How could a 2 circuit plug be mono since there is only 1 circuit? N4LQ Steve
----- Original Message ----- From: "Jim Brown" <j...@audiosystemsgroup.com> To: <elecraft@mailman.qth.net> Sent: Friday, December 03, 2010 5:57 PM Subject: Re: [Elecraft] [K3] Shorting K3 PHONE jack outputs (WAS OT: Stereo to mono adapters) > On 12/3/2010 2:31 PM, James Sarte (K2QI) wrote: >> Now what am I to believe here??? If I understand what was written in >> the manual, then it's ok to use a mono plug in those jacks as they're >> buffered by a series of resistors. >> > > The manual is correct -- the HEADPHONE output is isolated with > resistors. The SPEAKER output is NOT, and putting a two-circuit plug > (mono plug) into it can cause the output chip to fail destructively. > > Again, the SCHEMATICS are on line. Study them. We're hams. We passed > exams showing that we know this stuff. > > 73, Jim K9YC > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
