What is the damping factor?
Damping factor is related to amplifier output impedance, and can be explained as the ability of the amplifier to control the movement of a loudspeakers’ voice coil. For a given speaker load, the damping factor is, in practice, given mostly by the cable impedance, so that one should not place too much importance on this amplifier parameter. It is also important to note that damping is directly related to the speaker load, so that using an 8 ohm load will yield twice the damping factor compared to a 4 ohm load. To maintain a high damping factor, always use cable of appropriate thickness (gauge).