what will be louder?

what do you think would be louder, right now i have 8 12" old school earthquakes in a giant blow thru into my caprice. power by 2 clarion 1550's and it slams. Well i came across 10 10" kicker CVX's the new round squares and id like to put them in the same designed box powered by 2 MMATS 3000.1's. my question is would the 10 10's be significantly louder than my 10 year old earthquakes, or should i re think what i'm about to do. meaning go buy 8 new 12"s or throw my 10 10's in?? i also looked at the difference in HZ levels of the new cvx 10's and 12's the 10's drop to 24hz and the 12's drop to 20hz so will it really be a big difference in the depth of the bass?? and not to mention i already have 10 10's so should i just put them in or re think my idea?? Please respond im trying to get as much info and opinion i can before i tear my car apart!

so...what do you do, go on every forum and get about a hundred opinions just for the hell of it?  Just do it.  Nike had the right idea.

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Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.

not really smart guy, n what do you do just post your 5000 posts just to mess with people, dont you have anythings better to do? i don't wanna have to spend an extra 3 grand or so thats why, i already have the 10 10's but if it still isn't gonna hit as hard as my 8 12's i don't wanna waste my time so therefore this would be the best way to ask from others past experience i got a system that u wouldn't believe! and this is where i'm stuck at, so if u don't have one then keep to yourself

if you dont have an opinion that is, why post??

Because I can.  But I hear you, and good luck. 

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Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.

Yeah Steve! lilcubano stated he didn't want to waste HIS time to why are you?
You should know it is much easier specifying the volumes, materials & system involved to get the final dynamics than fitting the damned things.
Then you only need to fit them to confirm if the theory and other opinions were correct - just in case they happen to be louder.

So next time you have an opinion that isn't considered to be an opinion, keep it to yourself. Maybe then you too would only have a few posts.
As if posters are smart enough to define the scope of opinions sought, or that ripping apart a car takes more effort than what will be spent on replies and further clarification.

Steve - I hope you fully understand my opinion. (Everybody has a right to my opinion.)

Number 5,756 in your honor, oldspark! 

But I still don't know what will be louder....

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Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.

Old school or not, if the old 12's were operating properly, than actually hearing a louder sound from the 10's should be extremely difficult... A meter might tell you that the pressure is higher, but the difference might not equate to the time, energy and cash.

To make the change because you want something different and you have the money to burn, is a whole other story.

1 thing I can promise you! Your 10-10's in the trunk of a caprice, would easily be blown away by the 2-JLW13's in my bro's accord. He has a fully fiberglass insulated interior and the Zapco cube. He puts 4-15's in SUV's to shame. People dont realize the value of a properly acoustically designed interior of a vehicle. He spent $5k on a amp and 2 subs.... FOR A REASON!

I say these words as a means of understanding, in no way am I trying to ridicule or demean what your trying to do here... May I ask a favor in return? Can you tell me how your going to generate the power for your 10-10's? I know the amps your using... How?

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This is what I do for FUN!

There are WAY to many variables to even give you an educated guess here. We don't know the model number of the old subs or amps, the actual specs of the enclosure or the config, power up grades you have or intend to imply ect, ect.

Are you looking for louder to the ear?

Louder to the mic?

Are you wanting a one note wonder?

Are you wanting a low hitting shake the earth setup?

What kind of results are you seeing?

What is the result you are trying to achieve?

You have left WAY TOO many variables for ANYONE to even get close to a good answer. Even with the few questions i just pointed out. There are still MANY MANY variables to get though before anything close could even be assumed as the better way to go.

stevdart had the right idea truthfully. The only way to find out with the LIMITED info we have is for you to "just do it". Right now there is no telling if you would see better or worse results.

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agreed with the above post, not enough info to really tell you, but one thing in can tell you is your cone surface area diff.

the 8 12s are giving you 904ci of cone area
the 10 10s get you 785ci

so to really dumb this down, your 12s get you more surface area, and are hitting lower freq most likely, so turning my brain off for the most part and assuming the subs are comparable to each other, and assuming your powering them both comparably, my first thought would be the 12s.

on the other hand if this is for anything other than competition (and i hope this is for competition) then i would say your so far into the realm of "what the hell" that it shouldnt matter. and i also have to agree with ianarian, they make better subs for a reason, there is no reason anyone should need more than 2 subs (other than maybe for show or competition). its like having $100 in your wallet but wanting it in all $1s, it looks like more, but its still only $100

Dude, just get some more 12's! Why would you want redo it all when you can get louder by doing a few, simple things?
Get some that perform well in small, sealed boxes (I assume your boxes are sealed..?).
Stuff the boxes with polyfil.
Be done with it, unless you want to give them some more power... :)

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2013 Kia Rio -90a alternator
DDX470HD GTO14001 GTO1014D (x3)
Big3 in 1/0G
1/0G to GTO14001

Now, if you want to do something completely different you could try 4 18's in a big ported box or something.

