A method of determining mix coefficients for downmixing a multichannel input signal, having a right input channel, a left input channel and a center input channel to an output signal having a right output channel and a left output channel, comprising: receiving the multichannel input signal at signal inputs corresponding to each input channel; bandwidth limit filtering each input channel of the multichannel input signal to obtain a limited bandwidth multichannel input signal comprising bandwidth limited input channel information for each input channel; determining a bandwidth limited input channel energy for each of the right input channel and the left input channel using the bandwidth limited input channel information for each of the right, left and center input channels; determining a bandwidth limited output channel energy for the right output channel and the left output channel using the bandwidth limited input channel information for each of the right, left and center input channels and test mix coefficients; determining updated values for the test mix coefficients based on a comparison between the bandwidth limited input channel energy of one of either the left input channel or the right input channel with the bandwidth limited output channel energy of the corresponding one of either the left output channel or right output channel such that the signal energy and intended direction of the limited bandwidth multichannel input signal are substantially preserved; updating full bandwidth mix coefficients using the updated values of the test mix coefficients; and mixing the multichannel input signal to obtain the output signal using the full bandwidth mix coefficients. receiving the multichannel input signal at signal inputs corresponding to each input channel; bandwidth limit filtering each input channel of the multichannel input signal to obtain a limited bandwidth multichannel input signal comprising bandwidth limited input channel information for each input channel; determining a bandwidth limited input channel energy for each of the right input channel and the left input channel using the bandwidth limited input channel information for each of the right, left and center input channels; determining a bandwidth limited output channel energy for the right output channel and the left output channel using the bandwidth limited input channel information for each of the right, left and center input channels and test mix coefficients; determining updated values for the test mix coefficients based on a comparison between the bandwidth limited input channel energy of one of either the left input channel or the right input channel with the bandwidth limited output channel energy of the corresponding one of either the left output channel or right output channel such that the signal energy and intended direction of the limited bandwidth multichannel input signal are substantially preserved; updating full bandwidth mix coefficients using the updated values of the test mix coefficients; and determining a bandwidth limited input channel energy for each of the right input channel and the left input channel using the bandwidth limited input channel information for each of the right, left and center input channels; determining a bandwidth limited output channel energy for the right output channel and the left output channel using the bandwidth limited input channel information for each of the right, left and center input channels and test mix coefficients; determining updated values for the test mix coefficients based on a comparison between the bandwidth limited input channel energy of one of either the left input channel or the right input channel with the bandwidth limited output channel energy of the corresponding one of either the left output channel or right output channel such that the signal energy and intended direction of the limited bandwidth multichannel input signal are substantially preserved; updating full bandwidth mix coefficients using the updated values of the test mix coefficients; and mixing the multichannel input signal to obtain the output signal using the full bandwidth mix coefficients.