Originally Posted by Corey Anderson

cone area = pi*r^2
cone displace = pi*r^2*xmax

Originally Posted by Sayar Kuchenski

Against popular belief cone area is NOT what matters, cone displacement is what matters. Displacement is the product of cone area and excursion. A sub with a cone area of 100^ in. 2 and an xmax of .25" will move the same amount of air as a sub with 25 in. ^2 of cone area and an xmax of 1".

Let’s do an example. Say you got yourself (16) 15" POS eBay special subs. Then say you got yourself 2 15" Eclipse Titanium subs (very high excursion subs).

Well most would think the (16) 15's would be louder because there is much more cone area and way more drivers. Well let’s find out how much air the subs actually move.

Let’s say these eBay special subs have a xmax of .25". Let’s say the Eclipse Titanium’s have a xmax of 2". Each sub has a cone area of 177In.^2.

(16) ebay subs: 2,832 in^2.
(2) Eclipse subs: 354 In.^2.

Now lets calculate how much volume the subs actually displace.

eBays subs: 2,832 In.^2 X .25" = 708 In^3.
Eclipse subs: 354 In.^2 X 2" = 708 In^3.

So the two Eclipses move the same amount of air as the 16 off brand subs. Intrusting hua?

Originally Posted by Hugh G. Rection

you people just dont understand. this comparison is more even than you all seem to realize. the 6 12's have more motor strength, wich helps make up for the displacement disadvantage. 4-15's have more cone area, wich helps make up for the mechanical disadvantage. not saying that they will be completely even in output, but they will be fairly similar.

Originally Posted by dmz2711

Originally Posted by Hugh G. Rection

yep, i dont remember the link though. ill search for it and post it if i find it.

Originally Posted by Ziggy

Isn't there a chart on another website where it shows cone area for 12's 15's and 18's?

Originally Posted by chefmyles

Wow you got pwnd son...

Originally Posted by Corey Anderson

thats diameter not cone area

area = pi*r^2

4-15's = 706.5"^2
6-12's = 678.24"^2

Originally Posted by singer

can u explain to me how 4 15's have more cone are than 6 12's?

In theory you gain 3 DB from a subwoofer that is just added cone area and sharing power (We will use this in theory, I know it's amped), while you gain 6 DB from a subwoofer when it is fully amped.

Lets figure out the cone area first
4 15" subs = 60" cone area
6 12" subs = 72" cone area

This question makes no sense, the 6 subs have more cone area, and they have more drivers... What kinda question is this?
Go with the 6 subs richman.

Originally Posted by singer

can u explain to me how 4 15's have more cone are than 6 12's?

In theory you gain 3 DB from a subwoofer that is just added cone area and sharing power (We will use this in theory, I know it's amped), while you gain 6 DB from a subwoofer when it is fully amped.

Lets figure out the cone area first
4 15" subs = 60" cone area
6 12" subs = 72" cone area

Originally Posted by profundus-sanus

i think the 12's would be louder because there are more of them

but honestly the cone disadvantage isn't that huge. and, depending on the sub, you could feed the 12's quite a bit more power. Probably plenty to overcome the cone area disadvantage and then some.

Originally Posted by Hugh G. Rection

the noobs will just say that the 6 will be louder just because its more subs.

Originally Posted by KICKERASSMAN

the 12'' may hit harder since there are more subs

Originally Posted by SoStl

can u explain to me how 4 15's have more cone are than 6 12's?

4x15= 60
6x12=72

Originally Posted by Hugh G. Rection

the 4-15's has more cone area, but the 6-12's has more motor. kinda balances itself out. but the noobs will just say that the 6 will be louder just because its more subs.