Dynaudio P4-C80 - Performance Series 2-Way 8-Inch Ceiling LoudspeakerOver and above. Slimline in ceiling speaker with an 8in woofer. For larger rooms, or for situations where you want a little more power from your overhead Dolby ATMOS or distributed audio system, the P4 C80 with its 8in woofer could be your saviour. Especially if you're working in a tight space. The speaker will fit in cavities right down to 87mm deep, meaning you can keep the system totally consistent between rooms or hallways, even if the ceiling