NAD T743, Руководство по обслуживанию

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4
SPECIFICATIONS
POWER AMPLIFIER SECTION
Rated distortion (Rated power level into 8 ohms, THD 20 Hz-20 kHz FL/C/FR)
≤
0.1 %
(Rated power level into 8 ohms, THD 20 Hz-20 kHz SL/SR/BS)
≤
0.1 %
Input Sensitivity (ref. 8 ohms, 1 kHz) 260
±±±±±
20mV
S/N Ratio (A-wtd, 1kHz, 1 W, 8 ohm, SL/SR/BL)
≥≥≥≥≥
- 75 dB
Frequency Response (20 Hz - 20 kHz) 0
±±±±±
1.0 dB
Channel Balance (1 dB to -40 dB, 1 kHz)
≤
2 dB
(-41 dB to -50 dB, 1 kHz)
≤
3 dB
Audio muting at 1 kHz
≥≥≥≥≥
55 dB
Subwoofer out, 500 mV in (THD at 2 V O/P, 100 Hz)
≤
0.5 %
Crosstalk (500 mV input, 10 W, 1 kHz)
≥≥≥≥≥
-57 dB
Controls
Bass (at 500 mV in, 1 W out, 100 Hz)
±±±±±
10 dB
±±±±±
2 dB
Treble (at 500 mV in, 1 W out, 10 kHz)
±±±±±
10 dB
±±±±±
2 dB
DOLBY DIGITAL SECTION
Channel Difference(FL ref. Track 30)
±±±±±
1.2 dB
Frequency Resporse at Dolby config.2 SL Track 46 200 - 20 kHz
±±±±±
0.8 dB
SR Track 47 200 - 20 kHz
±±±±±
0.8 dB
C Track 44 200 - 20 kHz
±±±±±
0.8 dB
Harmonic Distortion (1 W, Audio LPF, Dolby Congfig 1) FL Track 65 997 Hz
≤
0.08 %
FR Track 67 997 Hz
≤
0.08 %
SL Track 68 997 Hz
≤
0.08 %
SR Track 69 997 Hz
≤
0.08 %
C Track 66 997 Hz
≤
0.08 %
S/N Ratio (TRACK 30 for O/P 1 W, FAUSE) CCIR / ARM
≥≥≥≥≥
65 dB
Audio LPF
≥≥≥≥≥
70 dB
A-WTD
≥≥≥≥≥
70 dB
Channel Separation (1 W, A-WTD FILTER) Track 65 997 Hz
≥≥≥≥≥
60 dB
DOLBY PRO LOGIC II SECTION
Frequency Resporse
I/P mode : L, R : 1 V in, 1 W, Ch L/R 40 Hz 0
±±±±±
2.0 dB
20 kHz 0
±±±±±
2.0 dB
I/P mode : L=R : 1 V in, 1 W, Ch /L/R 40 Hz 0
±±±±±
2.0 dB
Ch C 20 kHz 0
±±±±±
2.0 dB
I/P mode : L=-R : 1 V in, 1 W, Ch SL/SR 40 Hz 0
±±±±±
2.0 dB
20 kHz 0
±±±±±
2.0 dB
S/N Ratio (200 mV in, 1 W, A-WTD w/ 1 k termination)
I/P mode : L, R : 1 kHz, Ch L/R
≥≥≥≥≥
65 dB
I/P mode : L=R : 1 kHz, Ch C
≥≥≥≥≥
65 dB
I/P mode : L=-R : 1 kHz, Ch SL/SR
≥≥≥≥≥
65 dB
THD (2.2 V in, 1 W, w/ 80 kHz LPF, 1 kHz)
≤
0.2 %