Abstract: One embodiment of the invention provides a post extension system frame assembly for mounting fixtures within a recess in a wall or ceiling and that can be adjusted and installed with minimal time and effort. One feature of the invention provides a post extension and angling mechanism that can be manually installed and/or adjusted to set the depth, direction and angle of an audio device so as to be able to position the sound dispersion axis of the audio device (e.g., speaker, tweeter, woofer, audio transducer, etc.) directly towards a listener.