Animate only the visible components of this exact three-speaker...

“Animate only the visible components of this exact three-speaker source image. Use a perfectly locked camera and identical framing. Move the three existing speaker cones and dust caps a small distance inward and outward along their true central axes in four evenly spaced bass pulses. Their flexible surrounds compress naturally while every circular rim, center and concentric rib remains coherent. Let the middle and lower cones respond at slightly delayed phases. Keep the cabinets, grille fabric outside the cones, bolts, metal corners, seams and indicator positions completely rigid. The existing red indicator lamps vary brightness very modestly with the bass rhythm. Preserve all source surfaces, colours and original scene content. Maintain smooth periodic physical motion suitable for repetition, without a frozen tail or reversed playback. Add no objects, materials, lights or visual effects. No camera motion, spinning, sideways wobble or global deformation.”