Pioneer

SX-1250 (Type KC)

Radio Receiver

Main Details
Maker Pioneer Brand
Function
Additional Model ID SX-1250/KC
Form Factor Desktop
Signal Path Analog Hardware
Made In Japan
Date Produced 1976-1977
Dimensions
(H × W × D)
Weight 64.25lbs
Power Source 120VAC, 60Hz 650VA (CSA), 1200W (Max)
Frequency Response 5Hz-100kHz +0dB, -1dB
Notes Market specific model for Canada
Additional Specifications
Power Output (8/4Ω) 160W/200W
THD (Rated Output) ≤0.1%
THD (80W, 8Ω) ≤0.05%
THD (1W, 8Ω) ≤0.07%
IMD (Rated Output, 8Ω, 50Hz:7kHz) ≤0.1%
IMD (80W, 8Ω, 50Hz:7kHz) ≤0.05%
IMD (1W, 8Ω, 50Hz:7kHz) ≤0.07%
Input Sensitivity (Power Amp In) 1V
Input Impedance (Power Amp In) 50kΩ
Damping Factor (20Hz-20kHz, 8Ω) 30
SNR (IHF, Short-Circuited, A Network) 100dB
Input Sensitivity (Phono 1, 2) 2.5mV
Input Impedance (Phono 1, 2) 50kΩ
Phono Overload Level (1kHz, THD 0.1%) 500mV
Input Sensitivity (Mic) 6.5mV
Input Impedance (Mic) 50kΩ
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) 150mV
Output Level (Tape Rec 2, DIN Connector) 30mV
Output Impedance (Tape Rec 2, DIN Connector) 80kΩ
Output Level (Pre Out) 1V
Output Impedance (Pre Out) 1kΩ
THD (Pre Out, 20Hz-20kHz, 1V) ≤0.02%
Frequency Response (RIAA EQ) 30Hz-20kHz ±0.2dB
SNR (Phono, IHF, Short-Circuited, A network) 75dB
Frequency Response (Aux, Tape) 10Hz-50kHz +0dB/-1dB
SNR (Aux, Tape, IHF, Short-Circuited, A network) 90dB
FM Sensitivity (Mono) 8.7dBf 3.0μV/300Ω
FM Sensitivity (Mono, 50dB Quieting) 11.5dBf 4.1μV/300Ω
FM Sensitivity (Stereo) 14.5dBf 5.8μV/300Ω
FM Sensitivity (Stereo, 50dB Quieting) 36.0dBf 69μV/300Ω
FM Usable Sensitivity (IHF '58) 1.5μV
FM SNR (65dBf, Mono) 80dB
FM SNR (65dBf, Stereo) 74dB
FM Distortion (65dBf, 100Hz, Mono) 0.1%
FM Distortion (65dBf, 100Hz, Stereo) 0.25%
FM Distortion (65dBf, 1kHz, Mono) 0.1%
FM Distortion (65dBf, 1kHz, Stereo) 0.2%
FM Distortion (65dBf, 6kHz, Mono) 0.3%
FM Distortion (65dBf, 6kHz, Stereo) 0.3%
FM Capture Ratio 1.0dB
FM Alternate Channel Selectivity 83dB
FM Spurious Response Ratio 110dB
FM Image Response Ratio 110dB
FM IF Response Ratio 120dB
FM AM Suppression Ratio 60dB
FM Muting Threshold 13dBf 4.9μV/300Ω
FM Stereo Separation (1kHz) 50dB
FM Stereo Separation (35Hz-15kHz) 35dB
FM Subcarrier Product Ratio 74dB
FM SCA Rejection Ratio 74dB
Frequency Response (FM) 30Hz-15kHz +0.3dB/-1.0dB
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 40dB
AM SNR 55dB
AM Image Response Ratio 65dB
AM IF Response Ratio 85dB
Displays/Indicators
Type: Display
Indication: Radio Station
Scale: AM/FM
Type: Meter
Indication: Signal
Type: Meter
Indication: Tuning
Type: Indicator
Indication: Speaker A
Type: Indicator
Indication: Speaker B
Type: Indicator
Indication: Speaker C
Type: Indicator
Indication: Stereo
Type: Indicator
Indication: AM
Type: Indicator
Indication: FM
Type: Indicator
Indication: Phono 1
Type: Indicator
Indication: Phono 2
Type: Indicator
Indication: Aux
Controls
Parameter: Power
Control Type: Toggle Switch
Range: On/Off
Parameter: Bass 50Hz
Control Type: Rotary Encoder
Range: -5db to 5db
Parameter: Bass 100Hz
Control Type: Rotary Encoder
Range: -10db to 10db
Parameter: Tone
Control Type: Toggle Switch
Range: On/Off
Parameter: Treble 10kHz
Control Type: Rotary Encoder
Range: -10db to 10db
Parameter: Treble 20kHz
Control Type: Rotary Encoder
Range: -5db to 5db
Parameter: Tape Duplicate
Control Type: Toggle Switch
Range: On/Off
Parameter: Tape Monitor 1
Control Type: Toggle Switch
Range: On/Off
Parameter: Tape Monitor 2
Control Type: Toggle Switch
Range: On/Off
Parameter: Adaptor
Control Type: Toggle Switch
Range: On/Off
Parameter: Balance
Control Type: Rotary Encoder
Range: Left/RIght
Parameter: Mode
Control Type: Toggle Switch
Range: Stereo/Mono
Parameter: Loudness
Control Type: Toggle Switch
Range: On/Off
Parameter: Volume
Control Type: Rotary Encoder
Range: -∞db to 0db
Parameter: Muting
Control Type: Toggle Switch
Range: Off/-20db
Parameter: Speakers
Control Type: Latching Push Switch
Range: A
Parameter: Speakers
Control Type: Latching Push Switch
Range: B
Parameter: Speakers
Control Type: Latching Push Switch
Range: C
Parameter: Filter
Control Type: Latching Push Switch
Range: 30Hz
Parameter: Filter
Control Type: Latching Push Switch
Range: 8kHz
Parameter: FM
Control Type: Latching Push Switch
Range: Multipath
Parameter: FM
Control Type: Latching Push Switch
Range: Muting Off
Parameter: Source
Control Type: Latching Push Switch
Range: AM
Parameter: Source
Control Type: Latching Push Switch
Range: FM
Parameter: Source
Control Type: Latching Push Switch
Range: Phono 1
Parameter: Source
Control Type: Latching Push Switch
Range: Phono 2/Mic
Parameter: Source
Control Type: Latching Push Switch
Range: Aux
Parameter: Radio Station
Control Type: Rotary Pot
Range: AM/FM

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