General > General Technical Chat
Audio Amplifier Power Output Cunundrum
Zero999:
--- Quote from: DW1961 on October 13, 2021, 12:06:44 am ---
--- Quote from: Zero999 on October 07, 2021, 05:57:04 pm ---It's BS. It won't deliver that much RMS power into a 4 Ohm load, with a 19V power supply, even at 100% efficiency.
P = V2/R
For a sine wave:
PRMS = PREAK/2
Therefore:
POUT = VSUPPLY2/(2R)
POUT = 192/(2*4) = 361/8 = 45.125W
--- End quote ---
What about two of the same amp chips running in BTL mode?
--- End quote ---
My calculations are for the amplifier configured in BTL mode, with a single supply.
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