comparing cone area & loudness??

[AP Zoutes]

1st question same 15's?

2nd question same box?

3rd question was 750 the most the subs you were using could handle?

Also if your subs can handle twice the poer that meens you are moving them further in effect adding to the amount of mass movement which would equal an increase in cone area

Cone area is not just 10/12/15/18 etc it also needs to include movement

[AP Zoutes]

You can pick apart each individual reply I may make,but if you re-read what was posted it explains the different variables.

Quote "Doubling the power into the speaker motor may get us 3dB more sound to our ears, but again it may not!

Just like dumping twice the gasoline and twice the oxygen into our cars motor may not make us go twice as fast."

Defiantly not a law of physics! Definitely not always true.

It is true that the cone vibrates the air to make sound,  and if we had double the cone area ALSO vibrating the air making the same sound then we might have 3dB more sound!

But we did more here than to simply change cone area!

We added cone area that was already playing the same sound!

Edit to mention if your excursion goes from one inch to two inches you are in effect increasing your cone area

[AP Zoutes]

But I want to pull away from going back and forth. IF you notice the post directly after mine I make my actual advice. The post before was a quote from another site that had IMO good info when it comes to making a decision on subwoofer purchasing.

[David]

1st question same 15's?

2nd question same box?

3rd question was 750 the most the subs you were using could handle?

Also if your subs can handle twice the poer that meens you are moving them further in effect adding to the amount of mass movement which would equal an increase in cone area

Cone area is not just 10/12/15/18 etc it also needs to include movement

I tell ya what, after I get my my box put back together, I will do a test

2 15's on 1 bd1501=??

then I will double the power

2 15's on 2 bd1501's=??

same box, same subz nothing will change except ampilifier power.

Now, I maybee wrong but cone area has nothing to do with movement.

from what I remember from my learnings cone area is the measurement of the cone.

which is Circle Area Formula= π*r2 where r is the radius

if you want to get real technical

The volume of cylinder and disc is given by the conventional formula

Vcyl = π * r² * h    (where r is the radius and h is height), and

Vdisc = π * r² * h

Im not saying that there isnt some truth in that post.

but if were gonna post some info it might as well be as close to the truth as possible IMHO it is not, its all theories people can prove theories right and wrong all day.

[AP Zoutes]

Well, I'm always learning. The explanation I've heard is if you look at the sub as a whole mechanical object and are creating pressure the more you can move the sub the higher your spl. I believe the prhase was mechanical cone area, I don't remember the exact phrase but do you see where I'm going with this. If you double the power and effectively double your cone excursion your spl will go up unless you have reached the mechanical limitations of the sub.

[Ray]

Depending on cone displacment, and fs of the enclosure.