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Kenwood KR-5150

Solid State AM/FM Stereo Receiver (1970)

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Kenwood KR-5150


Tuning range: FM, MW

Power output: 33 watts per channel into 8Ω (stereo)

Frequency response: 20Hz to 40kHz

Total harmonic distortion: 0.5%

Damping factor: 50

Input sensitivity: 1.8mV (mic), 2.5mV (MM), 150mV (DIN), 150mV (line)

Signal to noise ratio: 58dB (mic), 65dB (MM), 75dB (DIN), 75dB (line)

Output: 150mV (line), 30mV (DIN)

Speaker load impedance: 4Ω to 16Ω

Semiconductors: 2 x IC, 2 x FET, 36 x transistors, 33 x diodes

Dimensions: 16 3/4 x 5 1/2 x 12 3/8 inches

Weight: 21lbs



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Reviewed May 22nd, 2019 by Rebar

I just picked one of these up recently at a thrift store. Very very cheap, with some less than stellar Celestion bookshelf speakers. (Great look, crappy sound)

The only thing wrong with it that I have found is a missing treble knob.
It's a model that was sold while i was going to high school, couldn't afford it then however.

When I fired it up, I could not believe the clean sound it produced, I'm very impressed. I hooked up some outdoor speakers to it and this thing rocks!

One feature I really like is the 3 sets of speaker outputs; I'm currently refurbishing 3 sets of speakers coincidentally. This unit will let me compare them side by side with the twist of a knob.

Can't wait to hear it play through some quality speakers.

By the way, I'm a new member, and have to say; THIS SITE IS AWESOME!

Great reference materials / manuals available, and so far the people on here seem very cool.

Ive been in electronics for over 30 years. While not an audio tech, If I can assist anyone with repairs I certainly will!!

I love to see these old units come back to life, and preserve the sound that they produce so nicely.

Rating this as a 7 only because of the funky faceplate controls / styling.... The sound is really impressive.


Reviewed Apr 02nd, 2019 by DUAL506

Love this Receiver. Acquired in 1987 used for $5.00 from a Teacher at my high school. Just recently the left channel has lost some output (right channel sounds great). Lot of sentimental value with this Kenwood and it sounds great too when working properly. Going to do my best to get this back up and running optimally. I'd this in attic storage for approximately 20 years when I reacquired a vintage turntable so I decided I'd break this back out as well. I'd to lubricate all the pots and stuff but it worked great for 2-3 years until now. Not bad for +/- 50 year old unit.

Reviewed Nov 28th, 2017 by Kingpin5

Bought this unit a few weeks ago at and Estate Sale. I pulled it out of a wall unit that it had been slid into some 40-ish years earlier. It is gold. Great Tuner, all the lights function, the silver on the back was still bright and shiny. I know it had been used because there were smudges on the face plate. BUT, at 30 odd watts per channel, this thing is doing exactly what I want. Great phono stage and it has reach. These are cheap on the market and a clean one is worthy.

Reviewed Jul 15th, 2014 by tgerbic

Parents bought one of these in the early to mid 70s. Still working today. Never repaired and still in use. Only stereo so I can only give it a 9.



KR-5150 needs repair

My trusty old 5150 that I purchased new in '71 has just started having a problem.
It comes on with lots of sputtering and dial light blinking and then after a few seconds the sputtering stops and the lights are steady but the left channel is very weak. Right channel good. Any ideas anyone?
I have started changing out the electrolytics with new ones but still the same.

re: KR-5150 needs repair

I just purchase a KR-6160 on ebay with a bad left channel. Resistor 91 a .47ohm 2 watt resistor was fried. It had been repaired, had a carbon composition rather than the original metal film resistor. I knew it was a recurring problem, so I went looking for the cause. What I found was a yellow wire that ran from the speaker selector switch to the left output transistor, was caught on the positive leg of a large filter capacitor C271 2200uf 63volt. Must have happened at the factory cause eventually the insulation wore off causing arcing and bleeding into the left channel, could cause the receiver to be starved for power since it is almost dead short to chassis ground. Sorry, this might be a little late to help you, good luck.

re: KR-5150 needs repair

Clean the power switch with contact cleaner. With it UNplugged.

re: KR-5150

I found one that was discarded for free.

Nice clean sound (I am a classical music person), Tuner very good, records sound good, well built (heavy for its size).

Really surprise how good this early transistor receiver sounds.

Easy listening, no fatigue.

Interesting Features:
Separate pre-amp output
Main-Amp input
2 turntable inputs
Step base and treble tone controls
3 set of speaker inputs A,B,C

The only thing that is a put off is the "HAM" radio look of the front panel.

Does anyone have the service manual?
I would like to tune the AMP section( current and DC offset).


re: KR-5150

There's a service manual download on this page.

This website is not affiliated with or sponsored by Kenwood. To purchase KR-5150 spares or accessories, please contact the company via their website or visit an authorised retailer.