Jim (K9YC) is right. When looking at the K3 schematic, realize that the headphone amp's 8-ohm build-out resistors are not on the same schematic page as the headphone amp. At least it wasn't the last time I looked.
Paul, W9AC ----- Original Message ----- From: "James Sarte (K2QI)" <[email protected]> To: <[email protected]> Cc: <[email protected]> Sent: Friday, December 03, 2010 6:08 PM Subject: Re: [Elecraft] [K3] Shorting K3 PHONE jack outputs (WAS OT: Stereo to mono adapters) I will have a look a the schematics tonight after dinner; just find it a bit hard to believe that I'd get conflicting information direct from Aptos. Tnx, James K2QI On Fri, Dec 3, 2010 at 5:57 PM, Jim Brown <[email protected]> wrote: > > 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:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
