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Akai AA-1050

Stereo Receiver (1976-78)

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Akai AA-1050


Tuning range: FM, MW

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

Frequency response: 20Hz to 20kHz

Total harmonic distortion: 0.15%

Input sensitivity: 3mV (MM), 150mV (line)

Signal to noise ratio: 80dB (MM), 90dB (line)

Channel separation: 60dB (MM)

Dimensions: 480 x 155 x 390mm

Weight: 13kg


service manual (incomplete)  English -

specifications   English Francais - SkyLounger

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Reviewed Dec 09th, 2014 by Eurobandit

Beautiful reciver! Had it for about one year now and i had no problems with it! When i got it i've replaced the lamps and cleaned the pots and that was everything that it needed! A good reciver and the sound is fantastic! The bass is also nice and deep! If you'll find one just buy it! It would be the best investment!

Reviewed Apr 13th, 2013 by tonik

I have this receiver for 30 years. It worked in a shop, every day all day for 25 years never had any problems with it. One problem has been and I didn't fixed yet. The ligts on the receiver (all) do not work. This problem started about 4 years ago.



re: AA-1050

Hi _Donnie!

Have you got the schematic of the missing 53109 protection board? (with relay)

Thank you very much in advance!

Best regards

re: AA-1050


I have a copy of the complete service guide including missing diagrams "1) MFC PC board AA-5270A", "3) Power Supply board A5-5309", page 6 "IV FM Tuner section Adjustments".

My unit uses a protection board with a speaker relay - "Protection PC Board A-53109" which I have not been able to find circuit data anywhere. That's why I became a member here.
Well I decided to devote an entire weekend to reverse-engineering this board and will include this circuit with the rest if you are interested.

This is a great site, The pdf I downloaded is very good quality - much better than my photocopied-photocopied-photocopy etc...

re: AA-1050

Just fixed a protection problem on one of these and traced the relay drive part here http://i.imgur.com/nUDrju0.jpg Of course the problem was a leaky transistor in the dc detect portion which we have. No regrets.

re: AA-1050

Hello Donnie,
Did you manage to scan "Protection PC Board A-53109"? I am starting to restore my AA-1050, I bought last year. I have SM that not include this board. Is there any chance to send me a scan of it? I would be appreciate for that. BR, Tine

Phono inputs

Is there any difference between the two phono inputs?

valle3452's picture

Phono Inputs..

Hello. There is no difference between the two sets of Phono inputs, just there for extra convenience in case that you have a couple of turntables and want to keep them both in service and possibly run some comparisons between them.

Akai AA-1050

HI there - the diagram Fig.1 for FM tuning - Page 6 - is missing from this .pdf copy of manual. Where is page 6? Need Fig. 1. Thanks, Nmadigan

Thank you for manual, helped

Thank you for manual, helped me find a broken wire.

Thank you very much for this

Thank you very much for this web site. It's so usefull !! :D

Thanks for the service manual.

I would like to thank you for the nice site and the access to these vintage manuals. I have just recently purchased both an Akai AA 1050, and a Pioneer SX 780, vintage receivers. I will be in the process of restoring both of them shortly. I remembered the great sound that I use to get with my first stereo receiver, and have not been able to find a sound like it since. So, I decided that the only way to get that sound back was to purchase a vintage receiver. Once again, I thank you for your generosity to share.


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