ESC
SX-1280 (Type KU)

SX-1280 (Type KU)

BrandPioneer
FunctionRadio Receiver
Produced1977-1979
CountryJapan
Form FactorStandard Width
Signal PathAnalog Hardware
Dimensions55.1 × 17.5 × 43.9 cm (W × H × D)
Weight63lbs
Power120VAC, 60Hz 430W (UL), 1100W (Max)
Frequency Response5Hz-100kHz +0dB, -1dB
Power Output (8/4Ω)185W/180W (4Ω: Current Limited)
THD (Rated Output)≤0.03%
THD (90W, 8Ω)≤0.01%
THD (1W, 8Ω)≤0.01%
IMD (Rated Output, 8Ω, 50Hz:7kHz)≤0.01%
IMD (90W, 8Ω, 50Hz:7kHz)≤0.0006%
IMD (1W, 8Ω, 50Hz:7kHz)≤0.005%
Input Sensitivity (Power Amp In)1V
Input Impedance (Power Amp In)50kΩ
Damping Factor (20Hz-20kHz, 8Ω)30
SNR (IHF, Short-Circuited, A Network)105dB
Input Sensitivity (PHONO 1)2.5mV
Input Impedance (Phono 1)50kΩ
Cartridge Load100pF, 200pF, 300pF, 400pF
Phono Overload Level (1kHz, THD 0.03%)300mV
Input Sensitivity (Phono 2)2.5mV
Input Impedance (Phono 2)50kΩ
Input Sensitivity (Mic)7.5mV
Input Impedance (Mic)50kΩ
Input Sensitivity (Aux)150mV
Input Impedance (Aux)50kΩ
Input Sensitivity (Tape Play 1)150mV
Input Impedance (Tape Play 1)50kΩ
Input Sensitivity (Tape Play 2)150mV
Input Impedance (Tape Play 2)50kΩ
Output Level (Tape)150mV
Output Level (Pre Out)1V
Output Impedance (Pre Out)1kΩ
THD (Pre Out, 20Hz-20kHz)≤0.01%
Frequency Response (RIAA EQ)20Hz-20kHz ±0.2dB
SNR (Phono, IHF, Short-Circuited, A network)80dB
Frequency Response (Aux, Tape)5Hz-80kHz +0dB/-1dB
SNR (Aux, Tape, IHF, Short-Circuited, A network)95dB
FM Sensitivity (Mono)9.8dBf (1.7μV)
FM Sensitivity (Mono, 50dB Quieting)14.2dBf (2.8μV)
FM Sensitivity (Stereo, 50dB Quieting)36dBf (34μV)
FM SNR (75dBf, Stereo)74dB
FM SNR (65dBf, Mono)80dB
FM SNR (65dBf, Stereo)71dB
FM Distortion (65dBf, 100Hz, Mono)0.1%
FM Distortion (65dBf, 100Hz, Stereo)0.2%
FM Distortion (65dBf, 1kHz, Mono)0.1%
FM Distortion (65dBf, 1kHz, Stereo)0.15%
FM Distortion (65dBf, 6kHz, Mono)0.1%
FM Distortion (65dBf, 6kHz, Stereo)0.2%
FM Capture Ratio1.0dB
FM Alternate Channel Selectivity80dB
FM Spurious Response Ratio100dB
FM Image Response Ratio90dB
FM IF Response Ratio110dB
FM AM Suppression Ratio55dB
FM Muting Threshold19.2dBf (5μV)
FM Stereo Separation (1kHz)50dB
FM Stereo Separation (30Hz-15kHz)35dB
FM Subcarrier Product Ratio65dB
FM SCA Rejection Ratio65dB
Frequency Response (FM)30Hz-15kHz +0.2dB/-0.5dB
Input Impedance (Antenna, Balanced)300Ω
Input Impedance (Antenna, Unbalanced)75Ω
AM Sensitivity (IHF, Ferrite Antenna)300μV/m
AM Sensitivity (IHF, External Antenna)15μV
AM Selectivity30dB
AM SNR50dB
AM Image Response Ratio40dB
AM IF Response Ratio40dB
Channels2 Channel
NotesUSA specific model.