4ohm and 2ohm


why does ratio of 4 ohm and 2 ohm load differs in different amps.

Example: Amplifier A has 100 x 2 4ohm
160 x 2 2ohm

Amplifier B has 125 x 2 4ohm
150 x 2 2ohm

New member
Username: Glasswolf

Post Number: 695
Registered: 12-2003
when the impedance is halved, the power output is doubled, theoretically. this is without calculating for efficiency, and loss through things like heat.
realistic gain going from 4 Ohms to 2 Ohms, is about an 80% gain in class-AB amplifiers that are built well. closer to 90% for class-D.
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