[Elecraft] K3 Speaker buzz - But which external speaker ?

[Don Wilhelm]

Iain,

May I suggest that you find a pair of efficient speakers rather than 
just one.  Even if you do not have the subRX, you can enjoy the 
enhancement offered by the AFX effects.
I am not going to mention any specifics because I just don't know. If 
you want shortwave listening in addition to ham bands, you will want 
high fidelity speakers - I would look for a pair of "bookshelf" 
speakers.  The ones I was fortunate enough to find in a 2nd hand store 
are old Radio Shack Optimus speakers which are cubes with the height 
about the same as the K3.

Computer speakers will work fine, but most are amplified and can respond 
with nasty noises in the presence of RF.  If you can find a pair of 
shielded speakers, that effect may not be a problem.

So shop the 2nd hand stores in your area, and maybe you can find 
something suitable at a very low price.

BTW, the Elecraft speaker now has a 7 inch wire and connector attached, 
so replacement is simply a matter of loosening the hardware and 
attaching the new speaker - no soldering.  I have to remove that wire 
when building a K2, but for the K3, it is a perfect fit.

73,
Don W3FPR.

On 11/6/2012 3:18 PM, g4sgx at justfans.co.uk wrote:
> Hello,
> Well after 18 months the buzzing of the K3 internal speaker has
> reached annoying proportions.
> For a while it faded after switching on for 10 mins but now its a
> constant resonance at 580 Hz. Great for CW! (not)
> Because of the above I am sure its because the coil has shifted in the
> speaker slightly rather than any sympathetic resonances from the case.
>
> I'm not complaining, I understand if I contacted Elecraft I am likely
> to get a replacement speaker sent out, (Its a well documented 'extra
> feature') but really haven't got round to it, nor am i likely too,
> well down the list of priorities!
> Will probably order it along with a set of CW filters when I need them.
>
> I'm REALLY after recommendations for an external shack speaker, or is
> any good HiFi speaker good enough? I would assume some RF shielding
> and good high end sensitivity was more of an issue.
>
> Yours.
> Iain G4SGX.
> Happy K3 Owner :)
>