RU-PA40D 40W Stereo Power Audio Amplifier Review

RU-PA40D 40W Stereo Power Audio Amplifier

Crosstalk: Better than 60 dB (1 kHz, no compression) Compressor: Threshold nominally 2 dB below rated output, automatically adjusting attack and release times THD+N: < 0.1% (1 kHz, 1 W, 4 or 8 Ohms); < 1% (50 Hz to 20 kHz,)* *measured at compressor threshold level equaling 12 W RMS (8 Ohms) output power VCA Control: External 0 to 10 Vdc (linear), 10 kΩ linear taper potentiometer, RDL remote controls10 Vdc VCA reference voltage output provided Frequency Response: 20 Hz to 20 kHz (+/- 1 dB, 4 or 8 Ohms)* Maximum Input Levels: +22 dBu balanced, +12 dBV unbalanced Gain Adjustments (2): Single turn, one per channel Minimum Input Levels: -11 dBu balanced, -18 dBV unbalanced (to cross compressor threshold) Input Impedance: 50 kΩ balanced, 20 kΩ unbalanced Inputs (4): Line level: Balanced (+4 dBu) Left and Right, Unbalanced (-10 dBV) Left and Right Noise (below 20 W RMS): < -80 dB (VCA control 6.25V; output level 6 dB below max.) < -70 dB (VCA control max.) Selectors (2): Slide switches: Output Impedance 4 Ohms or 8 Ohms; Input Mode SUMMED MONO or STEREO Output Power: 20 W RMS into 8 Ω per channel, 40 W RMS total; 15 W RMS into 4 Ω per channel, 30 W RMS total Output Circuit: Class D Ambient Operating Environment: 0?? C to 40?? C Maximum; 20?? C Recommended Indicators (2): Red LED: THRESHOLD LED indicates compressor activity; Blue LED: POWER on Power Supply (included): 100 to 240 Vac, 50-60 Hz, 1.5A; 24 Vdc output to module

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