SX-790 (Type KU)

Radio Receiver

Main Details
Maker Pioneer Brand
Additional Model ID SX-790/KU
Form Factor Standard Width
Signal Path Analog Hardware
Made In Japan
Date Produced 1977-1979
(H × W × D)
Weight 24.7lbs
Power Source 120VAC, 60Hz 150W (UL)
Frequency Response 5Hz-80kHz +0dB, -1dB
Notes Black dial variant of SX-780.
Additional Specifications
Power Output (20Hz-20kHz, 8/4Ω) 45W/45W
THD (Rated Output, 8Ω) ≤0.05%
THD (Rated Output, 4Ω) ≤0.08%
THD (23W, 8Ω) ≤0.03%
THD (1W, 8Ω) ≤0.03%
IMD (Rated Output, 8Ω, 50Hz:7kHz) ≤0.05%
IMD (23W, 8Ω, 50Hz:7kHz) ≤0.03%
IMD (1W, 8Ω, 50Hz:7kHz) ≤0.03%
Damping Factor (20Hz-20kHz, 8Ω) 30
Input Sensitivity (Phono) 2.5mV
Input Impedance (Phono) 50kΩ
Phono Overload Level (1kHz, THD 0.05%) 200mV
Input Sensitivity (Aux) 150mV
Input Impedance (Aux) 50kΩ
Input Sensitivity (Tape Play 1,2) 150mV
Input Impedance (Tape Play 1,2) 50kΩ
Output Level (Tape 1,2) 150mV
Frequency Response (RIAA EQ) 20Hz-20kHz ±0.2dB
SNR (Phono, IHF, Short-Circuited, A network) 76dB
SNR (Aux, Tape, IHF, Short-Circuited, A network) 95dB
FM Sensitivity (Mono) 10.3dBf 1.7μV
FM Sensitivity (Mono, 50dB Quieting) 16.2dBf 3.6μV
FM Sensitivity (Stereo, 50dB Quieting) 37.0dBf 39μV
FM SNR (65dBf, Mono) 80dB
FM SNR (65dBf, Stereo) 72dB
FM Distortion (65dBf, 100Hz, Mono) 0.07%
FM Distortion (65dBf, 100Hz, Stereo) 0.15%
FM Distortion (65dBf, 1kHz, Mono) 0.07%
FM Distortion (65dBf, 1kHz, Stereo) 0.15%
FM Distortion (65dBf, 6kHz, Mono) 0.12%
FM Distortion (65dBf, 6kHz, Stereo) 0.25%
FM Capture Ratio 1.0dB
FM Alternate Channel Selectivity 75dB
FM Spurious Response Ratio 65dB
FM Image Response Ratio 65d
FM IF Response Ratio 90dB
FM AM Suppression Ratio 50dB
FM Muting Threshold 19.2dBf 5μV
FM Stereo Separation (1kHz) 45dB
FM Stereo Separation (30Hz-15kHz) 35dB
FM Subcarrier Production Ratio 55dB
FM SCA Rejection Ratio 65dB
Frequency Response (FM) 30Hz-15kHz +0.2dB, -0.8dB
Input Impedance (Antenna, Balanced) 300Ω
Input Impedance (Antenna, Unbalanced) 75Ω
AM Sensitivity (IHF, Ferrite Antenna) 300μV/m
AM Sensitivity (IHF, External Antenna) 15μV
AM Selectivity 26dB
AM Image Response Ratio 40dB
AM IF Response Ratio 40dB


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