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Frequency range and frequency response. The frequency response specification of a speaker describes the range of frequencies or musical tones a speaker can reproduce, measured in hertz (Hz). The typical frequency range for a subwoofer is between 20–200 Hz.
Step responses of various high-pass filter functions, each with a −3 dB cut-off frequency equal to 50 Hz. The step response of a standard B4 vented-box low-frequency alignment is depicted in (a), while that of a standard B2 (Q = 0.7071) closed-box low-frequency alignment is depicted in (b).
Since the 1990s, a type of woofer which is designed for very low frequencies only, the subwoofer, has come to be commonly used in home theater systems and PA systems to augment the bass response; subwoofers usually handle the very lowest two or three octaves (i.e., from as low as 20 to 80 or 120 Hz).
Electrical characteristics of dynamic loudspeakers. The chief electrical characteristic of a dynamic loudspeaker 's driver is its electrical impedance as a function of frequency. It can be visualized by plotting it as a graph, called the impedance curve.
The NS-10 does not have a perfectly flat frequency response. The sound of the NS-10 is heavily boosted in the upper midrange, and like other sealed-box speakers of similar size its bass extension is limited. [5] It has a +5 dB boost in the midrange at around 2 kHz, and the bottom end starts rolling off at 200 Hz.
Frequency response (FR) This measurement tells you over what frequency range output level for an audio component will remain reasonably constant (either within a specified decibel range, or no more than a certain number of dB from the amplitude at 1kHz).