Sansui G-4700 receiver

Digital readouts and digital circuitry. Great specs. And the best-price / performance ratio in the business. All the right numbers. That's the new Sansui G-4700.

Double digital Design.

The front panel of the G-4700 has a bright electronic digital readout that shows the frequency of the station you've selected; and behind the front panel is one of the most advanced tuning systems in the world.

Sansui's patented Digitally Quartz-Locked Circuit uses a precise quartz crystal time base to keep your station locked in, even through many hours of listening or if you turn the receiver off and back on again.

Conventional quartz-controlled receivers use analog phase comparison circuits that can become inaccurate because of harmonic interference. Our system uses a new LSIC (Large Scale Integrated Circuit) digital processor that actually counts the vibrations of the quartz crystal to compare to the tuned frequency. The frequency is perfectly locked in the instant you find the station you want.

With the unique Digitally Quartz-Locked system, the G-4700 delivers high sensitivity , a better Signal-to-Noise ratio, and a better spurious rejection ratio.

DC Power Amplifier.

Power is ample for almost any speaker made, with 50 watts per channel, min. RMS, both channels driven into 8 ohms from 20 Hz to 20 kHz with no more than 0,05% Total Harmonic Distortion.

And the wide bandwidth DC power amp circuit responds quickly to transient music signals for the most accurate and pleasing music reproduction. What you hear is clean and sharp, just the way it was recorded.

Electronic LED Power Meters

Don'r worry if you present speakers can't handle 50 watts. The array of fast-actling LED's on the Sansui G-4700 lets you monitor and control the output level so you don't damage your speakers.

Electronic Tuning Meters.

Two fluorescent readouts help to zero-in on each station with accuracy and ease. Both the signal strength and center-tune indicators operate digitally for precise station selection, and the nearby LED verifies that the quartz circuit has locked in your station.

Superb Human Engineering.

A full complement of genuinely useful knobs, switches and jacks gives you complete control over what you hear and how you hear it.

Specifications:

Audio Section

Power Output (min. RMS, both channel driven, 20-20,000 Hz, no more than 0,05% T.H.D.):  50 watts per channel into 8 ohms

Load Impedance:  8 ohms

Total Harmonic Distortion :  less than 0,05% at or below rated min. RMS power output

Intermodulation Distortion (70 Hz : 7 kHz = 4 : 1 SMPTE method):  less than 0,05% at rated power output 

Frequency Response ( Overall from Tape/AUX, at 1 watt):  10 Hz to 70,000 Hz, +1,0 dB, -2,0 dB

RIAA Curve Deviation (Phono, 30 Hz - 15 kHz):  +0,5 dB, -0,5 dB

Damping Factor (1 kHz, both channel driven):  30 into 8 ohms

Input Sensitivity/ Impedance:

Phono 1 :  2,5 mV/47 k Ω (max. input capability :  200 mV at 1 kHz, less than 0,5% T.H.D.)

Aux, Tape  :  150 mV/47 k Ω

Output Level (at 1 kHz):  

Tape Rec (Pin jacks) :  150 mV

Hum and Noise (short-circuit, A-network):

Phono :  76 dB

Aux, Tape  :  95 dB

Channel Separation (at 1 kHz)

Phono :  50 dB

Aux, Tape :  50 dB

Controls

Bass :  ±10 dB at 50 Hz

Trebele :  ±10 dB at 10 kHz

Susbsonic Filter:  -3 dB at 18 kHz (6 dB/oct)

High Filter :  -3 dB at 3 kHz (6 dB/oct)

Loudness (Volume control -30 dB position):  9 dB at 50 Hz ;  6 db at 10 kHz

FM Tuner Section

Tuning Range:  88 to 108 MHz

Usable Sensitivity:

Mono  [IHF/DIN]:  10,8 dBf (1,9 µV) / 1,2 µV

Stereo IHF :  19 dBf

50 dB Quieting Sensitivity:

Mono :  15 dBf

Stereo :  38 dBf

Signal-to-Noise  Ratio (at 65 dBf):

Mono :  75 dB

Stereo :  70 dB

Distortion (at 65 dBf) Mono :  

at 100 Hz :  less than 0,18%

at 1 kHz :  less than 0,15%

at 6 kHz :  less than 0,25%

Distortion (at 65 dBf) Stereo :  

at 100 Hz :  less than 0,3%

at 1 kHz :  less than 0,25%

at 6 kHz :  less than 0,3%

Alternate Channel Selectivity (at 400 khz):  50 dB

Capture Ratio:  1,0 dB

Image Response Ratio:  48 dB

Spurious Response Ratio: 70 dB

IF Response Ratio:  90 dB

Stereo Separation:

30 dB at 100 Hz

40 dB at 1 kHz

28 dB at 10 kHz

Frequency Response:  30 to 15,000 Hz

Antenna Input Impedance:  300 Ω (balanced); 75 Ω (unbalanced)

AM Tuner Section

Tuning Range:  530 to 1,600 kHz

Usable Sensitivity (bar antenna):  50 dB/m (300 µV/m)

Selectivity (±10 kHz):  33 dB

Signal-to-Noise Ratio:  46 dB

Distortion (at 30% Modulation, 80 dB/m):  less than 0,5%

General Section

Power Requirements:  100, 120, 220, 240 V, 50/60 Hz

Power Rated Consumption:  160 watts, 190 VAC

Dimensions (W x H x D):  433 x 155 x 355 mm (17-1/16" x 6-7/8" x 14")

Weight:  8,6 kg (19 lbs) net