A control device for controlling a loudspeaker in a loudspeaker enclosure, the control device comprising: - an input for an audio signal (S audio ) to be reproduced; - a supply output for supplying an excitation signal for the loudspeaker; - the calculation means for calculating, at each time instant (t), at least one predicted current (i ref (t)) for the excitation signal for the loudspeaker as a function of the audio signal (S audio ); characterised in that the control device comprises an attenuator that is capable of limiting the predicted current (I ref (t)) to a limited current value ((i ref ) applied ) that is lower than a ceiling value (I max (t)) by application, to the predicted current (i ref (t)), of an attenuation gain (g att (t)) which is a function of the predicted current (i ref (t)), the attenuator being capable of applying an attenuation gain (g att (t)) comprised between 0 and 1 and which tends to 1 when the value of the limited current is lower than the ceiling value (I max (t)), the attenuation gain (g att (t)) satisfying the following relations: If i ref t > i max t when g att t = i max t / i ref t If i ref t ≤ i max t then g att t = g att t − T s + k × 1 − g att t − T s where g att (t - Ts) is the value of the attenuation gain at the preceding calculation step, Ts being the time separating two successive calculations; k is a constant that is included in ]0,1[; i max (t) is the ceiling value for the current; i ref (t) is the predicted value for the current, the control device including calculation means for calculation of the voltage (U ref ) to be applied based on the current (Iref(t)) to be applied, the voltage (U ref ) to be applied depending on the value of the current limited ((I ref ) applied (t)), and the voltage (U ref ) to be applied forming the excitation signal of the loudspeaker. - an input for an audio signal (S audio ) to be reproduced; - a supply output for supplying an excitation signal for the loudspeaker; - the calculation means for calculating, at each time instant (t), at least one predicted current (i ref (t)) for the excitation signal for the loudspeaker as a function of the audio signal (S audio ); the attenuator being capable of applying an attenuation gain (g att (t)) comprised between 0 and 1 and which tends to 1 when the value of the limited current is lower than the ceiling value (I max (t)), the attenuation gain (g att (t)) satisfying the following relations: If i ref t > i max t when g att t = i max t / i ref t If i ref t ≤ i max t then g att t = g att t − T s + k × 1 − g att t − T s where g att (t - Ts) is the value of the attenuation gain at the preceding calculation step, Ts being the time separating two successive calculations; k is a constant that is included in ]0,1[; i max (t) is the ceiling value for the current; i ref (t) is the predicted value for the current, where g att (t - Ts) is the value of the attenuation gain at the preceding calculation step, Ts being the time separating two successive calculations; k is a constant that is included in ]0,1[; i max (t) is the ceiling value for the current; i ref (t) is the predicted value for the current, the control device including calculation means for calculation of the voltage (U ref ) to be applied based on the current (Iref(t)) to be applied, the voltage (U ref ) to be applied depending on the value of the current limited ((I ref ) applied (t)), and the voltage (U ref ) to be applied forming the excitation signal of the loudspeaker. <EOS>