- Finely perforated grille over the entire front of speaker- Fully enclosed industrial grade steel construction- Enclosed back can- 8 main cone with secondary high-frequency cone- 70V/25V 4-watt transformer (4 2 1 0.5 0.25 watt) taps; selected by rotary switch- Seismic attachment point- Available in off-white and bright white (U versions) grille finish- VR versions have a recessed volume control (front-mounted) - Complies with requirements of UL-2043- Support rail crossbar (included)