I built one once with a 2-1/2" (6.4 cm) diameter PVC tube. Unfortunately
I don't remember the exact length, but it was about 7" (18 cm) long. I
simply glued a 2-1/2" speaker to one end. It resonated at about 600 Hz.
At one point I placed a tightly fitting lid from a spray can over the
back
Stan,
Thanks for the video, most impressive.
I have one comment regarding the need for an amplifier with the KX1 /KX2 or KX3
radios, there is another YouTube video from a couple of years ago that appears
to be almost what the more recent QST article is based upon and in it the
constructor has
ndowski'; Elecraft@mailman.qth.net
> Subject: Re: [Elecraft] (OT) Follow-up on CW Resonant Speaker
>
> Stan,
>
> I have built three of the resonant speakers per the QST article. I am using
> a K3s and have plenty of audio without an amplifier. The three speakers were
> all in the
Subject: Re: [Elecraft] (OT) Follow-up on CW Resonant Speaker
Stan,
I have built three of the resonant speakers per the QST article. I am using
a K3s and have plenty of audio without an amplifier. The three speakers were
all in the ballpark of 700 Hz. I took a 2 inch coupling and put on the
street
levandowski
Sent: Monday, February 13, 2017 7:49 PM
To: Elecraft@mailman.qth.net
Subject: [Elecraft] (OT) Follow-up on CW Resonant Speaker
Folks, I posted about having built the CW Resonant Speaker in the February 2017
and having problems with low audio. This is a follow-up report for those
Folks, I posted about having built the CW Resonant Speaker in the
February 2017 and having problems with low audio. This is a follow-up
report for those with interest in this subject.
It works! It's fabulous! It's unbelievable how great it sounds! CW
pops out and background noise is
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