The speaker used in the SD72WV is the next generation of Atlas high performance cone speakers, very similar to the preceding C-Series speakers. The similarity in the sonic qualities ensures that contractors and designers who have worked with the AtlasIED C-Series in the past will know exactly what to expect when they use the SD72WV. Model SD72WV is a 25 watt 8" (205mm) speaker with a 10oz. (260g) ceramic magnet. It includes a curvilinear, treated paper cone for lower harmonic distortion. The speaker is also equipped with a full 1" diameter copper voice coil with a black anodized aluminum former for better power dissipation. Model SD72WV operates within a frequency response range of 45Hz-19kHz (nominal) with a sensitivity of 97dB and a dispersion angle of 105°. Package includes factory-installed 25/70.7V line matching transformer with tap selections ranging from .25 to 5 watts. The SD72WV includes a factory-installed CRS baffle with concealed speaker mounting studs and includes screw mount hardware. The SD72WV baffle features standard mounting holes to accommodate the majority of AtlasIED 8" tile bridges, mounting rings and enclosures. When specifying mounting hardware be advised that the dimensions of the SD72WV baffle match the AtlasIED Model 62-8. The baffle finish is white powder coat epoxy. The baffle-mounted volume control has a 5-watt audio rating and is factory wired to the voice coil. Units are shipped assembled, ready for installation. Features 10oz Speaker Provides Familiar Response & Performance Attractive CRS White Powder Coat Baffle with Center Mounted Volume Control Incorporate or Remove Volume Control Knob to Suit Application Requirements Individually Packaged for Stocking & Ordering Convenience Quality 5 Watt-Dual Voltage Transformer ETL Certified, Safety Listed to UL1480.