April 1, 2024
Tube stereo power amplifier, audio research VT130SE
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Tube stereo poweramplifier. audio research VT130SE working, visually: very good! see photo Power output 110 watts per channel continuous at 16 ohms from 20Hz to 20kHz with less than 1.0% total harmonic distortion (typically below .05% at 1 watt). Approximate actual power available at "clipping" 120 watts (1kHz) Power bandwidth (-3dB points) 15Hz to 80kHz Frequency response (-3dB points at 1 watt) 5Hz to 160 kHz Input sensitivity 1.2V RMS balanced for rated output Input impedance 200K ohms balanced Output taps Output regulation Approximately 0.5dB 16 ohm load to open circuit Overall negative feedback 20 dB Damping factor 16 Distortion Slew rate 17 volts/microsecond Rise time 2.0 microseconds Hum & noise Less than 0.5mV RMS 98dB below rated output (IHF weighted, input shorted) Power supply energy storage VT130: 280 joules VT130SE: 325 joules Power requirements 105-125VAC 60Hz (210-250VAC 50Hz) 620 watts at rated output, 900 watts maximum, 380 watts at "idle" Tube complement (4) 6922, (2) 12BH7, (4 matched pairs) 6550 Please contact me with any questions.
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