[CW] Resonant CW Speaker

[Benny Owens]

STAN

BILL GAVE ME SERIAL NUMBER 5 OF THOSE SPEAKERS.  IT IS AMAZING BUT I
NOTICED IF I TILTED IT TOWARD ME THE VOLUME INCREASED.  I HAD SOME OLD
QSL CARDS FROM A PAST QTH AND TAPED ONE AROUND THE TOP AND SIDES OF
THE PVC ELBOW AND IT SOUNDS NIGHT AND DAY LOUDER.  I HAVE BEEN USING
IT FOR ALMOST A YEAR NOW AND LOVE IT.

73
BENNY K5KV

On Mon, Feb 6, 2017 at 4:54 PM, stan levandowski <sjl219 at optonline.net> wrote:
> 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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