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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





Sherwood S-9500 amplifier

Sherwood  S-9500 50 watt all silicon Integrated Transistor Amplifier

 


 Specifications

Power Output: 

Stereo Each channel 25 watts music power (20 watts continuous) at 1,5% Intermodulation Distortion (60 c:7 kc/4:1)

Outputs:  4 to 16 Ω  left and right spkr, stereo headphone and record output)

Damping Factor:  15:1 at 8 Ω 

Inverse Feedback:  45 dB

Frequency Response:   20 Hz to 20,000 Hz ±1 dB

Tone Control Response:  Flat Setting 20 Hz to 20 kHz ±1 dB

Tone Control Range: 

15 kHz :  15 dB boost or cut

40 Hz :  16 dB boost or cut

Preamp Equalizer Curves:  AES/RIAA Phono and NAB Tape

Sensitivity:

Radio :  0,25 V

Phono :  1,8 mV

Tape :  0,8 mV (PH and TP inputs are adjustable with Phono Gain control)

Max. Input Capability:

Phono :  35 mV for less than 1% dist.

Radio :  2,8 V for less than 1% dist.

Max. Hum and Noise: 

Vol. Control min. 90 dB (weighted) below rated output.

Tuner input (controls max.) 80 dB (weighted) below rated output.

Phono input (controls flat), 70 dB , below rated output

Interchannel Crosstalk:  better than -45 dB, at 1 kHz

Transistor Complement:  20 silicon transistors; 2 silicon rectifiers

Power Consumption:  10 - 100 watts fused (115 - 125 V, 60 Hz)

Dimensions (W x H x D):  12,5" x 4 x 11"

Weight:  20 lbs (shipping)

Inputs:  6 high level (2 tape monitor), 2 (RIAA) phono-preamp, 2 (NAB) tapehead preamp


 

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