Celestion Original Series guitar speaker. As the name suggests, the Tube 10 sounds great when driven by tube amplification. Designed to deliver maximum response and classic tone, this little speaker truly rocks. When overdriven it has an unobtrusive distortion. GENERAL SPECIFICATIONS Nominal diameter 10", 254mm Power Rating 30W Nominal impedance 8Ω Sensitivity 94dB Chassis type Pressed steel Voice coil diameter 1.5", 38.1mm Voice coil material Round copper Magnet type Ceramic Magnet weight 17oz, 0.48kg Frequency range 85-5000Hz Resonance frequency, Fs 91Hz