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Sony TA-1120

Stereo Integrated Amplifier (1969-71)

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Sony TA-1120

Specifications

  • Power output: 50 watts per channel into 8Ω (stereo)

    Frequency response: 10Hz to 100kHz

    Total harmonic distortion: 0.5%

    Damping factor: 70

    Input sensitivity: 2mV (mic), 200mV (MC), 5mV (MM)

    Signal to noise ratio: 65dB (mic), 90dB (MC), 80dB (MM)

    Output: 200mV (line), 1.5V (Pre out)

    Speaker load impedance: 8Ω to 16Ω

    Semiconductors: 46 x transistors, 23 x diodes

    Dimensions: 400 x 145 x 310mm

    Weight: 11kg

  • Power output: 50 watts per channel into 8Ω (stereo)

    Frequency response: 10Hz to 100kHz

    Total harmonic distortion: 0.1%

    Damping factor: 180

    Input sensitivity: 1.2mV (mic), 1.2mV (MM), 150mV (line)

    Signal to noise ratio: 65dB (mic), 70dB (MM), 90dB (line)

    Output: 150mV (line), 2V (Pre out)

    Semiconductors: 44 x transistors, 25 x diodes, 2 x thermistors

    Dimensions: 400 x 145 x 310mm

    Weight: 11kg

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Comments

re: TA-1120

Wow ! The Sony TA-1120 (not the A version - although excellent, too) is one AMAZING amp. Got mine already recapped (Nichicon gold muse) save for the biggy caps in back (4 of em). Replaced original power cord with polarized plug. Fixed polarity reversal issue, too ( 120vac was appearing on the metal chassis - making my computer sound card line input to go POOF when hooking up the amp). Another more annoying problem was the regular drop in volume on the left side to about half of the right side. Turns out the Mute circuit 24vdc relay was the problem ! When energized, the left side contacts were not touching properly (oxydation) and “activating” the 30 ohm resistor drop in volume. Replaced with a 24vdc 10amp DPDT brand-new relay. Works fantastic now. Will replace the biggy caps soon as soon as I can save up some funds.

re: TA-1120

Anybody with an idea about the difference to the TA-1080? I have one on the desk and desperately looking for a service manual...

re: TA-1120

to whoever posted this service manual...a big big thank you. been holding on to my deceased father's stereo amp merely as a momento, never thinking there was hoping of getting it to actually work again after a decade of collecting dust.

re: TA-1120

Wildwill, My 1120 still works and also my thanks to whoever uploaded the RM. Now I might be able to quiet my volume knob!

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