[Elecraft] K3S vs. K3

[Doug Person via Elecraft]

Do you think the K3 audio is as good as it can get or do you think that 
there are some possible mods that might smooth it out a little?  The K3 
audio is good, but after spending a year on another top-end rig, I can 
really hear a difference.  Probably the only issue I have with the K3.

73, Doug -- K0DXV

On 05/16/2015 09:53 AM, Jim Brown wrote:
> On Sat,5/16/2015 6:33 AM, Mike Harris wrote:
>> Sherwood has previously commented unfavourably on the audio quality 
>> of the LINE OUT signal.  This has lead to the general acceptance that 
>> the LINE OUT level should be limited to 8-10. 
>
> This is pretty ancient history, and is the result of a digital guy 
> trying to design an audio output stage. The error was in 1) using an 
> unshielded telecom transformer and 2) adding 600 ohms in series 
> between the output device and that transformer. In the world of audio, 
> that's well known to cause distortion. 3) 600 ohm inputs and outputs 
> have not been used in pro audio for more than 40 years, another goof.
>
> I noticed the problem as soon as I got my first K3, measured it, and 
> showed it around. I don't know if that was before or after Rob found it.
>
> If I'm not mistaken, the resistors were removed a LONG time ago, 
> which, when placed as they were, caused the distortion.
>
> 73, Jim K9YC
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to k0dxv at aol.com
>