The M55i is a high efficiency, high power handling sub-bass loudspeaker designed specifically for permanent installations. The M55i features two McCauley 8141 15” cone drivers mounted in a mechanically and acoustically optimized bass reflex enclosure with large vent area to reduce port turbulence.
The M55i enclosure was designed with installation in mind. Its ultra-low 17” profile allows it to fit where other subwoofers cannot. It features 24 integrated fly points and optional array frames that allow for mounting to ceilings and the creation of traditional and cardioid flown arrays.
The 8141 incorporates McCauley Sound’s latest long excursion neodymium motor with an industry first hybrid paper composite cone. The 8141 motor has an FEA optimized Bl vs. displacement profile to improve linearity and reduce distortion, a large aluminum heat sink, and 4” aluminum voice coil to improve power handling. The new cone body balances high stiffness with the internal damping that is inherent to paper cone loudspeakers, leading to a low distortion punchy sound even at high power levels.
The enclosure is constructed of premium void-free birch hardwood plywood and is coated with a weather and wear resistant ProCoat™ polyurea hybrid finish. All rigging components are weather protected with a heat cured epoxy powder coat finish. Components in the front of the enclosure are protected by a flat grill made from perforated steel that is coated with heat cured epoxy powder, and lined with acoustically transparent foam.
Dance / DJ Club