[Elecraft] K3S In-Depth Review Coming Soon?

[Wayne Burdick]

We've made several changes to improve audio over years, and a K3S incorporates all of them:

- K3:  improved 12VDC decoupling to the AF amp
- K3:  added a dual low-noise LPF to eliminate residual sampling noise (mostly at 12 kHz)
- K3:  corrected DSP AGC algorithms, which were non-monotonic at some signal levels
- K3S: redesigned AF output and driver stages for lower IMD

Taken together, these changes provide a low-distortion, essentially flat audio passband. Most other modern transceivers use the same (or similar) class-AB final AF amp devices that we use in the K3/K3S, so how it sounds comes down to how RX EQ is set up, as well as the LO-CUT/HI-CUT (or shift/width) settings.

73,
Wayne
N6KR



On Oct 27, 2015, at 1:10 PM, Vic Rosenthal 4X6GP/K2VCO <k2vco.vic at gmail.com> wrote:

> Operators disagree about K3/K3S audio.