Nad 2200 User Manual download pdf

2200

Power Amplifier

Date of manufacture : Jan 87 - Feb 89

Please note that this document contains the text from the original product brochure, and some technical statements may now be out of date

Reproducing musical signals, the NAD 2200 routinely delivers over 500 watts per channel into typical

loudspeaker impedances.

In actual measurement with speakers of complex impedance and lower-than-average sensitivity, the

2200 produces peak sound pressure levels exceeding 115 dB SPL(Sound Pressure Level) in a medium to

large room, with no audible or measurable distortion.

But in size, heat dissipation, and cost, the NAD 2200 is similar to many other amplifiers rated at only

100 watts per channel. For audiophiles who can use and appreciate its capability, the 2200 is

unquestionably the best-buy power amplifier ever manufactured.

The Key: Real-World Design

Examined from one perspective, the 2200 is a very conservatively rated 100 watts/channel power

amplifier that has an extraordinary +6 dB of dynamic headroom, meaning that it can produce more than

four times its rated power during musical transients.

Looked at another way, the 2200 is a super-amplifier that produces between 400 and 800 watts per

channel for music (depending on speaker impedance), but contains an “intelligent” power supply that

gives it the modest size, heat dissipation, and cost of a conventional 100 W/ch amplifier.

The key to the design of the 2200, as with all NAD amplifiers, is that its design goes beyond

conventional specifications and laboratory tests to provide optimum performance under the conditions

of everyday use, NAD amplifiers are designed, first and foremost, to reproduce the dynamically varying

waveforms of music-not just sine-wave test tones. They are designed to deliver undistorted power to

loudspeakers of any impedance-not just to an 8-ohm test resistor. NAD’s engineers have always

recognised the importance of supplying high levels of output current to drive the low and complex

impedances of real loudspeakers. NAD premiered the use of Soft Clipping™ in solid-state amplifiers to

prevent harsh distortion when the demands of the musical signal exceed the amplifier’s limit. All NAD

amplifiers feature high dynamic headroom for the transient sounds in music.

The NAD 2200 is a truly “dynamic” power amplifier. Its heart is the unique PowerTracker control circuit

(patent pending), which automatically adjusts the amplifier’s maximum power output according to the

dynamic character of the signal that is being amplified. As befits a product designed for the

reproduction of music, the NAD 2200 achieves its maximum power output of 400 to 800 watts per

channel when amplifying wide-range musical signals that contain peaks IO to 20 dB above the average

level. But when the amplifier is fed a high and constant signal (i.e. a sine-wave test tone instead of a

musical waveform), its maximum output automatically declines to avoid overheating, and eventually

levels out between 100 and 200 watts per channel.

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Summary of Contents

Page 1 - Power Amplifier

2200 Power AmplifierDate of manufacture : Jan 87 - Feb 89Please note that this document contains the text from the original product brochure, and some

Page 2

The 2200 virtually redefines the concept of dynamic head-room.Its high power reserves are available, not only for the short 20-millisecond bursts used

Page 3

“Audible Clipping” IndicatorTo enable the user to make the fullest use of the dynamic power of the 2200, a front-panel “Overload”LED indicator illumin

Page 4

(2) The 2200 does not abruptly switch from one supply to the other. The output stage is permanentlyconnected to the lower-voltage supply. The commutat

Page 5 - (120 ~ 240V, 50/60Hz) 770W

POWER AMP SECTIONContinuous output power into 8Ω * 100W (20dBW)Rated distortion (THD 20Hz - 20kHz) 0.03%Clipping power (maximum continuous power per c

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Nad 2200 User Manual

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