Through the use of the super strong neodymium magnet system a minimal installation depth is made possible for our flat loudspeakers we use a flat spider made of heat resistant linen for a longer piston motion range thus first class bass playback is made possible the vents in the basket provide good ventilation and minimal compression the diaphragm is injection moulded with carbon fibre and attached to the chassis with vibration dampening rubber surrounds the long stroke voice coil is ma