Nice catch Michael and thanks for your feedback! Yes I tested with stereo 3.5mm connector. Any suggestions on how we should wire the socket to suit both stereo and mono connectors?
I guess if we connect stereo powered speakers we would like both channels to be driven. Thanks, David On 17/05/15 16:43, Michael Carey wrote: > Hi Everybody, > > I am back from my short vacation/trip to Adelaide South Australia where > my SM1000 was hand delivered by David VK5DGR! It was good to finally > meet David after many email exchanges and telephone calls. > > Today I was playing around in the shack with the SM1000 and thought I > would hook up an external speaker to improve the received audio > "quality". However, when I plugged a handy test speaker into the > SM1000... the audio stopped. > > A quick look at the Rev:D schematic revealed what was happening. The > external speaker socket is a TRS (tip ring sleeve) socket with both tip > and ring connected to the internal audio amplifier. Most of my external > speakers are equipped with a mono (tip sleeve) 3.5mm socket... when you > plug one of these into the SM1000 it will short out the audio output. > > I quickly fitted a three pole 3.5mm plug and all was well. For those > with extension speakers lying around in the shack, you can't connect a > mono one into the SM1000... be careful! :-) > > 73 > > Michael. > VK5ZEA > > > > ------------------------------------------------------------------------------ > One dashboard for servers and applications across Physical-Virtual-Cloud > Widest out-of-the-box monitoring support with 50+ applications > Performance metrics, stats and reports that give you Actionable Insights > Deep dive visibility with transaction tracing using APM Insight. > http://ad.doubleclick.net/ddm/clk/290420510;117567292;y > _______________________________________________ > Freetel-codec2 mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 > ------------------------------------------------------------------------------ One dashboard for servers and applications across Physical-Virtual-Cloud Widest out-of-the-box monitoring support with 50+ applications Performance metrics, stats and reports that give you Actionable Insights Deep dive visibility with transaction tracing using APM Insight. http://ad.doubleclick.net/ddm/clk/290420510;117567292;y _______________________________________________ Freetel-codec2 mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/freetel-codec2
