A speaker system comprising: a speaker cabinet that has an opening; a speaker unit, including a diaphragm, attached to the speaker cabinet; and at least one acoustic tube opened at both ends thereof, wherein one end of the acoustic tube is positioned inside the speaker cabinet, the other end of the acoustic tube is connected to the opening, wherein the shape of the acoustic tube is a spiral-shape or a meandering shape inside the speaker cabinet, characterized in that the speaker system is configured so that an amplitude of a vibration caused by applying a first AC signal having a frequency included in a first frequency band to the speaker unit is lower than a reference amplitude, the reference amplitude being an amplitude of vibration caused by applying the same AC signal to a reference speaker in which the same speaker unit is attached to a closed type cabinet having the same internal volume as the speaker cabinet, the speaker system is further configured so that a sound pressure produced by applying a correction AC signal together with the first AC signal to the speaker unit is equal to or lower than a sound pressure produced by applying a third AC signal to the reference speaker, the third AC signal having the same amplitude as the first AC signal and a frequency equal to or higher than a minimum resonance frequency of the closed type cabinet determined by the internal volume and the diameter of the speaker unit, the correction AC signal having the same frequency as the first AC signal, wherein an amplitude of the vibration caused by applying the correction AC signal together with the first AC signal to the speaker unit is equalized to the reference amplitude, the first frequency band includes a first resonance frequency determined by an acoustic mass of the acoustic tube and an acoustic compliance component which is determined by an internal volume of the speaker cabinet excluding a volume of the acoustic tube, and the first resonance frequency is lower than the minimum resonance frequency of the closed type cabinet. a speaker cabinet that has an opening; a speaker unit, including a diaphragm, attached to the speaker cabinet; and at least one acoustic tube opened at both ends thereof, wherein one end of the acoustic tube is positioned inside the speaker cabinet, the other end of the acoustic tube is connected to the opening, wherein the shape of the acoustic tube is a spiral-shape or a meandering shape inside the speaker cabinet, characterized in that the speaker system is configured so that an amplitude of a vibration caused by applying a first AC signal having a frequency included in a first frequency band to the speaker unit is lower than a reference amplitude, the reference amplitude being an amplitude of vibration caused by applying the same AC signal to a reference speaker in which the same speaker unit is attached to a closed type cabinet having the same internal volume as the speaker cabinet, the speaker system is further configured so that a sound pressure produced by applying a correction AC signal together with the first AC signal to the speaker unit is equal to or lower than a sound pressure produced by applying a third AC signal to the reference speaker, the third AC signal having the same amplitude as the first AC signal and a frequency equal to or higher than a minimum resonance frequency of the closed type cabinet determined by the internal volume and the diameter of the speaker unit, the correction AC signal having the same frequency as the first AC signal, wherein an amplitude of the vibration caused by applying the correction AC signal together with the first AC signal to the speaker unit is equalized to the reference amplitude, the first frequency band includes a first resonance frequency determined by an acoustic mass of the acoustic tube and an acoustic compliance component which is determined by an internal volume of the speaker cabinet excluding a volume of the acoustic tube, and the first resonance frequency is lower than the minimum resonance frequency of the closed type cabinet.