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





Denon POA-800 power amplifier

Stereo-Monaural Power Amplifier

 

 

Specifications

Rated Power Output

Stereo

50 W per channel, min. RMS, at 8  from 20 Hz to 20 kHz with no more than 0,05% T.H.D.

90 W + 90 W (4 , 1khz, T.H.D. 1%)

Monaural

120 W channel, min. RMS, at 8  from 20 Hz to 20 kHz with no more than 0,08% T.H.D.

150W (4 , 1khz, T.H.D. 1%)

Dynamic Power

Stereo

130 W + 130 W at 4

150 W +150 W at 2

Monaural

180 W at 4

190 W at 2

Total Harmonic Distortion (-3 dB at rated output , 8 ) 

Stereo :  less than 0,008%

Mono :  less than 0,007%

Intermodulation Distortion (60 Hz/7 kHz : 4/1 at rated output , 8 )

Stereo/Mono :  less than 0,03%

Power Bandwidth:  10 Hz - 50 kHz (8 , T.H.D. 0,1%)

Frequency Response:  1 Hz - 100 kHz +0 -3 dB at 1 W

Input Sensitivity/Impedance: 

Stereo :  1 V/ 25 k

Mono :  0,85 V/ 25 k

Output Impedance:  0,1  (1 kHz)

Signal-to-Noise Ratio (A weighting)

Stereo :  120 dB

Mono :  114 dB

Output Terminals

Speakers :  4  Min.

Power Requirements:  AC 110, 120, 220, 240 V 50/60 Hz

Power Consumption: 150 - 160 W (3 A in USA, Canada)

Dimensions (W x H x D):  434 x 120 x 300 mm

Weight:  6,8 kg


 

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