Model No.:ECS-65T2 Type: Ceiling Speaker Power rating: 80 Watts MAX Impedance: 4/8 Ohm Transformer mount posts.: 5,15 WATTS Frequency response: 70 Hz To 15 KHz Sensitivity: 90dB at 1 Watt/Meter Drivers: 6.5 Inch Frame size: 230 * 90 MM Cutout dimensions: 196MM Depth behind mtg surface: 75mm Shipping weight: Two Done Tweeter Remark: