Description: The G12M Greenback has evolved over the decades but still retains its essential sought- after tone. Angus Young has been a Greenback devotee since the early days of AC/DC.This model is voiced with additional broad mid-range attack and restrained top-end to give a forward punchy attitude to chords and a searing lead tone without fizz. With its well-controlled low end it can be used singly in low-powered amps or in multiples for high-power rock heads. It’s an ideal guitar speaker to bring drive and definition to modern high gain amps.Specifications: Nominal diameter: 305mm / 12in Power rating: 25W Rated impedance: 8Ω or 16Ω Sensitivity: 98dB Chassis type: Pressed steel Magnet type: Ceramic Magnet weight: 0.99kg / 35oz Voice coil diameter: 1.75in / 44mm Voice coil material: Round copper Frequency range: 75-5000Hz Resonance frequency, Fs: 75Hz DC resistance, Re: 6.7Ω & 13.1Ω Mounting Information: Cut-out diameter: 283mm / 11.1in Diameter: 309mm / 12.2in Magnet structure diameter: 150mm / 5.9in Mounting hole dimensions: 7.9mm / 0.31in Ø Mounting hole PCD: 297mm / 11.7in Number of mounting holes: 4 Chassis depth (inc gasket): 91mm / 3.58in Magnet depth: 39mm / 1.52in Overall depth: 130mm / 5.1in Unit weight: 3.6kg / 7.9lb