Originally Posted by Habs4life
Originally Posted by Donoman
That is incorrect. You're halving the power to each driver while doubling the cone area, keeping SPL the same. More drivers gives more headroom, nothing more.
True, only if you connect the co located drivers in series instead of parallel.
halve the power (ie series connection)= -3db
double cone area =+3db
Hmmm, I don't think the two of you are saying the same thing. You are saying two drivers in series would consume half of the power (in total) of a single driver, but produce the same output as the single driver. That is correct. He is saying that EACH driver would receive half the power, keeping the TOTAL power the same, and doubling the cone area, netting no change in output. That is incorrect. If two drivers were wired in series, the total current
would be cut in half, assuming the voltage supplied by the amp remained the same. In series, each driver would see half the current, and half the voltage, so each driver would consume one quarter the power of the single driver setup, not half. So total power would be half, as you said, not the same.
Driver output is a product of the square of the area and the square of the velocity. Velocity is proportional to current, which is proportional to voltage (assuming the same driver). So it takes four times the power to double velocity. In this example, we've doubled the area, and halved the power with the same net output.