Davide
Senior Member
I also quote Purifi's very kind reply:
The online 1ET400 datasheet describes the supply pumping effect that exist with single ended class-d amplifiers like the 1ET400. See section 4.1.1.
Some power supplies have active rectifiers and do not have issues with supply pumping, like the HYPEX SMPS1200A400, where as the SMPS3KA400 can have issues.
We use the SMPS1200A400 in our demo amp, and do not invert the phase on one channel.
With other power supplies that do not have active rectifiers the phase inversion is highly recommended.
The online 1ET400 datasheet describes the supply pumping effect that exist with single ended class-d amplifiers like the 1ET400. See section 4.1.1.
Some power supplies have active rectifiers and do not have issues with supply pumping, like the HYPEX SMPS1200A400, where as the SMPS3KA400 can have issues.
We use the SMPS1200A400 in our demo amp, and do not invert the phase on one channel.
With other power supplies that do not have active rectifiers the phase inversion is highly recommended.