A method for a media playback system comprising a left playback device and a right playback device configured for playing left and right channels of audio content, respectively, each playback device comprising a plurality of audio drivers (602, 603, 604, 608, 609, 610) each playback device having a particular inherent radiation pattern, the method comprising: receiving data representing audio content, wherein each datum of the data indicates a frequency and an amplitude corresponding to the frequency; characterized by further comprising: determining a first transfer function based on an inherent radiation pattern of the first playback device; determining a second transfer function based on an inherent radiation pattern of the second playback device; wherein: the determined transfer functions, when applied to the audio content to be output by the first and second playback devices, result in first and second target radiation patterns, respectively; the first target radiation pattern of the first playback device has a maximum magnitude in a direction toward the second playback device; the second target radiation pattern of the second playback device has a maximum magnitude in a direction toward the first playback device; and the first and second target radiation patterns have lower magnitudes than their respective maximum magnitude in a direction perpendicular to a line between the first and second playback devices; processing, each datum of the data based on the frequency indicated by the given datum and the determined transfer function to determine a new amplitude corresponding to the given datum; and providing, to each audio driver, a respective signal representing the data processed by the respective transfer function for the particular audio driver. receiving data representing audio content, wherein each datum of the data indicates a frequency and an amplitude corresponding to the frequency; characterized by further comprising: determining a first transfer function based on an inherent radiation pattern of the first playback device; determining a second transfer function based on an inherent radiation pattern of the second playback device; wherein: the determined transfer functions, when applied to the audio content to be output by the first and second playback devices, result in first and second target radiation patterns, respectively; the first target radiation pattern of the first playback device has a maximum magnitude in a direction toward the second playback device; the second target radiation pattern of the second playback device has a maximum magnitude in a direction toward the first playback device; and the first and second target radiation patterns have lower magnitudes than their respective maximum magnitude in a direction perpendicular to a line between the first and second playback devices; processing, each datum of the data based on the frequency indicated by the given datum and the determined transfer function to determine a new amplitude corresponding to the given datum; and providing, to each audio driver, a respective signal representing the data processed by the respective transfer function for the particular audio driver. determining a first transfer function based on an inherent radiation pattern of the first playback device; determining a second transfer function based on an inherent radiation pattern of the second playback device; wherein: the determined transfer functions, when applied to the audio content to be output by the first and second playback devices, result in first and second target radiation patterns, respectively; the first target radiation pattern of the first playback device has a maximum magnitude in a direction toward the second playback device; the second target radiation pattern of the second playback device has a maximum magnitude in a direction toward the first playback device; and the first and second target radiation patterns have lower magnitudes than their respective maximum magnitude in a direction perpendicular to a line between the first and second playback devices; the determined transfer functions, when applied to the audio content to be output by the first and second playback devices, result in first and second target radiation patterns, respectively; the first target radiation pattern of the first playback device has a maximum magnitude in a direction toward the second playback device; the second target radiation pattern of the second playback device has a maximum magnitude in a direction toward the first playback device; and the first and second target radiation patterns have lower magnitudes than their respective maximum magnitude in a direction perpendicular to a line between the first and second playback devices; processing, each datum of the data based on the frequency indicated by the given datum and the determined transfer function to determine a new amplitude corresponding to the given datum; and providing, to each audio driver, a respective signal representing the data processed by the respective transfer function for the particular audio driver.