Zeus System Test with 4:1 Output Transformer: 1 kHz THD at 4.1 Vac RMS into 8 ohms = 0.0079%Test bench with hardware. Test Configuration.
4.2 watts = 5.78 volts into 8 ohms - 1 kHz FFT (-3dB) - 0.0110% THD 2.1 watts = 4.09 volts into 8 ohms - 1 kHz FFT (-6dB) - 0.0079% THD 1.1 watts = 2.89 volts into 8 ohms - 1 kHz FFT (-9dB) - 0.0054% THD 0.5 watts = 2.05 volts AC RMS 8 ohms - 1 kHz FFT (-12dB) - 0.0042% THD 0.2 watts = 1.45 volts AC RMS into 8 ohms - 1 kHz FFT (-15dB) - 0.0030% THD 0.1 watts = 1.03 volts AC RMS into 8 ohms - 1 kHz FFT (-18dB) - 0.0028% THD MUTE = 0 volts into 8 ohms - noise, 50 Hz and harmoics, and computer / monitor PSU >30 kHz pickup - FFT
4.2 watts = 5.78 volts into 8 ohms - 1 kHz FFT (-3dB) - 0.032% THD 2.1 watts = 4.10 volts into 8 ohms - 1 kHz FFT (-6dB) - 0.018% THD 1.1 watts = 2.90 volts into 8 ohms - 1 kHz FFT (-9dB) - 0.011% THD 0.5 watts = 2.06 volts AC RMS 8 ohms - 1 kHz FFT (-12dB) - 0.0076% THD 0.2 watts = 1.45 volts AC RMS into 8 ohms - 1 kHz FFT (-15dB) - 0.0055% THD watts = 1.03 volts AC RMS into 8 ohms - 1 kHz FFT (-19dB) - 0.0051% THD TPA6120 + Power Amp only @ 2 watts, 4.1 volts into 8 ohms (All tests 24 bit, 192 kHz sampling, 1 million point transforms.) Design by: Susan Parker, MIEE. The information contained here may be used to construct one set of amplifiers specifically for personal NON commercial use only. N.B. Personal liability disclaimer applies. This page last modified on: 18th November 2005 All information, drawings and images Copyright © 1995 - 2005 Susan Parker unless otherwise credited. |