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Harman Kardon 50 Plus

Multichannel AM/FM Receiver

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Harman Kardon 50 Plus

Specifications

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

Downloads

Comments

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The 2SC1107 is obsolete, I used TIP31A replacements.

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