Embodiments provide apparatuses and systems which include a front surface, a back surface, and a second back surface. A speaker may be disposed between the front surface and the back surface. The speaker is to direct audio substantially orthogonally through the back surface. The second back surface is to enable an acoustic response from the speaker. A method is also provided which enables a computing device to determine whether it is engaging a surface. In response to the determination, the computing device may adjust the audio signal provisioned to a speaker directed orthogonally to the surface, and output the audio signal to provision an omni-directional acoustic response.