D
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For example, a class AB amplifier with a linear power supply such as Dayton APA150 doesn't have electromagnetic radiation associated with class D PWM frequencies and SMPS noise.
SMPS noise in house wires contribute to electromagnetic radiation from house wires. Good switch mode power supplies have common mode choke and a few other dirty electricity suppression tricks. But, I don't know which switch mode power supplies do their best to not pollute house wires. I will have to measure.
Other than SMPS noise and electromagnetic radiation at class D chipset PWM frequencies, I suspect there could be electromagnetic radiation around audio frequencies because power amplifiers have to deliver audio signals to speakers. Speaker cables can be shielded. I don't yet know what it would take to suppress electromagnetic radiation at audio frequencies.
Do you know good ways to minimize electromagnetic radiation from power amplifiers?
SMPS noise in house wires contribute to electromagnetic radiation from house wires. Good switch mode power supplies have common mode choke and a few other dirty electricity suppression tricks. But, I don't know which switch mode power supplies do their best to not pollute house wires. I will have to measure.
Other than SMPS noise and electromagnetic radiation at class D chipset PWM frequencies, I suspect there could be electromagnetic radiation around audio frequencies because power amplifiers have to deliver audio signals to speakers. Speaker cables can be shielded. I don't yet know what it would take to suppress electromagnetic radiation at audio frequencies.
Do you know good ways to minimize electromagnetic radiation from power amplifiers?