NAD T752, Service Manual

Page: 4 / 63

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)
200 ± 20 mV
S/N Ratio (A-wtd, 1kHz, 1 W, 8 ohm, SL/SR)
≥ ≥
≥ ≥
≥
- 80 dB
(A-wtd, 1kHz, 80 W, 8 ohm, SL/SR)
≥ ≥ ≥ ≥ ≥
- 96 dB
Frequency Response (20 Hz - 20 kHz)
0 ± 0.8 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)
≥ ≥ ≥ ≥ ≥
-70 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 Response
@
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 Config.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
≥ ≥ ≥ ≥ ≥
70 dB
A-wtd
≥ ≥ ≥ ≥ ≥
70 dB
Channel Separation (1 W, 20 kHz LPF) Track 65 997 Hz
≥ ≥ ≥ ≥ ≥
75 dB
DOLBY PRO LOGIC II SECTION
Frequency Resporse
I/P mode : L, R : 1 V in, 1 W, Ch L/R 40 Hz
0 ± 1.5 dB
20 Hz
0 ± 0.8 dB
I/P mode : L, R : 1 V in, 1 W, Ch C 300 Hz
0 ± 0.8 dB
20 Hz
0 ± 0.8 dB
I/P mode : L, R : 1 V in, 1 W, Ch SL/SR 40 Hz
0 ± 1.5 dB
20 Hz
-3 ± 1.0 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 %