Thanks Paul, That makes a lot of sense and like I said I am not complaining one bit on the K3 audio. I main point I was trying to make was the K3 doesn't have excessive bass in stock form or from what I have seen in any form.
I will send you my plots later, I have a QRP meeting tonight to get ready for. However I still don't see much difference on bands 2 on any output, but I will experiment more tonight. To be honest I don't use the EQ at all, my K3 stays on digital most of the time! The problem is one guy will add a comment to this thread, then a guy like me will comment on that and now it is getting away from the original subject line. So I am changing this now and will be my last post on this subject unless someone would like me to run a test, etc. Just commenting on what I see, hear, and can measure. 73 de jay/w5jay.. >> 1 and 2. On the line output I see a little less bass than the other >> outputs >> and I would expect this since it has a transformer in line that the >> speaker >> and phone output doesn't. In fact I don't see a change if I go crazy >> boosting RX RQ bands 1 and 2. > > Jay, > > Here are my SpectraPlus FFT plots for the IC-7800 (Magenta), IC-7700 > (Blue), Ten Tec Omni VII (Red), and Elecraft K3 (Yellow). Each plot was > taken from the respective headphone output and the volume level adjusted > in order to show an uncluttered overlay. > > http://216.229.20.37/images/ResponsePlots.JPG > > To achieve a reasonably flat low-end response on the K3 requires an FC > shift to about 1.25 from 1.50. But in doing so, note how the high end > response is now limited to about 3.2 kHz (See yellow trace). > > Not surprising, the IC-7700 and IC-7800 traces can be laid on top of each > with a nearly identical response. Both produce a response bump between > 100 Hz - 300 Hz. The Ten Tec Omni VII produces the best overall Rx > response of the four rigs tested. I wish I still had the TS-870 for these > tests as it measured ruler-flat out of the box from 30 Hz to 6 kHz. > > Regarding the K3's Rx EQ, I see substantial Rx EQ changes on bands 2-8 > when adjustments are made, but no change on band 1 when adjusted from one > extreme to the other. It simply has no effect. I've tried various > alternate settings to see if I could engage band 1 to move, but so far, no > luck. It doesn't bother me as I leave the EQ flat. > > Paul, W9AC > ______________________________________________________________ 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
