NAD 7155 - Specifications; Power Amplifier Section; Bridged Monophonic Mode

SPECIFICATIONS
NOTE: Measurements referenced to 8 ohms are taken with the Speaker Impedance Selector set to “8 ohm (High).
Measurements for 4 and 2 ohms are taken with the impedance selector at ‘4 ohm (Normal)’’. Specifications
are measured in accordance with EIA Standard RS-490 (IHF A-202) for amplifiers and ANSI-IEEE Standard
185 (1975) (IHF T-200) for tuners, Tuner sensitivity is measured via 75 ohm coaxial input and converted to
equivalent 300 ohm values.
Power Amplifier Section, Stereo Mode
CONTINUOUS AVERAGE POWER OUTPUT INTO 8 OHMS
(min. RMS power per channel into 8 ohms, 20 Hz - 20 kHz,
both channels driven, with no more than the rated distortion).
Rated distortion (THD), 20 Hz - 20 kHz.
Clipping power (max. continuous power per channel). 8 ohms:
4 ohms:
IHF dynamic headroom at 8 ohms.
IHF dynamic power (max. short-term power per channel).
8 ohms:
4 ohm:
2 ohms:
Slew factor.
Slew rate.
Damping factor (ref. 8 ohms, at 50 Hz).
Input impedance.
Input sensitivity for 1 W/55 W out.
Power amp. gain.
THD (Total Harmonic Distortion, 20 Hz - 20 kHz, from
250 mW to rated output).
SMPTE I.M. (Intermodulation Distortion 60 Hz : 7 kHz,
4:1, from 250 mW to rated output).
IHF I.M. (CCIR IM Distortion, 19 to 20 kHz at rated output).
Bridged (Monophonic) Mode
CONTINUOUS AVERAGE POWER OUTPUT INTO 8 OHMS
(min. RMS power into 8 ohms, 20 Hz - 20 kHz, with no more
than the rated distortion).
IHF Dynamic Headroom at 8 ohms.
Dynamic power (max. short-term output, 8 ohms).
All versions except USA.
55 W (17.4 dBW)
0.03 %
65W
75 W
+2.6dB
100 W
100 W
130 W
> 50
20 V/usec.
> 50
22 k ohms.
0.13 V/0.95 V
26.8 dB.
< 0.03 %
< 0.03 %
<0.03 %
125 W (21 dBW)
+2.5dB
250 W
USA version only.
55 W (17.4 dBW)
0.03 %
75W
90W
+3dB
110 W
130 W
150 W
150 W (22 dBW)