Jim K9YC, wrote: Older versions of the K3 produce a LOT of audio distortion at the Line Out for settings of Line Out gain greater than about 10. Distortion starts showing up weakly with a setting around 5, and is bonkers up around 50. I've heard that's been fixed in recent production, but don't know what serial number. I think it's also fixed with the audio mod that you can buy.
-------------------------- Wayne's comments: While the K3's speaker and line outputs meet the original K3 distortion specifications at their intended levels of operation, we've found that further improvement is possible, especially at higher volume levels, with minor component changes. Low level distortion products can be further reduced at both outputs. These changes are being incorporated into new K3s. The K3AFMDKT modification kit contains the parts to make both speaker amplifier and line-out audio output modifications, but you can choose to do either or both, as they are independent. Note: The headphone output of the K3, which uses a separate amplifier, already has a very low distortion output and is not impacted by these changes. For details on making the modification, see: http://www.elecraft.com/K3/mods/K3_AF_Stage_Upgrade_Instructions_Rev_B.pdf These changes were incorporated in K3s starting at about S/N 1830 for the speaker amp and at about S/N 1900 for the Line Out. Ron AC7AC ______________________________________________________________ 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
