Lowell R-Series Ceiling Speakers Lowell's R Series 12W speaker assemblies are an excellent choice for quality general purpose paging and distributed music applications. The R Series 12W assemblies are comprised of a factory assembled 8" dual cone driver (Model 805) with a wired 25V, 70V, or dual voltage transformer, four choices of mounted grille, and optional volume control feature with knob style or screwdriver adjustment in the center of the grille. Speaker / transformer assemblies are manufactured to assure consistent performance with clear intelligibility and wide dispersion. The dual cone Model 805 driver has a power rating of 12 watts RMS and employs a 5 oz. ceramic magnet. The cone is molded of a high fibre content material to provide a smooth, extended frequency response and a clean, natural sound. To facilitate a variety of distributed applications each assembly includes a wired 25V or 70V transformer with .25, .5, 1, 2, and 4 watt taps; or a dual voltage 25/70V transformer with .5, 1, 2, and 4 watt taps.