[Elecraft] K3S subreceiver sound "problem"

[Robert G Strickland]

I put "problem" in quotes because it's not clear where the "problem" is: 
me or the radio.

I recently purchased an Elecraft assembled and tested K3S with a 
subreceiver and its own 400cps filter. The main receiver has the 
following filters: 2.8, 1.9, 500 & 200. When I listen to both receivers 
through good quality headphones, the subreceiver sounds muffled, dull, 
maybe a bit less volume when the gain and audio settings are identical, 
all the while the main receiver is crisp and clear. Reversing the head 
phones reverses the effect which, I think, rules out my hearing and 
hearing aids.  Reversing things with the A/B switch makes the left 
channel muffled and dull. I've tried a whole lot of different setup 
parameters, read the manual and Cady's book carefully, but I can't come 
up with anything the brightens up the subreceiver. Any suggestions?
Thanks.

...robert
-- 
Robert G Strickland, PhD ABPH - KE2WY
rcrgs at verizon.net.usa
Syracuse, New York, USA