how much louder is 1 15" compared to 1 12"

[spmachina 10+ year member]

well my current setup is 2 12" infinity perfects with a jbl 1200.1

I'm looking to upgrade to something louder (that still has nice sq like my above setup)

I was thinking dual brahmas or idmax subs

but I was just wondering how loud would just 1 15" be, or even an 18"

because they take the same power as the 10 and 12", and get louder with the same amount of power

the cone area on a 18 is 254

the cone area on a 15 is 176

the cone area on a 12 is 113

so say that I just got 1 18 " brahama and like a 1500 rms amp to power it, could that get about as loud, or louder (I would think) than 2 12" subs

some subs I would be considering is

braham, 15 or 18,

DD 9515d

idmax 16"

I know some of those aren't out, but I can wait

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[ARC]

both 12's and 15's or even 18's will all be about the same level of loudness. But the bigger the sub, the deeper the bass. Very rarely will you find a 15 that will be over 3 db louder than a 12

 

[spmachina 10+ year member]

I wasn't saying over, I was saying about, and 3 db is a lot

 

[noahchilders]

In genral rule of thumb 1-15=2-12's and so on.....This is based on cone area.

Laymens term's

- "Bass" being low frequency it needs to move alot of air.

Bigger cone more air.

-A few things to note would be Actual Cone size and Stroke or Xmax. These two things can tell you how much air it can displace (or move).

-Bigger Woofer's require more air (Bigger Box)

-Most 15's like 1.5-3cuft and many 18's like 6 or more.

-What ever you do Good Luck