Either way, if you want to get significantly louder, you're going to have to model something up in WinISD at least...

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2013 Kia Rio -90a alternator
DDX470HD GTO14001 GTO1014D (x3)
Big3 in 1/0G
1/0G to GTO14001

Lanarian first off i had two 12 L7s that on 1! jl 1000.1 in a ported box and that was every bit comparable to my friends 2 jl 13's on a matts 3500.05 and sorry to say i don't care how you have 2 13's set up it will not even come close to 8 12's i don't care if they are k-mart 12's with wal-mart amps!! ive already blown my windshield practically out of the car. this car has a total of 64 speakers 8 12's and the rest mids highs and drivers!! now running off 9 amps soon to be 12! Ne ways its a walled off tunnel if you can imagine 3 inches in the roof from the top of the rear glass straight down, Dual 250 amp alternator set up, 5 batteries 8 12 earthquakes the one with the red center basically a red dust cap that says earthquake with a black surround running off 2 clarion 1550 - 2 ohm stable amps. Its a MUST for me to re do my box due to it getting wet and swollen. so i don't know if i should buy 8 12's and sell my 10 10's since i have to re-do my box anyway i thought 10 10's would be cool i heard my boys truck with 8 ten inch CVX's and it was naaaaaasty so i don't know what the hell to do?????? i just want it to be louder than it is and i know the 10 10's will crush the 8 12's i have now but say 8 new cvx 12's running 2 matts 3500.05's or 10 10's running off 2 matts 3000.1's?????

Well see there we go. You are talking (8) 12s vs. (10) 10s of the same sub now and more power to the 12s as well. Not the old subs and amps that we know nothing about. With the increased cone area of the (8) 12s over the (10) 10s, even if under the same power you would see an increase in DB's in favor of the 12s. Not a real hear-able difference, but there would be one. Since you would also be increasing power for the 12s it would be louder for sure, but that is IF comparing apple to apple in optimal enclosures. This now comes down to enclosure volume and placement. If you have enough space available for the 12s I would go that route. Remember too that kicker subs love airspace. It is ALWAYS better to have say (2) 10s in an optimal enclosure over (2) 12s in an enclosure that is too small. Then the (2) 10s would win.

Now you have a good theoretical answer. Its now time for you to do a little homework of your own on available space to work with and begin planning stages for what is going to work best. Not only for airspace, but in design for the sound wave path for tune as well as the design for less chance of cancellation. Then we will have an even better understanding of what would be better.

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lilcubano86- I am sorry to hear about your JL13 buddy. You obviously misunderstand a concept I am trying to convey. Your multiple speaker giddy-ups are destined for just show or say so. I am not a JL fan, but I have heard the best of em, and yet I have to sit here and say "Zapco cube, JLW13". Properly prepared interior! My single cerwin vega vmax12 in a custom ported box gets up to the same SPL as both my DAT D312's in a custom sealed box. Same amp, same vehicle.(different impedance's on amp, overpowering both set-ups)

NEWS FLASH!

You have not the room in your vehicle to optimize the SPL of that many subs. So now, your down to only looks...or to say you got that ma....wait! I already said this...

Brass tax- If you cant make 2-15's in your trunk satisfy your lust.... Let me say it another way, After you add more than 4 12's in your trunk, the enclosure size that you will be working with will begin to decrease each subs potential. At that point, 2-15's will get a higher, louder and lower overall sound experience in your ride.(all comparisons based on quality in reference to total $dollar$ value spent)

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This is what I do for FUN!

Surely you are not suggesting he'd be wasting his time?

I thought that was to be avoided.

t+36:15 (based on Zulu UCT+10; sync forthcoming stratum-2; 29/4 19:24Z)

Oh, heck no, I am only here to argue that brands and quantities are irrelevant. People think they have bass with a prefab box and type R's..... oohh ... that gets my goat!     

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This is what I do for FUN!

both setups have the potential to get louder than each other but 8 12's seems like the better option because, you can get closer to a good airspace for each one, you dont need as much amp, and you have slightly more cone area

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