NAD
67
Power Amplifier Section (Stereo Mode)
CONTINUOUS AVERAGE POWER OUTPUT INTO 8
25W (14 dBW)
(Min. power per channel, 20Hz-20kHz, both channels driven, with no more than rated distortion)
Rated distortion (THD 20Hz-20kHz)
0.03%
Clipping power (maximum continuous power per channel)
40W
IHF dynamic headroom at 8
+4dB
IHF dynamic power
8
:
60W (18dBW)
(maximum short term power/channel)
4
:
85W (19W)
2
:
90W (19.5dBW)
Damping factor (ref. 8
50Hz)
>50
THD + SMPTE + IHF I.M. (from 250mV to rated output)
<0.03%
Input impedance
20k
+ 820pF
Input sensitivity (for rated output into 8 )
1V
Signal/Noise ratio, A weighted
ref. 1 W
100dB
ref. rated power
114dB
Frequency response
12Hz-45kHz (-0, -3dB)
Preamplifier Section - Phono Input
Input impedance (R and C)
47k
+ 250pF
Input sensitivity
ref rated power 1kHz
2.5mV
Input overload at 20Hz/1kHz/20kHz
20/200/1700mV
Signal/Noise ratio (A-weighted with cartridge connected)
ref. 5mV
75dB
THD (20Hz-20kHz) and IM dist.
<0.04%
RIAA response accuracy
±0.5dB
Line Level Inputs (CD, Video, Tape , Aux)
Input impedance (R and C)
15k
+ 300pF
Input sensitivity
ref. rated output
160mV
Max. input signal
>10V
Signal/Noise ratio, A-weighted
ref. 1W
87dB
ref. rated power
101dB
Frequency response, 20Hz-20kHz
+0.5dB, -1.0dB
Infrasonic filter (fixed)
-3dB at 12Hz
18dB/octave
Line Level Outputs
Output impedance
Pre Out
220
Tape Source
Z - 2k
Maximum output level
Pre Out
>12V
Tape out
>10V
Controls
Bass
±7dB at 10kHz
Treble
±10dB at 50Hz
FM Tuner Section
Input sensitivity
Mono, -30dB THD+N
11.5dBf (1.0µV/75 )
Mono, 50dB S/N
15dBf (1.5µV/75 )
Stereo, 50dB S/N
37dBf (20µV/75 )
Stereo, 60dB S/N
47dBf (60µV/75 )
Capture ratio (45 to 65dBf)
<1.6dB
AM rejection (45 to 65dBf)
>60dB
Selectivity
Alternate channel
58dB
Adjacent channel
Image rejection
>70dB
I.F. rejection
>90dB
Subcarrier suppression (19 and 38kHz)
>60dB
THD at 100% modulation
Mono, 1kHz
<0.1%
100Hz-6kHz
<0.2%
Stereo, 1kHz
<0.1%
100Hz-6kHz
<0.3%
Signal/Noise ratio (at 65dBf, IHF weighted)
Mono
>80dB
Stereo
>74dB
Frequency response, 30Hz-15kHz
±0.5dB
Stereo separation
1kHz
>45dB
30Hz-10kHz
>35dB
AM Section
Usable sensitivity
5µV
Selectivity
30dB
Image rejection
45dB
I.F. rejection
35dB
Signal/Noise ratio (30% modn., 50mV input)
45dB
THD
0.5%
Physical Specifications
Dimensions in mm (Width x Height x Depth)
435 X 91 X 273
Net Weight
6kg
Shipping Weight
7.1kg
SPECIFICATION – NAD 712 STEREO RECEIVER