Here, the pendulum lines are vibrated from above (figure 16) using pumps made from modified woofers for strength and throw.
Regardless of public perception or their rivals' negative assessments, fierce hiphoppers like these are skilled woofers.
One such problem set as a task for a genetic program was to design a crossover filter for woofer and tweeter loudspeakers.
The tweeter was mounted near the middle, with ten woofer panels occupying the remaining area.
Without crossover points, the drivers would simply overheat and burn out, with exception of the woofer.
The rotary woofer displaces far more air than is possible using moving cones, which makes very-low-frequency reproduction possible.
If you refoam a woofer or a squawker it's very important to use the right ring-size.
Additionally, some loudspeakers use the woofer to handle middle frequencies, eliminating the mid-range driver.
