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Kenwood KR-5150

Solid State AM/FM Stereo Receiver (1970)

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Kenwood KR-5150

Specifications

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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Reviews

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rating
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.

rating
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.

 

Comments

KR-5150 needs repair

Hi
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).

Thanks

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