performed the measurements of the LKV PWR-3 with my Audio Precision SYS2722 system. Because the amplifier has a class-D output stage, I inserted an Audio Precision AUX-0025 passive low-pass filter between the test load and the analyzer. This filter mitigates RF noise that would otherwise drive the SYS2722’s input circuitry into slew-rate limiting. Without the filter, 210mV of ultrasonic noise with a center frequency of 500kHz was
MEASUREMENTS
Aug 09, 2022
2 minutes
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