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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





Akai AA-6600 receiver

Solid State AM/FM Multiplex Stereo Tuner Amplifier

Outstanding Features

FET (Field Effect Transistor) front-end for extra FM sensitivity

IC (Integrated Circuit) in IF stages for high selectivity

120 W (60 W/ 60 W) music power

FM-AM signal strength meter and FM center tuning master for perfect tuning

Automatic FM stereo/monaural switching; FM reception is automatically switched from mono to stereo or from stereo to mono

Speaker system selector for handling one or two stereo speaker systems individually or simultaneously (System A, System B, Systems A+B and Off)

Tape monitor Switch, Stereo mode switch

Bass, Treble and Loudness control

Low and High filter

Stereo headphone jack, DIN jack

 


Specifications

Amplifier Section

Power Output

Music Power (IHF):

120 W (60 W/60 W) at 4 Ω 

100 W (50 W/50 W0 at 8 Ω 

Continuous Power:75 W (37,5 W/37,5 W ) at 8 Ω

Total Harmonic Distortion :   0,8% at rated output

Power bandwidt (IHF):  20 - 30.000 Hz at 8 Ω

Frequency Response (at Normal Listening Level)

Power Amplifier :  20 - 50,000 Hz -3 dB

Aux :  20 - 50,000 Hz -3 dB

Input Sensitivity (for rated output):

Phono :  3 mV

Aux :  200 mV

Tape Monitor :  200 mV

Recording Output

Pin Jack :  200 mV

DIN :  30 mV

Hum and Noise (below rated output):

Volume Minimum :  better than 80 dB

Phono :  better than 65 dB

Aux :  better than 70 dB

Channel Separation (at rated output)

Phono :  better than 50 dB

Aux :  better than 50 dB

Output Impedance:  4 - 16 Ω

Equalizer Phono :  RIAA

Tone Controls

Bass :  ±10 dB at 50 Hz

Treble :  ±10 at 10 kHz

Loudness :  +6 dB at 100 Hz, +3 dB at 10 kHz (volume control at -30 dB)

Low Filter:  -8 dB at 50 Hz

High Filter:  -6 dB at 10 kHz

Mode Switch:  Stereo/Mono

FM Tuner Section

Frequency Range:  88 - 108 MHz

Sensitivity:  2 µV (IHF)

T.H.D.  : less than 0,8%

Signal-to-Noise Ratio:  better than60 dB

Selectivity:  better than 50 dB at 98 MHz

Capture Ratio:  2 dB (IHF)

Image Frequency Rejection:  better than 60 dB at 98 MHz

IF Rejection:  better than 90 dB at 98 MHz

FM Stereo Separation:  better than 35 dB at 1 kHz

Spurious Response Rejection:  better than 60 dB at 98 MHz

Spurious Radiation:  less than 34 dB

Antenna Input/Impedance:  300 Ω  (balanced) 75 (unbalanced)

AM Tuner Section

Frequency Range:  535 -1,606 kHz

Sensitivity (IHF):  20 µV at 1 MHz

Image Frequency Rejection:  better than 50 dB at 1 MHz

Selectivity:  better than 20 dB at 1 MHz

Semiconductors: 

Transistors / FET / ICs :  Tr. 33; FET 1; IC 1

Diodes :  ZD 1; Di 22

Varistors :  2

Power Requirements:  100 - 240 Volts 50/60 Hz

Power Consumption:  150 W (max)

Dimensions (W x H x D):  445 x 133 x 340 mm (17-1/2" x 5-1/4" x 13-3/8")

Weight:  11 kg (24,4 lbs)


 

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