EZB161-4 4" Loudspeaker Combo Package FC104T72/161-4 by Atlas Sound is a Factory-assembled loudspeaker packages save time and money. It has a High compliance 4" loudspeaker for full-range audio reproduction in background music and paging systems. Each loudspeaker employs a 10 ounce ceramic magnet and a damped, high-compliance cone to provide excellent low-frequency reproduction with smooth extended response. Selection includes models with easy-to-install torsion spring grilles and models with the cost-efficient, EZ-Mount installation system and paging systems. Choice of eight loudspeaker/transformer/baffle configurations