Audible Physics is proud to introduce the latest evolution of the RAM 2 SR drivers. RAM 2SR Features: Advanced Underhung Topology An Elegant Alloy Foil Cone and Cap High Grade neodymium magnet 20.4 mm high grade copper voice coil on aluminum bobbin Integrated Protective Grill RAM 2SR Specifications: Outside Flange Diameter: 74.2 mm Cut out dimension: 58.1mm Mounting Depth: 30.1 mm Net Weight: .22 kg Nominal Power Handling: 10 watts Nominal Impedance: 4 ohm Sensitivity: 85 db / w / m Frequency Response: 200 - 20,000 hz Resonant Frequency: 135 hz Voice coil diameter: 20.4 mm Voice coil height: 3.0 mm Voice coil former: Aluminum Voice coil wire: Copper Number of Layers: 2 DC resistance: 3.1 ohm Magnet system type: Neodymium BL: 2.6 TM Max linear excursion: +/- .5 mm Cms: 1 mm / N Sd: 16.6 cm sq Vas: 0.4 L Mms: 1.25 g Qms: 3.58 g Qes: 0.49 Qts: 0.45
