NAD T755, 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)
≤
0.1 %
Input Sensitivity (ref. 8 ohms, 1 kHz) 1
±
0.1 V
S/N Ratio (A-wtd, 1kHz, 1 W, 8 ohm, FL/C/FR/SL/SR)
≥
- 80 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, 1 W, 1 kHz)
≥
-54 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 (31 for O/P 1 W, Track 35) CCIR / ARM
≥
65 dB
Audio LPF
≥
64 dB
A-wtd
≥
68 dB
Channel Separation (1 W, 20 kHz LPF) Track 65 997 Hz
≥
55 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 Hz 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
≥
60 dB
I/P mode : L=R : 1 kHz, Ch C
≥
60 dB
I/P mode : L=-R : 1 kHz, Ch SL/SR
≥
60 dB
THD (2.2 V in, 1 W, w/ 80 kHz LPF, 1 kHz)
≤
0.2 %