2-10’s or 1-15

[fermata]

1. Moving air is the end goal. It's a fact that two tens will move more air than a single 15.

This is at least the second time this assertion has been made in this thread. How can this be true, when a 115 has more surface area than 2 10s?

A 10" speaker has an area of 78.5", so 2 x 10 = 157" of surface area. A 15" speaker has 176.7" of surface area, which is 19.7" more than 2 10s. Since 'moving air' is correlated to surface area, a 15 will move more air than 2 10s. Granted, it's not a huge difference, but the fact remains a 15 has more surface area than 2 10s.

 

[Fumble Fingers]

This is at least the second time this assertion has been made in this thread. How can this be true, when a 115 has more surface area than 2 10s?

A 10" speaker has an area of 78.5", so 2 x 10 = 157" of surface area. A 15" speaker has 176.7" of surface area, which is 19.7" more than 2 10s. Since 'moving air' is correlated to surface area, a 15 will move more air than 2 10s. Granted, it's not a huge difference, but the fact remains a 15 has more surface area than 2 10s.

You are correlating speaker surface area to "moving air". While logically it makes sense to do this, in reality factors such as coil throw and other physics come into play.

 

[fermata]

You are correlating speaker surface area to "moving air". While logically it makes sense to do this, in reality factors such as coil throw and other physics come into play.

But can that be generalized? Isn't that down to the specific speakers and cab design? Of course, there's also the fact that two identical speakers interact in positive ways a single speaker can't, which is a point for the 210. (I guess this all adds up to why it's impossible to make general statements about a specific speaker size--each cab is its own thing.)

 

[AstroSonic]

You are correlating speaker surface area to "moving air". While logically it makes sense to do this, in reality factors such as coil throw and other physics come into play.

It's correct if we add, that for a given excursion the 15 moves more air than two 10's. However, the difference is marginal. And, yes, many other things come into play.

 

[ctmullins]

Displacement = Sd (cone surface area) x Xmax (cone throw).

Acoustic output (“air moved”) in the lowest octaves is determined by the cabinet/driver(s) interaction, not the driver(s) alone.