[CW] Resonant CW Speaker

[stan levandowski]

I built the resonant speaker in the current QST.  It "works" in that I 
certainly hear the "peak" with my 600 Hz sidetone and I can tune a CW 
signal and hear that "peak" also.  However, there is NOT ENOUGH VOLUME.


I used the exact parts that the author used; ordered them all "fresh" 
from Amazon so no "junk" from the junkbox was implicated.


I figured I had screwed up, so I built a second one, thinking I might 
have a speaker anomaly.  The second speaker was the exact same speaker 
called for in the article also.  Same exact results.  If I screwed up at 
least I was consistent ;-)


If anyone builds a resonant speaker that produces sufficient volume, I'd 
like to get in on the details.


Clearly, I see where resonance has value but I just can't get the volume 
I need.


I now wonder if the 1/8" centered hole in the plastic was suspect since 
the recently posted Youtube video clearly had something on the order of 
1/4" or larger.


73, Stan WB2LQF


On Mon, Feb 06, 2017 at 04:11 PM, Howard wrote:

> Steve Weber also has a really easy to build resonant speaker that
> might prove interesting to some.
>
> http://kd1jv.qrpradio.com/resonatespkr/CWSPKR.HTM
>
> I built mine a few years ago, and am pleased not only with its
> performance, but with its looks as well!
>
> 73 de W2AFD
>
> On Fri, Feb 3, 2017 at 8:52 PM, D.J.J. Ring, Jr.  wrote:
>> I watched a few of the YouTube videos, this one seemed most 
>> informative.
>>
>> Steve Ellington, N4LQ has a SkyTec speaker which he dissects and 
>> shows
>> you the secrets inside.  He also explains the principles of these
>> resonant tube speakers.
>>
>> https://www.youtube.com/watch?v=MF8bk6958Hg
>>
>> Bravo, Steve, very well done.  Thanks for sharing!
>>
>> 73
>> David N1EA
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