A computer-implemented method of controlling an audio system with at least two inputs in an automobile, the two inputs respectively corresponding to a left and a right channel, the method comprising: receiving at least one user interface command to modify a phantom center image of audio output from the audio system in the automobile, wherein the phantom center image of the audio output comprises a designated position of sound produced by a set of speakers in the audio system other than physical locations of the set of speakers in the audio system; and adjusting a perceived location (300; 302; 304; 400; 402; 404; 500; 502; 504; 600; 602; 604) of the phantom center image of the audio output from the audio system based upon the at least one user interface command to modify the phantom center image of the audio output, wherein the at least one user interface command comprises a plurality of commands from distinct user interface controls to modify a plurality of phantom center images of audio output, each relative to distinct seating locations, from the audio system in the automobile, characterised in that the adjusting the perceived location comprises: applying filter weights to the left channel output and the right channel output that remain the same regardless of the perceived location of the phantom center image of the plurality of phantom center images; and applying a distinct filter weight to a center upmixing filter at each perceived location of the phantom center image of the plurality of phantom center images, wherein the upmixing filter is applied to an upmixed center component generated by upmixing the left and right channels receiving at least one user interface command to modify a phantom center image of audio output from the audio system in the automobile, wherein the phantom center image of the audio output comprises a designated position of sound produced by a set of speakers in the audio system other than physical locations of the set of speakers in the audio system; and adjusting a perceived location (300; 302; 304; 400; 402; 404; 500; 502; 504; 600; 602; 604) of the phantom center image of the audio output from the audio system based upon the at least one user interface command to modify the phantom center image of the audio output, wherein the at least one user interface command comprises a plurality of commands from distinct user interface controls to modify a plurality of phantom center images of audio output, each relative to distinct seating locations, from the audio system in the automobile, characterised in that the adjusting the perceived location comprises: applying filter weights to the left channel output and the right channel output that remain the same regardless of the perceived location of the phantom center image of the plurality of phantom center images; and applying a distinct filter weight to a center upmixing filter at each perceived location of the phantom center image of the plurality of phantom center images, wherein the upmixing filter is applied to an upmixed center component generated by upmixing the left and right channels applying filter weights to the left channel output and the right channel output that remain the same regardless of the perceived location of the phantom center image of the plurality of phantom center images; and applying a distinct filter weight to a center upmixing filter at each perceived location of the phantom center image of the plurality of phantom center images, wherein the upmixing filter is applied to an upmixed center component generated by upmixing the left and right channels <EOS>