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Harman Kardon 50 Plus

Multichannel AM/FM Receiver

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Harman Kardon 50 Plus


Tuning range: FM, MW

Power output: 25W/ch (stereo), 12.5W/ch into 8Ω (quadraphonic)

Frequency response: 18Hz to 74kHz

Total harmonic distortion: 0.3%

Damping factor: 20

Signal to noise ratio: 60dB (MM), 63dB (line)

Dimensions: 15-5/8 x 12-3/4 x 4-3/4 inches

Weight: 18lbs

Accessories: optional CW25 walnut enclosure



re: 50 Plus

A warning about the bias!

I got one of these with a blown channel. I found an unsoldered connection and a missing jumper on the 2/4 switch that changes the bias for two or four channel use. Neither channel was able to adjust the bias. The switch also selects a higher transformer voltage for two channel mode so the bias is adjusted.

Check that the switch is adding the resistance.

The 2SC1107 is obsolete, I used TIP31A replacements.

This website is not affiliated with or sponsored by Harman Kardon. To purchase 50 Plus spares or accessories, please contact the company via their website or visit an authorised retailer.