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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





JVC JA-S11 amplifier

 

Features:

30 watts per channel , minimum RMS, both channels driven, into 8 ohms, from 20 Hz to 20 kHz with no more than 0,1% Total Harmonic Distortion

Two-Deck Dubbing and Tape-2 terminals on front panel

Class-A Phono Equalizer

If you want an easy-to-operate amplifier with  perfect performance, the JVC JA-S11 is the one to hear. Weve stripped off all the frills, retained ony useful features like two-deck and two-speaker-pair connection facilities. Moreover, since it's a JVC we've msde doubly sure it meets super hi-fi performance requirements to bring you Closer to the Musical Truth. The JVC JT-V11 is its matching tuner.

Direct-Coupled OCL Design

Like our more expensive models, the power amplifier of the JA-S11 features a direct-coupled OCL (Output Capacitor-Less) fully complementary design. Since signals are amplifies and sent out to conected speakers directly, reproduction is clean, clear and dynamic.

Class-A Phono Equalizer

JVC's sound policy is that all amplifiers (or amplifier stages inside an integrated amplifier) except the final power output should be of the Class-A configuration. This configuration keeps distortion low for more pleasing musical sonority of particular importance in phono equalizers where delicate and minute signals are handled. Superb specifications of the JA-S11 include ±0,5 dB RIAA accuracy and 150 mV phono overload capability (RMS).

Tape-2 terminals Up Front

Every one of JVC's new lineup amplifiers features two-deck connection and Tape-2 terminals up front. What are the advantages of this JVC facility? One is that you can connect two tape decks and dub from any of the two  to the other. Another is that you can undertake dubbing while enjoying other programs, such as records and radio broadcasts. The third is that you don't need to reach into the back of the unit to connect equipment for temporary use (portable decks, etc.)

Two Speaker-Pair Connection

This is a JVC feature you'll appreciate if you have one set of speakers in your listening room and another in the adjoining room, since it lets you enjoy music in both rooms simultaneously. An unusual array of controls- Bass/ Trebble. Tone , etc. - fill out the key features of this easy-to-afford stereo integrated amplifier.

 


Specifications:

Power Amp Section

Output Power (both channel driven): 

30 watts per channel (RMS into 8 Ω , 20 Hz - 20 kHz, 0,1% T.H.D.)

33 watts per channel ( into 8 Ω , at 1khz , 0,1% T.H.D.)

Total Harmonic Distortion (at 30 W , both channel driven):  0,05% at 1 kHz

Intermodulation Distortion:  0,1% at rated output

Load Impedance: 

4 Ω  - 16 Ω  ( system -1 or system-2)

8 Ω  - 16 Ω  (system-1 + system-2)

Damping Factor:  more than 30 at 8 Ω  (20 Hz -20 kHz)

Pre-Amplifier Section

Input Sensitivity/Impedance

Phono :  2,5 mV/ 47 k Ω

Aux, Tape, Tuner:  150 mV/50 k Ω

Output Level:

Tape Rec -1, -2:  150 mV

DIN Rec :  30 mV

Phono Equalizer Deviation:  ±0,5 dB from RIAA curve (25 Hz - 15 kHz)

Phonoo Overload:  150 mV (RMS) at 1 kHz, 420 mV (P-P)

Signal-to-Noise Ratio: 

Phono :  65 dB

Aux :  85 dB

Frequency Response:  25 Hz - 40 kHz  +0 -1 dB

Loudness Control:  +6 dB at 100 Hz +4 dB at 10 kHz

Tone Controls:

Bass :  ±8 dB at 100 Hz

Treble :  ±8 dB at 10 kHz

Power Source: 110V, 120 V, 220 - 240 V 50/60 Hz

Power Consumption:  235 watts

Dimensions (W x H x D):  390 x 152 x 330 mm (15-11/32" x 5-3/32" x 13")

Weight:  7 kg (15,4 lb)

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