Not top of the line, but good sound quality..

2. Like we mentioned earlier, WoW factor...I want something that will impress

3. Good LOW bass...

4. Average/Above Average dB's...

So I went through in my mind and compared an 18", 15", 12"

18"= Good low bass and good WoW factor...But not so great SQ

15"= Good low bass...good Wow factor...average SQ...

12"= average low bass...no WoW factor....good SQ...


Now that I sat down and actually looked at what was important to me...The 15" looks like the best fit...





ahhhhhhhhhh....I change my mind like changing my underwear...

 

a 8" sub will get just as a loud as a 15" sub and can retain good bass. You just have to re-evaluate what you reallllllllllly want. There's no such thing as this big one will give tons of DB compared to this small sub. This past weekend at a dbdrag there was a guy in street A, and put out 155db, but with 10,000watts anything can happen. With my 15" I have run street B.

The jump I did from that 12" to a 15" all I did was gain 2db, bass sounded the same. Except for the 15" all it did was shake my car even more! The roof vibrate up and down a good half an inch...

Dude if you want sq go with a 10" and put 1000watts to it and you can get loud at the same time.