JVC JA-S44 amplifier

 

Features:

DC Power Amplifier in ICL Construction

45 Watts per Channel, Minimum RMS, both channels driven, into 8 ohms, from 20 Hz to 20 kHz with no more than 0,02% T.H.D.

S.E.A. Stereo Graphic Equalizer

Direct Readout Twin Power Meters

JVC Triple Power Protection

Twin Power Meters

 

Convenience and musical accuracy are the key features of this medium-priced, high-performance amplifier. With the JVC S.E.A. Graphic Equalizer built in, you can reproduce every sound equally. With its DC Power Amplifier, direct readout twin power meters and dependable power supply, the JA-S44 from JVC puts you Closer to the Musical Truth for less money than you'd expect. That's realJVC value. Its matchingtuner is the JVC JT-V22

S.E.A. Stereo Graphic Equalizer

JVC's S.E.A. Graphic Equalizer is in wide use because of its truly wide versatility. A live "tone-zone" S.E.A. such as on the JA_S44, permits a total of 371,293 possble tonal combinations. It helps you eliminate peaks and dips in the frequency responses of your cartridge, speakers or room acoustics; you hear the flattest - and most accurate - response in your room at your favorite listening position.

Covering up to ±12 dB in 2 dB increments the five "tone-zone" controls have center frequencies of 40 Hz; 250 Hz; 1 kHz; 5 kHz and 15 kHz. Thus you can adjust one segment of the frequency range without affecting others - which is a capability that ordinary bass/treble control cannot duplicate. To assure low distortion and wide dynamic range, we've employed, in stead of bulky hum-picking coils, what we call a "Semiconductor Inductor (L)". For further stability and reliability we built the S.E.A. circuit around ICs.

S.E.A. recording facilty. By operating the S.E.A. REC switch on the front panel, you can equalize frequency response as you make a recording on tape decks connected to the JA-S44

DC Power Amplifier

The power amplifier on side the JA-S44 has the capability to amplify DC or zero Hz information.

 

Specifications

Output Power:

45 watts per channel, min. RMS, both channels driven, into 8 Ω   (from 20 Hz to 20,000 Hz with no more than 0.02% total harmonic distortion)

48 watts RMS per channel into 8 Ω   (1kHz, 0.02% THD)

60 watts RMS per channel into 4 Ω   (1kHz, 0.05% THD)

Total Harmonic Distortion (1 kHz) :  0.005% (at 45W Output);  0.02% at (1W Output)

Intermodulation Distortion :  0.01% at (45W Output)

Damping Factor :  30 (20 — 20kHz, 8 Ω )

Load Impedance :  4 - 16 Ω   (SYSTEM 1 or 2);  8 - 16 Ω  (System 1 + 2)

Input Sensitivity/Impedance:

Phono :  2.5 mV /47k Ω 

Tuner :  160 mV /50k Ω 

AUX :  160 mV /50k Ω 

Tape Play : 160mV /50k Ω 

Phono Overload Capacity :  200 mV (RMS)

RIAA Phono Equalization :  ±0.3 dB from RIAA Curve

Output Level:

Tape Rec :  160 mV

DIN REC :  30 mV (80k Ω )

Signal-to-Noise Ratio (RMS):

Phono (IHF A Network) :  80 dB

Tuner, AUX, Tape Play (IHF A Network) :  100 dB

Frequency Response :  5 Hz - 100 kHz (+0, -2 dB)

Tone Controls:

S.E.A. :  Centre Frequencies 40; 250; 1k; 5k; 15 kHz

S.E.A. :  Control Range ±12 dB

Subsonic Filter:  6 dB/oct. at 18 Hz

Loudness Control (-30 dB Volume Control) :  +6 dB at 100 Hz;  +4 dB at 10 kHz

Power Required: 110, 120, 20 - 240 V AC, 50/60 Hz

Dimensions (W x H x D, mm) :  420 x 149 x 317

Weight :  10kg