A feedback compensator for an active noise reduction, ANR, device configured to output a noise reduction signal to an electroacoustic transducer in response to a feedback signal from a feedback microphone, wherein the feedback compensator comprises: a fixed filter configured to receive the feedback signal from the feedback microphone and to filter it, so as to output a loop gain; a tunable filter that modulates the loop gain in response to an adverse low frequency event being detected in the noise reduction signal outputted from the tunable filter, the adverse low frequency event designating a discrete acoustic signal or a low frequency pressure disturbance which, when picked up by the feedback microphone, causes the noise reduction device to overrun the capacity of the electronics or the transducer in trying to reduce the resulting noise, thereby creating audible artifacts which are deemed objectionable by some users, wherein the tunable filter is configured to maintain a substantially similar loop gain shape near a low frequency cross-over as the low frequency cross-over changes during loop gain modulation, wherein the substantially similar loop gain shape near the low frequency cross-over comprises a substantially similar shaped magnitude and phase, wherein the low frequency cross-over is the approximate point where the loop gain magnitude crosses zero; a logic processor configured to calculate a frequency multiplier value in response to an adverse low frequency event being detected in the noise reduction signal outputted from the tunable filter, characterized in that the frequency multiplier value is calculated according to a method that comprises: comparing the noise reduction signal to a threshold indicative of an adverse low frequency event; in response to the noise reduction signal exceeding the threshold, calculating a current frequency multiplier value based on an amount by which the threshold was exceeded, and wherein the method further comprises: comparing the current frequency multiplier value with a previous frequency multiplier value to determine whether the adverse low frequency event is increasing or dissipating. a fixed filter configured to receive the feedback signal from the feedback microphone and to filter it, so as to output a loop gain; a tunable filter that modulates the loop gain in response to an adverse low frequency event being detected in the noise reduction signal outputted from the tunable filter, the adverse low frequency event designating a discrete acoustic signal or a low frequency pressure disturbance which, when picked up by the feedback microphone, causes the noise reduction device to overrun the capacity of the electronics or the transducer in trying to reduce the resulting noise, thereby creating audible artifacts which are deemed objectionable by some users, wherein the tunable filter is configured to maintain a substantially similar loop gain shape near a low frequency cross-over as the low frequency cross-over changes during loop gain modulation, wherein the substantially similar loop gain shape near the low frequency cross-over comprises a substantially similar shaped magnitude and phase, wherein the low frequency cross-over is the approximate point where the loop gain magnitude crosses zero; a logic processor configured to calculate a frequency multiplier value in response to an adverse low frequency event being detected in the noise reduction signal outputted from the tunable filter, characterized in that the frequency multiplier value is calculated according to a method that comprises: comparing the noise reduction signal to a threshold indicative of an adverse low frequency event; in response to the noise reduction signal exceeding the threshold, calculating a current frequency multiplier value based on an amount by which the threshold was exceeded, and comparing the noise reduction signal to a threshold indicative of an adverse low frequency event; in response to the noise reduction signal exceeding the threshold, calculating a current frequency multiplier value based on an amount by which the threshold was exceeded, and wherein the method further comprises: comparing the current frequency multiplier value with a previous frequency multiplier value to determine whether the adverse low frequency event is increasing or dissipating.