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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





Harman/Kardon HK570i receiver

Ultrawideband Linear Phase Stereo Receiver

For a medium priced receiver, the hk570i gives you better sound and more features than other comparably priced receivers.

It starts with a full 45 watts per channel, with instantaneous current capability up to 35 amps under peak demands. Our 5-level signal strength meter and station lock beacon help make sure you're always tuned accurately. The Auto FM feature automatically shifts the receiver into the mono mode when signals are so weak that stereo reception is poor. And all tone controls are defeatable, for the clearest cleanest, most distortion-free reproduction possible.

The hk570i also provides convenience features you 'll appreciate. Like tape copy functions and monitoring capabilities for two decks. Plus a subsonic filter, and a high cut filter that help eliminate surface noises from records.

The hk570i, perhaps the best combination of price  and performance on the market

 


Specifications

Amplifier Section

RMS Power Output (into 8 Ω  , 20-20,000 Hz):  45 watts (at less than 0,02% T.H.D.

Frequency Response (at rated output):  below 1 Hz - 150 kHz (-3 dB)

Intermodulation Distortion (at rated output):  ,06%

TIM Distortion (at rated output):  ,01%

Slew Rate/Power Amplifier:  60 volts/µsec

Overall Negative Feedback:  25 dB

Hum and Noise (A-weighted):

Phono :  -88 dB

Aux :  -100 dB

Residual :  -100 dB

Phono Overall:  >150 mV

Tuner Section

FM Sensitivity MONO:  2,0 µV

50 dB Quieting Sensitivity

Mono :  3,1 µV

Stereo :  37 µV

FM Noise:  -75 dB

Capture Ratio:  1,3 dB

Alternate Channel Selectivity:  -70 dB

Stereo Separation (1 kHz):  50 dB

FM Frequency Response at Detector Output:  DC -60 kHz (-3 dB)

AM Sensitivity:  300 µV/m

Dimensions (W x H x D):  440 x 122 x 368 mm

Weight:  9,54 kg

 

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