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What is stereo?




There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.



H.H. Scott '59





Rotel RX-402 receiver

AM/FM Stereo Receiver

The RX-402, if the spirit moves you toward something special. It'll take you there.

You can't beat the big quality advantages the RX-402 AM/FM Stereo Receiver adds to Rotel's existing line-up of performance equipment. It's versatile for sure, you can add it confidently to an existing stereo system, or you can use it for starters and build a living room system around it. Whichever, it's been engineered throughout to take you in the direction of something very special, which we'd like to call a solidly satisfying world of stereo, this is what stereo should be-and this the way we've mixed and matched all the advanced electronics in the RX-402 so it comes out that way.

 


High Performance Sound- Oriented Tuner

We don't mean shallow words when we say high performance sound-oriented tuner. We mean things more substantial like an FM FET front end for outstanding sensitivity with very low distortion and excellent rejection characteristics. We mean ceramic filters and integrated circuitry in the FM IF section for stability and selectivity. We mean the things that mean high performance.

Extra Wide Linear FM Dial Scale

The extra width of the linear FM dial scale is that something extra that's standard on all Rotel receivers. It makes for easy, precise tuning on the easy-to-see vernier scale.

Large Dual Function Tuning Meter and Large Tuning Knob

Clear indication of signal strength, and center tuning make for exacting accuracy, and so does the smooth flywheel action of the over-size tuning knob.

Advanced PLL-MPX for Improved Stereo Separation

Stereo separation isn't an abstract term created to confuse you. It's something very real, and you've got to compare the good with the bad to really get your teeth into it. Rotel makes it good , with PLL integrated circuitry and other improved circuitry in the MPX section. And in addition to effective separation over a wide frequency range, this circuitry also means excellent frequency response with distortion so low it's negligible.

 

High-power low-distortion power amp

The RX-402 gives you a split power supply and all directly coupled OCL circuitry with low-noise silicon transistors used throuhout for superb output; 20 W / 20 W RMS continuous power into 8 ohms at less than 0,5% T.H.D. both channels driven from 20 Hz to 30 kHz.

Electronic Protection Circuit

This is automatic resettable protection circuitry that protects your speaker system from overload. It's also protection for electronic components in DC circuits.

 


Specifications

Amplifier Section

Music Power Output (IHF) :  110 W (4 Ω )

Continuous Power Output (RMS, each Channel Driven) :  36 W / 36 W (4 Ω ); 28 W / 28 W (8 Ω )

Continuous Power Output (RMS, both Channels Driven) :  26 W / 26 W (4 Ω ); 24 W / 24 W (8 Ω ); 20 W / 20 W (8 Ω , from 20 to 20,000 Hz at less than 0,5% T.H.D.)

Harmonic Distortion:  less than 0,15% (18 W/18 W RMS)

Intermodulation DIstortion :  less than 0,2% (18 W/18 W RMS)

Power Bandwidth (IHF):  5 to 50,000 Hz (8 Ω )

Frequency Response:  10 to 75,000 Hz ±3 dB

Damping Factor:  30 (8 Ω , 1 kHz)

Input Sensitivity/Impedance:

Main IN :  580 mV/ 35 k Ω

Tape Monitor :  125 mV / 15 k Ω

Aux :  125 mV / 22 k Ω

Phono :  2 mV / 60 k Ω

Tape Output:  340 mV/ 5 k Ω

Phono Overaload:  85 mV (1 kHz)

Phono Equalization:  RIAA standard ±1 dB

Controls

Bass :  ±10 dB at 100 Hz

Treble :  ±10 dB at 10 kHz

Loudness Contour:  ±8 dB/100 Hz =5 dB/10 kHz

Crosstalk:  50 dB

Hum and Noise (Continuous Power Output)

Phono :  65 dB

Tape :  80 dB, Residual 0,5 mV

Speaker Impedance:  4 to 16 ohms

FM Tuner Section

Frequency Range:  88 to 108 MHz

Sensitivity (IHF):  2,0 microvolts

Signal-to-Noise Ratio :  67 dB

Harmonic Distortion:  0,2%

Selectivity:  70 dB ±400 kHz

Capture Ratio:  2 dB

Stereo Separation:  35 dB at 1 kHz, 30 dB at 10 kHz

IF Rejection:  80 dB

Image Rejection:  60 dB

Spurious response rejection:  70 dB

SCA Suppression:  70 dB

AM Suppression:  55 dB

AM Tuner Section

Frequency Range:  525 to 1650 kHz

Sensitivity:  20 microvolts

Selectivity:  30 dB

IF Rejection:  45 dB

Image Rejection:  50 dB

General

Power Requirements:  Ac 100, 120, 220, 240 V, 50/60 Hz

Power Consumption:  200 W max

Dimensions (W x D x H):  18-5/8" x 13" x 4-1/2"

Weight:  7 kg (15 lbs)


 

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