Stan,

One of your big problems is that the speaker specified in that project is 8 ohms - if you can find a 4 ohm speaker, you will almost quadruple the available audio.

The other solution is to use an amplifier.

73,
Don W3FPR


On 2/6/2017 8:47 PM, stan levandowski wrote:
Hi folks.  I need some assistance.  Is the KX2's headset jack "padded"
to protect hearing?

I'm asking because I built the "CW Resonant Speaker" in the current QST
and it works great but the volume is so low that  it's unusable.
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