| | | | NRPavs Oldies but Goodies NAD 7225PE [4th unit] stereo receiver details |
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| NAD 7225PE [4th unit] stereo receiver - charcoal grey : 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 25watts / 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 60watts / channel at 8 ohms and 80 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 20Hz to 20kHz. 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 Specifications : -:®:- Vintage : 1988 model PRE-AMP SECTION : -:®:- Phono input : Input impedance (R and C): 47k ohm / 100pF -:®:- Input sensitivity [1kHz] : 2.5mV ref. 25W -:®:- Signal to Noise ratio (A-weighted with cartridge connected) : 75dB ref. 5mV -:®:- THD (20Hz to 20kHz) < 0.04% RIAA response accuracy [20Hz to 20kHz] : ±0.5dB Line level inputs : Input impedance (R and C) 40k ohms / 100pF -:®:- Input sensitivity [ref. 25W] : 160mV -:®:- Maximum input signal : > 10V -:®:- Signal to Noise ratio [A-weighted ref 1W] : 85dB -:®:- Frequency response [20Hz to 20kHz] : +0.5dB, -1.0dB -:®:- Infrasonic filter : -3db at 15Hz, 24dB/octave -:®:- THD : 0.01% Line level outputs : Output impedance : Pre-amp 600 ohms Tape Source Z + 1k ohms Phones : 220ohms -:®:- Maximum output level : 12V Tape : 10V Phones > 10V into 600ohms, > 500mV into 8ohms Tone controls : Treble : ±7dB at 10kHz Bass : ±10dB at 50Hz POWER AMP SECTION : -:®:- Continuous output power into 8 ohms 25 Watts (14dBW)at rated distortion :(THD 20Hz to 20kHz) : 0.03% -:®:- Clipping power [maximum continuous power per channel] : 40W -:®:- IHF Dynamic headroom at 8 ohms : +4dB -:®:- IHF dynamic power [maximum short term power per channel] : 8 ohms 60W (18dBW), 4 ohms 85W (19dBW), 2 ohms 90W (19.5dBW) -:®:- Damping factor [ref. 8 ohms, 50Hz] : > 50 -:®:- Input impedance : 20k ohms / 820pF Input sensitivity (for rated power into 8 ohms) : 1V -:®:- Frequency response : 12Hz to 45kHz +0dB, -3dB -:®:- Signal to noise ratio [ref. 1W] : 100dB ref. rated power : 114dB with THD (20Hz to 20kHz) < 0.03% FM TUNER SECTION : -:®:- Input sensitivity : Mono -30dB THD + Noise : 11.3dBf [2.0μV / 300ohms] -:®:- Mono 30dB S/N : 15dBf [3.0μV/300ohms] Stereo 50dB S/N : 37dBf [40μV/300ohms] -:®:- Stereo 60dB S/N : 47dBf [120μV/300ohms] -:®:- Capture ratio [45dBf to 65dBf] : < 1.5dB -:®:- AM rejection [45dBf to 65dBf] : > 60dB -:®:- Selectivity, alternate channel : 58dB Image rejection : 70dB IF rejection : 90dB -:®:- Harmonic distortion : Mono 0.1% Stereo 0.1% -:®:- Signal to Noise ratio : Mono > 80dB Stereo > 74dB -:®:- Frequency response [±0.5dB} : 30Hz to 15kHz Channel separation at 1kHz : 45dB AM TUNER SECTION : -:®:- Usable sensitivity : 5μV Selectivity : 30dB Image rejection : 45dB IF rejection : 35dB -:®:- Signal / Noise ratio : 45dB Harmonic distortion : 0.5% -:®:- Remote : No NAD Link : No -:®:- Dimensions [W x H x D]: 420 x 91x 273mm Weight : 5.5kg, packed weight: 7kg SOLD January 2024 on trademe to Tauranga |
each extra 5kg : add $6.00 NI, $11.80 SI Auckland @ $7.75 $13 North Island @ $12.35 $18 South Island: < 2kg @ $6.95 NA South Island: < 10kg @ $21.25 $27 |
CASH on delivery by arrangement : Northland, Auckland buyers By bank payment : 12-3061-0161709-00 ASB name: N R PARKIN By credit card : Use  option on trademeBy email with secure  PayPal payment : select the Pay using PayPal website link |
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