Acer AL922 AL922 Monitor Service Guide - Page 19

2.9 Audio Technical specification 2.9.1 General Description: Output power : 1W + 1W maximum Total harmonic distortion : Less than 1 % (except speakers distortion) Input signal sensitivity : 0.5 Vrms for full output Input impedance : 47 Kohm +/- 5 % Frequency response range : 20Hz - 20kHz (except speakers response) Difference of L and R output : Less than 2 dB 2.9.2 Electrical characteristics (Tamb=25°) Audio amplifier(USE Panasonic VP-7723A Audio Analyzor. ) Item Input Voltage(V) Input Current(m A) Audio Voltage Gain Frequency Response Signal to Noise ratio Total harmonic distortion Cross talk Output Watt. Volume Control Audio Input Freq. Min. - - 500m Vrms 1KHz - 500m Vrms 300Hz-20KHz -10dB 500m Vrms 1KHz - 500m Vrms 1KHz 500m Vrms 1KHz - 500m Vrms 1KHz - - Spec. Comment Typ. Max. 5 - 500 800 - 6 d B Volume Max.,load 4 Ω - +10d B Volume Max.,load 4 Ω - -40dB Volume Max.,load 4 Ω 1% except speakers distortion - -30dB Volume Max.,load 4 Ω - 1W Volume Max.,load 4 Ω - - Analog 2.9.3 Speakers Maximum power Impedance Frequency response range Total harmonic distortion 2.9.4 Headphone output Output power : 2 W per speaker(max) : 4 ohm +/- 15 % @ 1kHz 1.0Hz : 350 Hz - 15 kHz (S.P.L. - 10 dB) : Less than 5 % @ 0.125 W 1kHz : 1.6 mW for 32 ohms Headphone 19