Hello Nick,
Sometimes, due to either a manufacturing defect or mechanical shock, the
magnet that surrounds the speaker voice coil will get shifted slightly.
When that happens, the voice coil may come into contact with the magnet
and it can sound pretty bad. Not sure that's what's happening in your
case, but I'd suggest trying a replacement speaker.
I don't have a K3 so the following recommendation may not be relevant,
but I'd also suggest that if you replace the speaker, make a thin felt
gasket that you can place between the speakers frame and the cabinet.
You can probably go to the local fabric store and ask if they have a
small scrap that you can have. Using the gasket should reduce the
likelihood of vibration between the speaker frame and the cabinet.
Haven't followed this entire thread, so apologies if this is a re-hash
of a prior suggestion.
73, Dale
WA8SRA
Nick-WA5BDU wrote:
I tried various things recommend here on the list and I think cabinet
buzz is no longer an issue. But I still have a bad resonance or other
effect in my built-in speaker itself. In decreasing frequency, it
starts buzzing at around 340 Hz, worse at 330 Hz, slight at 320 Hz,
and then gone. I pretty much can't use the built-in speaker. At
moderate volume levels, even band noise excites those resonances and
makes a kind of pulsing, buzzing noise like rough CW.
For additional info - I'm not a musical "golden ear", I don't expect
high fidelity out of the built-in speaker, and I'm pretty crazy about
the K3 overall. Yes, I know I should contact support, but I want to
get my facts together and maybe even make some recordings first.
73--Nick, WA5BDU
Deni F5VJC wrote:
Has anyone found a solution to the cabinet buzz from the K3 internal
speaker?
I've not used the internal speaker until recently on my K3 and now
find I
have annoying cabinet buzz around 450Hz and 600Hz, not so good for CW!
I haven't tried any damping as yet and just wondered if anyone has
managed
to cure this cabinet resonance.
73,Deni
F5VJC
K3 325
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