Nad 7020E Users Manual
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2015-02-05
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7020e Stereo Receiver Date of manufacture : ? - Dec 89 Please note that this document contains the text from the original product brochure, and some technical statements may now be out of date NAD’s product philosophy can be characterised in one phrase: “high-value engineering.” The compact and economical 7225PE receiver is an outstanding example of that approach; it contains much of the same circuitry as the 7240PE, with less output power and a substantial saving in cost In budget-level stereo receivers, performance and power often are compromised to reduce production cost. But NAD combines high production efficiency with superior performance by using the same circuits in both separates and receivers. The 7225PE contains the entire 3225PE integrated amplifier plus a sensitive, wide-range digital tuner. The 7225PE is conservatively rated at 25 watts/ channel of steady-state power for sine-wave test tones But with +4 dB of IHF dynamic headroom, its effective power for musical transients is considerably greater. Power Envelope design produces bursts of up to 60 watts/channel at 8 ohms and 8 0 watts/channel at 4 or 2 ohms, ensuring clear and authoritative reproduction of the impact and sparkle of live music. If you ever overdrive the 7225PE, Soft Clipping™ will prevent the harshness and gritty distortion that is caused by hard clipping in conventional amplifiers. NAD’s impedance selector allows optimum performance to be delivered into any speaker impedance The 7225PE produces up to 15 amperes of peak current, delivering full power to impedances as low as 2 ohms. The quiet phono stage and wide-range line-level circuits, like those in the 7240PE, transparently reproduce even the subtlest detail of every recorded sound. Infrasonic and ultrasonic filters eliminate unwanted interference while preserving accurate response from 20 Hz to 20 kHz. Musically effective tone controls adjust the deep bass and high treble without sacrificing clarity or midrange accuracy Radio is not just for background music, and tuner performance should not be compromised. The 7225PE employs much of the same highly-evolved technology as the NAD 4225 tuner. A sensitive MOSFET front end, three stages of I. F. filtering, and a PLL multiplex decoder for wide stereo separation, provide an optimum combination of good selectivity and low distortion. In side-by-side comparisons with other receivers, the 7225PE often pulls in weak or difficult stations with noticeably better clarity and quieting. NAD 7020 e Stereo Receiver The 7020e, NAD’s lowest cost receiver, is similar to the 7225PE in features and performance, except that it is based on the 3020i integrated amplifier. It is rated at 20 watts per channel of steady-state power with +3 dB of IHF dynamic headroom, meaning that in musical transients it produces up to 40 watts/channel of dynamic power at 8 or 4 ohms The 7020e shares with all NAD amplifiers and receivers a high-current output stage that, when playing music instead of test tones, delivers full power to speakers of any impedance. Its combination of dynamic power, Soft Clipping™, and unconstricted output current give the 7020e a characteristic ability to drive even “difficult” speakers to unexpectedly high volume levels. In addition to its surprisingly potent speaker-driving ability, the 7020e contains the same quiet phono circuitry, sensitive digital tuning, wide stereo separation, sharp audio-bandpass filtering, and musically useful tone controls that larger NAD receivers employ. The 7020e is a no-compromise product, characterised by the high-value engineering that stands behind every NAD product. PRE-AMP SECTION Phono input Input impedance (R and C) Input sensitivity, 1kHz Signal/Noise ratio (A-weighted with cartridge connected) THD (20Hz - 20kHz) RIAA response accuracy (20Hz - 20kHz) 47kΩ / 100pF 2.4mV ref. 20W 75dB ref. 5mV <0.04% ±0.5dB Line level inputs Input impedance (R and C) Input sensitivity (ref. 20W) Maximum input signal Signal/Noise ratio (A-weighted ref 1W) Frequency response (20Hz - 20kHz) Infrasonic filter 40kΩ / 100pF 150mV >10V 84dB +0.5dB, -1.0dB -3db at 15Hz, 24dB/octave Line level outputs Output impedance Tape Phones Tape Phones Maximum output level Tone controls Treble Bass ±7dB at 10kHz ±10dB at 50Hz POWER AMP SECTION Continuous output power into 8Ω * Rated distortion (THD 20Hz - 20kHz) Clipping power (maximum continuous power per channel) IHF Dynamic headroom at 8Ω IHF dynamic power (maximum short term power per channel) 8Ω 4Ω 2Ω Damping factor (ref. 8Ω, 50Hz) Input sensitivity (for rated power into 8Ω) FM TUNER SECTION Input sensitivity Source Z + 1kΩ 220Ω 10V >10V into 600Ω >500mV into 8Ω Mono -30dB THD+N Mono 30dB S/N Stereo 50dB S/N Stereo 60dB S/N 20W (13dBW) 0.03% 25W +2.5dB 35W (15.5dBW) 35W (15.5dBW) 50W (17dBW) >30 900mV Frequency response ±0.5dB Channel separation at 1kHz 11.3dBf (2.0µV/300Ω) 15dBf (3.0µV/300Ω) 37dBf (40µV/300Ω) 47dBf (120µV/300Ω) <1.5dB >60dB 58dB 70dB 90dB 0.1% 0.1% >80dB >74dB 30Hz - 15kHz 45dB AM TUNER SECTION Usable sensitivity Selectivity Image rejection I F rejection Signal/Noise ratio Harmonic distortion 5µV 30dB 45dB 35dB 45dB 0.5% Remote NAD Link No No PHYSICAL SPECIFICATIONS Dimensions (W x H x D) Net weight Shipping weight Power consumption (120 ~ 240V, 50/60Hz) 420 x 91x 273mm 5.5kg 6.8kg 150W Capture ratio (45 - 65dBf) AM rejection (45 - 65dBf) Selectivity, alternate channel Image rejection I F rejection Harmonic distortion Signal/Noise ratio * Minimum power per chnnel, 20Hz - 20kHz, both channels driven with no more than rated distiortion. Dimensions are of unit’s cabinet without attached feet; add up to 18mm for total height. Dimension depth excludes terminals, sockets, controls and buttons. © NAD Electronics. All rights reserved. E & OE Mono Stereo Mono Stereo
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