Ohmic Audio

Amplifier Setup Card

Amplifier setup quick reference card showing safe gain-setting steps, meter hookup points, the target voltage formula, and a documentation checklist
This card keeps the setup order in one place: flat source settings, the correct test tone, DMM across the speaker outputs, and the target-voltage formula that keeps gain matching repeatable.

Gain setting target voltages:

Power (W)  |  4Ω load   |  2Ω load   |  8Ω load
50W        |  14.1V     |  10.0V     |  20.0V
100W       |  20.0V     |  14.1V     |  28.3V
250W       |  31.6V     |  22.4V     |  44.7V
500W       |  44.7V     |  31.6V     |  63.2V
1000W      |  63.2V     |  44.7V     |  89.4V
2000W      |  89.4V     |  63.2V     |  126.5V

Formula: V_target = √(Power × Impedance)