How can i mesure how Fs changes with 2 drivers(same)??

[endrek]

Hi!
this thread is quick question. How can i verify, how much will the Fs from a driver change if i use 2 drivers(same) in standard configuration??

How can i mesure it? Doing the same as mesuring T/S parameters but with the two drivers in paralel? like this:
Set up diagram


But instead of one, the two drivers?

Thanks in advance

[NEO Dan]

Just wire the drivers in series or parallel.

Mounting them to a baffle at the same distanc as the final design would also be good.

Purely academic exercise IMO