The COMSpkr is rated at 3W per channel ... barely better than the 2.5W
per channel of the K3. A good pair of bookshelf speakers will provide
everything that the COMspkr does with arguably better sound than the
small speakers in the COMspkr enclosures.
A good technician can probably make a $10 pair of computer speakers as
"RF proof" as the COMspkrs just by installing the RC RFI suppression
networks most manufacturers leave off the standard amplifier board!
73,
... Joe, W4TV
On 11/6/2012 5:00 PM, Fred Smith wrote:
> IMHO the best bang for the buck are the West Mountain Radio COMspkr for $39
> they have no equal. I have speakers in the shack that cost up to $400 ea.
> and these sound the best on my K3's and Never any RF on them with legal
> limit ++.
>
> 73,
> Fred/N0AZZ
>
> -----Original Message-----
> From: elecraft-boun...@mailman.qth.net
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of drewko
> Sent: Tuesday, November 06, 2012 3:10 PM
> To: Elecraft@mailman.qth.net
> Subject: Re: [Elecraft] K3 Speaker buzz - But which external speaker ?
>
> I am using a pair of MFJ-281 Cleartone speakers with my K3.
>
> Some say they are fantastic; some say they are junk... But they work well
> enough for me for CW and SWL. They peak around 600-700 Hz. I would prefer a
> little lower, 400-500 Hz, but they work ok in that range. And no buzzing
> anywhere that I have heard. They also look like they were made to match the
> K3.
>
> As for RF, I have had no issues with them. The lead-in of my end fed wire
> antenna is inches away from them (though I do only operate 10 watts output).
>
> 73,
> Drew
> AF2Z
>
>
> On Tue, 06 Nov 2012 20:18:45 +0000, Iain G4SGX. 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 :)
>> ______________________________________________________________
>
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