Pioneer SX-1980 (270W/Ch)
Lamps Replaced With LED upgrade
Speaker Terminal Upgraded to Banana Plugs
Installed new filter capacitors
Installed New Redesigned Power Supply
Performed Tuner Alignment
Bias and DC Offset Adjustments
Full Internal and External Cleaning
Description
The Pioneer SX-1980 is an AM/FM stereo receiver with a unique quartz-lock on station frequency which is immune to time and temperature drift, even better then AFC.
It features outputs for 3 sets of loudspeakers, 3 cartridge impedance and capacitance settings for the phono input, 2 tape inputs/outputs for tape duplication, exclusive Pioneer twin tone controls with tone defeat switch and many more outstanding features.
Specifications
Tuning range: FM, MW
Power output: 270 watts per channel into 8Ω (stereo)
Frequency response: 5Hz to 80kHz
Total harmonic distortion: 0.03%
Damping factor: 40
Input sensitivity: 7.5mV (mic), 2.5mV (MM), 150mV (line)
Signal to noise ratio: 87dB (MM), 100dB (line)
Output: 150mV (line), 2V (Pre out)
Semiconductors: 12 x FET, 11 x IC, 130 x transistors, 84 x diodes
Dimensions: 560 x 211 x 497mm
Weight: 35.4kg
Accessories: FM T-type antenna
Year: 1978
