A system and method embed an audio signature in a video frame. Adaptive cut-off frequency determination by power spectrum curve analysis, and bass expansion by both fundamental frequency illusion and equalization. The cartridge holding area includes a pair of guide rails extending between the first and second ends of the dispenser, the guide rails extending away from one another. A rotary encoder detects a rotational speed of a drum shaft of each photosensitive drum. The thermal conductor comprises at least one of a group comprising: a thermally conductive knead, a plasticine, a kneadable and thermally conductive material, and a plastically deformable and thermally conductive material.