Ecophon Extra Bass is a low frequency absorber, part of Ecophon Master Rigid systems and optional with Ecophon Gedina systems. Extra Bass reduces unwanted sounds at 125 Hz and greatly improves listening comfort and speech clarity in the room. Extra Bass consists of a 3rd generation glass wool core that is fully encapsulated in a micro perforated plastic film, making the product easy to slide and position on top of the ceiling panel. The absorber never needs to be cut as it is very flexible and can be bent or folded around ducting or similar when so needed. For best acoustic performance Extra Bass shall cover minimum 50% of the ceiling area and may advantageously be placed in a U-shape along the walls.