I am still using the original washers, but I have put two nuts on each of
the four screws to prevent the nuts from falling into the rig.
Steef PA2A
K3 #1184
----- Original Message -----
From: "Nick-WA5BDU" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Friday, August 01, 2008 8:26 PM
Subject: [Elecraft] K3 - speaker buzz
A month or so ago there was a flurry of posts about buzz in the speaker.
On poster replaced fiber washers used to mount the speakers with neoprene
and reported good results.
With my sidetone level set at about 45, I heard pronounced buzzing at 350
and 400 Hz sidetones. (Adjust your sidetone level with MON, then go to
PITCH and adjust the sidetone pitch throughout its range.)
Since I had to pop the top to install my back ordered 6kHz filter, I took
the opportunity to replace the fiber washers with improvised ones made
from small grommets sliced in half. I did get some improvement. Now the
major buzz is limited to 350 Hz. In putting some slight finger pressure
at various places on the top cover, I see that the speaker isn't at fault
but that the top plate has some resonances. I'm thinking of putting some
kind of resonance killers on the underside, maybe some globs or beads of
RTV or similar, so as to avoid any kind of permanent change to the rig.
Anyone else done anything similar?
73--Nick, WA5BDU
#1195
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