[Elecraft] LSB/USB Audio

[M1MGD1 at aol.com]

Hello all.
I have been setting up my transmit audio on K2 #4785  lsb/usb,ok here  is 
what ive noticed my usb reports on the conventional usb bands 20/15/10 are  great 
no problems also reports on lsb conventional bands 80/40 are also  great.
When I listen to usb on 80/40 it seems muffled and also the same is true  for 
lsb on 20/15/10 ok this is not a issue as I keep to the lsb/usb band  
conventions but can someone tell me why the audio is muffled in this way is it  
desighned to do this.
 
 
 
M1MGD G-QRP  11355
Elecraft K1 #1532
K2  #4785......................72/73..