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Pioneer SX-1250

AM/FM Stereo Receiver (1976-77)

Pioneer SX-1250


When you go to buy a new receiver, ask yourself these questions:

Does its FM tuner section guarantee high performance of spurious rejection as well as high sensitivity?

Does it include the very latest electronics circuit technology to assure a constant stable and high quality sound reproduction from small to large power output?

Are you going to be proud to own it for a long, long time?

Pioneer's new and elegantly designed SX-1250 AM/FM receiver provides a resounding yes to each of these questions - and then some.

No other Pioneer receiver provides such incomparable FM performance and sensitivity and then combines it with mammoth continuous power output of 160W per channel, min RMS at 8 Ohms, from 20 Hertz to 20,000 Hertz, with no more than 0.1% total harmonic distortion.


Tuning range: FM, MW

Power output: 160 watts per channel into 8Ω (stereo)

Frequency response: 10Hz to 50kHz

Total harmonic distortion: 0.1%

Damping factor: 30

Input sensitivity: 6.5mV (mic), 2.5mV (MM), 150mV (DIN), 150mV (line)

Signal to noise ratio: 75dB (MM), 90dB (line)

Output: 150mV (line), 30mV (DIN), 1V (Pre out)

Speaker load impedance: 4Ω (minimum)

Dimensions: 556 x 186.5 x 464.5mm

Weight: 29.2kg

Year: 1976


brochure (en)

instruction/owners manual (en)

exploded views (en)

schematics (en)

service manual (en)

supplement (en)

instruction/owners manual (imp scan) (en) - McKenziebld

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Pioneer Receivers


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Submitted by MOTHAIS

best for ever receiver....



re: SX-1250

Hello. I have an SX-1250, does anyone have any idea where I can get a full service on the unit, I live in Los Angeles, CA. Thank you


Purchased brand new in Columbus, Ohio in 1977 and it still kicks ass! Not bad for a system that is over 35 years old. Serviced only 3 times and replaced CAPS, and some 'dusty' tuner components.

Love this receiver, possibly the best BBA receiver Pioneer marketed to the US. I also matched this receiver with 2 Pioneer HPM-500 floor speakers (well, by today's standards you could call them small condominiums). Giant 15" monster woofers.

Love the 70' big bottom audio!

My 1250 is about to go through some changes

Thanks to finally having the service manual. I've owned this receiver for about 8 years, and now that I'm back working as an electronics tech, have every conceivable piece of test equipment available to me, and a manager who encourages me to work on personal gear, this baby is going to be special!

New PS caps, poly caps in all the audio paths, replacing the speaker terminals, and some tuner mods as well.



thanks , thanks , supper , Glad to have one,
nice to have had your help by the manuals and schema...thanks a lot..


Thanks..been a proud owner of this fabulous product I had been looking hi & Lo for a manual..now I have it..This receiver ROCKS!


I am about to modify mine. I will post here and let you know how it works out.



Pioneer SX 1250

Fantastic!! Thanks.

sx 5529

Just pulled the trigger and purchaced a sx 5529 Thanks for all the info. Great stuff.
Thank you


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