Technics new Class A receivers
Give you so much because they give you so little. 0,00% switching distortion. 0,00% FM drift
Technics SA-818, uncommon receiver, because he has it too, synchro-bias circuitry and quartz-synthesized tuning. Together they give you that special something you've come to expect from Technics : sonic excellence.
Synchro-bias. What it does may seem complicated, but it sounds simply beautiful. With conventional amplifier designs, the output transistors constantly switch omn and off as the input waveform goes from positive to negative. Technics synchro-bias eliminates switching distortion because it constantly sends minute amounts of current to the transistor not in use. And since the transistors don't switch on or off, distortion is eliminated.so is FM drift because both receivers include our quartz-synthesized tuning system. With its quartz-crystal oscillator both the frequencies broadcast and those received are quartz-synthesized so tuner drift is completely eliminated. So is the hassle of tuning because SA-818 can be preset to receive eight AM and eight FM stations.
You'll also like Technics acoustic control because its high and low range boost and filter switches can attenuate or boost two different frequency ranges.
Technics New Class A receivers. They give you more what you want and less of what you don't.
Specifications
Amplifier Section
Rated Minimum Sine Wave RMS Power Output 20 Hz - 20 kHz both Channels Driven :
110 W per channel at 8 Ω : 0,005% T.H.D.
150 W per channel at 4 Ω : 0,008% T.H.D.
1 kHz Continuous Power Output both Channels Driven (0,001% T.H.D.
120 W per channel at 8 Ω
170 W per channel at 4 Ω
Dynamic Headroom:
1,5 dB at 8 Ω
2,0 dB at 4 Ω
Total Harmonic Distortion
Rated Power at 20 Hz to 20 kHz
0,005% at 8 Ω
0,008% at 4 Ω
Half Power at 20 Hz - 20 kHz : 0,005 % at 8 Ω
Half Power at 1 kHz : 0,001% at 8 Ω
SMPTE Intermodulation Distortion: 0,01% at 8 Ω
Frequency Response
Phono : RIAA standard curve ±0,3 dB
Aux, Tape : 20 Hz - 20 kHz +0 dB, -0,3 dB (5 Hz - 100 kHz -3 dB)
Input Sensitivity
Phono : 0,28 mV (2,5 mV IHF '66)
Aux, Tape : 16 mV (150 mV IHF '66)
Signal-to-Noise Ratio (IHF A)
Phono : 74 dB (82 dB IHF '66)
Aux, Tape : 79 dB (100 dB IHF '66)
Maxi. Input Voltage :
Phono : 180 mV (190 mV, 1 kHz)
Input Impedance
Phono : 47 k Ω
Aux, Tape : 33 k Ω
Tone Controls
Bass : ±10 dB at 50 Hz
Treble : ±10 dB at 20 kHz
Middle : ±6 dB at 1 kHz
Acoustic Controls (at tone "0" position)
Low Boost : 100 Hz +6 dB
High Boost : 10 kHz +6 dB
Low Cut : 70 Hz, -6 dB/oct
High Cut : 7 kHz, -6 dB/oct
Loudness Control (Volume at -30 dB): 50 Hz +9db
Muting : -20 dB
Output Voltage
Rec Out : 150 mV
Low Frequency Damping Factpor: 50 (8 Ω ); 25 (4 Ω )
Load Impedance
Main or Remote : 4 - 16 Ω
Main and remote : 8 - 16 Ω
FM Tuner Section
Frequency Range: 87,9 - 107,9 MHz
Sensitivity: 10,3 dBf (1,8 µV, IHF '58)
50 dB Quieting Sensitivity
Mono : 13,2 dBf (2,5 µV IHF '58)
Stereo : 36,2 dBf (35,4 µV IHF '58)
Total Harmonic Distortion (Normal)
100 Hz : 0,15% (mono); 0,25% (stereo)
1 kHz : 0,1% (mono); 0,15% (stereo)
6 kHz : 0,.25% (mono); 0,3% (stereo)
Signal-to-Noise Ratio
Mono : 76 dB
Stereo ; 72 dB
Frequency Response: 20 Hz - 15 kHz +0,2 dB -0,8 dB
Alternate Channel Selectivity:
Normal ±400 kHz : 65 dB
Narrow ±400 kHz : 85 dB
Narrow ±300 kHz ; 75 dB
Capture Ratio (Normal) : 1,2 dB
Image Rejection at 98,1 MHz ; 80 dB
IF Rejection at 98,1 MHz : 90 dB
Spurious Response Rejection at 98,1 MHz : 100 dB
AM Suppression: 60 dB
Stereo Separation (Normal)
45 dB at 1 kHz
35 dB at 10 kHz
Carrier Leak
-65 dB at 19 kHz
-70 dB at 38 kHz
FM De-emphasis: 25 µs, 50 µs, 75 µs
Antenna Terminals: 300 Ω (balanced), 75 Ω (unbalanced)
AM Tuner Section
Frequency range: 530 - 1620 kHz
Sensitivity: 30 µV, 250 µV/m
Selectivity: 55 dB
Image Rejection at 1000 kHz ; 50 dB
IF Rejection at 1000 kHz : 45 dB
General
Power Requirements: AC 120 V 60 Hz
Power Consumption: 590 W, 740 VA
Dimensions (W x H x D): 566 x 172 x 396 mm (22-9/32" x 6-25/32" x 15-19/32")
Weight: 18,5 kg (40,6 lb)
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