Direct-radiator loudspeaker system analysis

The low-frequency performance of direct-radiator loudspeaker systems can be accarately specified and is quantitatively related to the basic parameters of the system components. These systems function at low frequencies as low-efficiency electroacoustic high-pass filters; the frequency-dependent behavior is described by rational polynomial functions whose coefficients contain basic component parameters. These basic parameters, which are simple to evaluate, determine the system low-frequency response, efficiency, and power ratings.