[Elecraft] K2 -- RX audio

[Marteinn Sverrisson]

Hi

While trying to improve the K2 RX audio response specially for SSB,
I noticed lack of low frequencies, looking at the schematics I find
the the LP cutoff is abt 640 Hz, determined by C25, C26 and the 5k vol
pot ( this is wheather using DSP or not). 
By increasing C25 and C26 to 0.2uF (from 0.1uF) the LP cutoff is
moved to abt 320 Hz. This makes better sounding SSB signals and also helps
in CW mode when copying low pitch signals.

To lower the LP cutoff, I soldered 0.1uF SMD caps across 
C25 and C26 on the control board. To my ears K2 now sounds better.....

73, Matti

ps. I use 2.4 kHz X-Tal filter
-- 
   Marteinn Sverrisson    TF3MA
          Langitangi 2    Internet: tf3ma [at] raunvis [dot] hi [dot] is
        270 Mosfellsbær   http://www.raunvis.hi.is/~tf3ma
               Iceland