NAD T 175, Service Manual, Page: 4 / 102

4
SPECIFICATIONS
PRE AMPLIFIER SECTION
Rated distortion (Ext 7.1 1kHz 500mV input ,Pre-out 1V with 30kHz LPF, FL/C/FR)
≤
0.1 %
(Ext 7.1 1kHz 500mV input ,Pre-out 1V with 30kHz LPF, SL/SR/BL/BR)
≤
0.1 %
S/N Ratio (Ext 7.1 1kHz 500mV input ,Pre-out 1V with A-WTD, 1kΩ termination,
≥
- 85 dB
FL/C/FR/SL/SR/BL/BR)
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 Pre-out, 100 Hz)
≤
0.5 %
Crosstalk (500 mV input, ref @ 1V out, 1 kHz)
≥
-60 dB
Controls
Bass (at 500 mV in, ref @ 1V out, 100 Hz)
±
10 dB
±
2 dB
Treble (at 500 mV in, ref @ 1V out, 100 Hz)
±
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 V, 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 100mV @ Pre-out, Track 35) CCIR / ARM
≥
65 dB
Audio LPF
≥
70 dB
A-wtd
≥
70 dB
DOLBY PRO LOGIC II SECTION
Frequency Resporse
I/P mode : L, R : 1 V in, 1V @ Pre-out, Ch L/R 40 Hz 0
±
2.0 dB
20 kHz 0
±
2.0 dB
I/P mode : L=R : 1 V in, 1V @ Pre-out, 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, 1V @ Pre-out, Ch SL/SR 40 Hz 0
±
2.0 dB
20 kHz 0
±
2.0 dB
S/N Ratio (200 mV in, 100mV @ Pre-out, A-WTD w/ 1 kΩ 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, 100mV @ Pre-out, w/ 80 kHz LPF, 1kHz)
≤
0.2 %
MAX VOL PLII Music mode, 1kHz, 1Vp-p, CD in, ≥ 40 dB
NOISE connect to T775 Ext 7.1, measure at T775
Spk out, with ref. to 1W S/N (L,R,C,SL,SR)