Vintage Asylum

Simple Formulas

69.30.72.240

In Reply to: RE: stupid question on speaker ohms posted by ngng88 on May 11, 2008 at 18:39:46

A simplistic way of looking at it:

Power equals current * current * impedance

If the impedance is only half (four ohms instead of eight), then current * current must double to get the same power (and same loudness).

However, the current flows through a circuit that passes through both the speaker and the amplifier/receiver. When current * current is doubled in the part of the receiver that the output current flows through, the power dissipated there (heat) also doubles. Be sure it can handle it.

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