Guest nanop Posted July 12, 2006 Report Share Posted July 12, 2006 Hi, Quote Link to comment Share on other sites More sharing options...
audioguru Posted July 12, 2006 Report Share Posted July 12, 2006 It depends what it is.If it is a stereo power amplifier then you can't just short the two outputs together, damage will occur.If the stereo outputs are from opamps then you also can't just short them together.You need an adder circuit to add the left channel and the right channel to get mono.An adder can simply be two resistors, one in series with the output of each channel, and joined together to make mono. The resistor values depend on the stereo output impedances and the mono input impedance. Try 10k for each resistor. Quote Link to comment Share on other sites More sharing options...
Guest nanop Posted July 12, 2006 Report Share Posted July 12, 2006 Thanks for the info and the quick replyCan you tell me what's the purpose of the two resistors do? Quote Link to comment Share on other sites More sharing options...
audioguru Posted July 12, 2006 Report Share Posted July 12, 2006 Shorting outputs together causes a high current to flow when the outputs are different. Resistors reduce current flow and allow the signals to still be added together. Quote Link to comment Share on other sites More sharing options...
indulis Posted July 12, 2006 Report Share Posted July 12, 2006 I am not a "RF" person, but to the best of my knowledge, FM (Frequency Modulation) is a "line-of-sight" transmission, in other words, if you drive behind a mountain, which blocks "line-of-sight" to the transmission antenna, you will loose the signal. If the signal got so weak that the receiver couldn't detect that it was stereo, I suppose you could look at that as receiving it as "mono" signal to a greater distance. Quote Link to comment Share on other sites More sharing options...
audioguru Posted July 12, 2006 Report Share Posted July 12, 2006 Hi, Quote Link to comment Share on other sites More sharing options...
Theatronics Posted July 12, 2006 Report Share Posted July 12, 2006 You guys had me worried for a while with all that talk about Post Amp signal Mixing.Whew.Yea, the Way it happens is all thanks to the Zenith/GE pilot tone multiplex system.But if that fancy widget fails, you can still get a mono signal. The result is the combo of both left and right signals just like in the world of AM.And all that without shoring out your A-class amplifiers. But where is the fun in that.-Mike Quote Link to comment Share on other sites More sharing options...
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