On Mon, 2014-02-10 at 08:51 +0100, Ralf Mardorf wrote: > On Mon, 2014-02-10 at 01:39 +0000, Fons Adriaensen wrote: > > If you're a bit handy with a soldering iron, all it takes to > > mix the DAC outputs to mono would be two resistors and some > > short pieces of wire and connectors. > > If the OP doesn't use tube amplifiers it should look like this: > > http://1.bp.blogspot.com/_BGB-FuSV33o/S7qQlfl_1aI/AAAAAAAAAHY/QO2t7rZP5N0/s400/stereotomono.gif > > When using tube amplifiers you might want to add transformers. PS: "Thanks for the useful post. I have one suggestion, though: I think it might be better to use 1K resistors rather than 10K. The input impedance of a typical amp should be in the region of 20K. At audio frequencies (where impedance-matching doesn't matter) it is best if the input impedance is at least x10 the output impedance. Assuming an output impedance in the range 100-600 ohms (plausible for an MP3 player headphone output), that would keep the total output impedance below 2K which should result in more signal voltage across the amp's input." - http://marcusmorris.blogspot.de/2010/04/stereo-to-mono-converter-how-to-do-it.html _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
