Re: [Elecraft] K2 / K3 audio - and the K2 fan

2016-06-27 Thread Joe Subich, W4TV
The issue could be due to 2 factors: AF distortion and AGC properties. K2 has a very sweet AGC. K3 had a very high AF distortion level that was mitigated by a series of upgrades ( at least choke and DSP board). If you read old messages, there is a message by a Russian who looked at initial IMD

Re: [Elecraft] K2 / K3 audio - and the K2 fan

2016-06-27 Thread Don Wilhelm
Those changes (or an alternate) were included with the updated K3 DSP board. They are present in all K3s sine the release of the DSP board update. 73, Don W3FPR On 6/27/2016 10:19 AM, Ignacy wrote: If you read old messages, there is a message by a Russian who looked at initial IMD level

Re: [Elecraft] K2 / K3 audio - and the K2 fan

2016-06-27 Thread Ignacy
I also feel that K2 is easier to listen to under average conditions than K3. My K3 has the DSP board updated. The issue could be due to 2 factors: AF distortion and AGC properties. K2 has a very sweet AGC. K3 had a very high AF distortion level that was mitigated by a series of upgrades ( at

Re: [Elecraft] K2 / K3 audio - and the K2 fan

2016-06-26 Thread Phil Wheeler
Ted, I have a fully-developed K2 #380) including KPA100, KAT100, KDSP2, etc. I've even added the 3rd party MA Board and the Rework eliminator (together). I also did a full update of everything in 2014 (ROMs, some updates I'd not done when last I worked on the K2 in 2004 or so, etc.; it was

Re: [Elecraft] K2 / K3 audio - and the K2 fan

2016-06-26 Thread Fred Jensen
Can't answer your second question about the fans, but I initially thought that my K2 "just sounded 'nicer'" than my K3. It's not a huge difference, and I'm fairly deaf anyway, so I don't have a definitive, iron-clad answer but: 1. I usually use lightweight headphones [single narrow metal

Re: [Elecraft] K2 / K3 audio - and the K2 fan

2016-06-26 Thread Don Wilhelm
Ted, You would find the K3 RX EQ to be beneficial to your ears. The IF filtering in the K2 causes the high frequency to roll off, but the stock K3 has a flatter response. If you have an older K3, the DSP board exchange or the LPF added to the DSP board will help by rolling off the high

Re: [Elecraft] K2 / K3 audio - and the K2 fan

2016-06-26 Thread Paul Clay via Elecraft
K2s audio IS sweet sounding, isnt it? :-)(Not meant as a dig at the K3; in my - ok, admitted somewhat limited - experience, Im not sure Ive ever heard an SDR receiver having audio that matched that of a good analogue receiver, K2, Drake R4B, etc., notwithstanding any of the tweaks allowed by