In Reply to: I think in a perfect world zero would be ideal, posted by gonzo on October 13, 2016 at 13:09:11:
At DC:
(P = watts, V = volts, R = ohms)
P = V^2 / R
R = 8 (typical)
V = 1.2 * 10^-3
V^2 = 1.44 * 10^-6
P = V^2 / R = 1.44 * 10^-6 / 8 = 0.18 * 10^-6 = about 1/5 of a microwatt
That will cause negligible voice coil heating and virtually zero deflection of the voice coil in the gap. Nothing to worry about.
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Follow Ups
- RE: I think in a perfect world zero would be ideal, - JonM 04:56:46 10/14/16 (0)