Speaker - terminal connected to the AC line?

William R. Walsh · 2010-05-24T04:03:29+00:00

Hello all...I have a Technics SA-929 stereo receiver that is in good working order.However, when I was inside it replacing a burnt out light bulb and repairingthe protection relay, I noticed that there is a wire coming from theprintboard that holds both the AC power input and accessory outletconnections going to the "speaker -" connector for the "B" speakerterminals.There is a resistor inline with the wire coming from the AC wiring board.I've never noticed anything like this in a stereo receiver before. As theprevious owner seems to have been very meticulous about packing it up, Ibelieve the non-polarized power cord set is original to the unit.What would this do? Is it dangerous?William

May 24, 2010 40 Replies

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Baron 16 years ago

William R. Walsh Inscribed thus:

Many years ago I used a 6.3v heater transformer and a loudspeaker as a door opening alarm. 50Hz certainly got your attention...

Best Regards: Baron.

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Speaker - terminal connected to the AC line?

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