NAD 7240PE دليل المستخدم

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7240PE Stereo Receiver
Date of manufacture : ? - Nov 89
Please note that this document contains the text from the original product brochure, and some technical statements may now be out of date
The 7240PE receiver consists of the 3240PE integrated amplifier, with its vast reserves of clean, solid
power for the the wide dynamic range of modern recordings, plus an exceptionally sensitive digital
tuner.
Power Envelope design
While the 7240PE is rated at 40 watts/channel of steady-state power, its +

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Precise digital tuning The tuner section of the 7240PE features sensitive dual-gate MOSFET front-end, a three-stage linear- phase I.F. circuit for sharp selectivity, a low-distortion quadrature detector, and a phase-compensated PLL multiplex decoder with wide stereo separation at all frequencies. Special filtering minimises interference from SCA and RDS sub-carriers. FM NR NAD’s unique FM noise-reduction circuit eliminates much of the noise and distortion in weak FM stereo signals, a welcome imp

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PRE-AMP SECTION Phono input Input impedance (R and C) 47kΩ / 100pF Input sensitivity, (1kHz, ref. rated power) 3.2mV Signal/Noise ratio (A-weighted with cartridge connected) 76dB ref. 5mV THD (20Hz - 20kHz) <0.04% RIAA response accuracy (20Hz - 20kHz) ±0.5dB Line level inputs Input impedance (R and C) 15kΩ / 100pF Input sensitivity (ref. rated power) 160mV Maximum input signal >10V Signal/Noise ratio (A-weighted ref 1W) 88dB Frequency response (20Hz - 20kHz) ±0.5dB Infrasonic filter -3db at 15H

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FM TUNER SECTION Input sensitivity Mono -30dB THD+N 10.3dBf (1.8μV/300Ω) Mono 30dB S/N 14.2dBf (2.8μV/300Ω) Stereo 50dB S/N 36dBf (34μV/300Ω) FM NR off 29dBf (16μV/300Ω) FM NR on Stereo 60dB S/N 46dBf (110μV/300Ω) FM NR off 40dBf (56μV/300Ω) FM NR on Capture ratio (45 - 65dBf) <1.5dB AM rejection (45 - 65dBf) >60dB Selectivity, alternate channel 65dB Image rejection 70dB I F rejection 90dB Harmonic distortion Mono 0.09% Stereo 0.09% Signal/Noise ratio Mono >80dB Stereo >75dB Frequency response ±