Replies to This Discussion

Permalink Reply by Ron "Oily" Sprague on August 21, 2014 at 2:48pm

Try it and see...;-)

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Permalink Reply by Mike on August 22, 2014 at 10:19am

looks like I'll have to. Thanks

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Permalink Reply by Skeesix on August 24, 2014 at 4:56am

The piezo rod is several piezos wired in parallel. Each piezo you add cuts the impedance in half. So adding a disc piezo should cut the impedance in half again.

However, if you already have several piezos in the circuit (assuming it's 3 for example), adding a 4th one will have a smaller effect because it's 1/2 of 1/2 of 1/2  or 1/8. So it's going to make it sound 1/8 better.

That all being said, I would be interested in hearing the results of your experiment.

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Permalink Reply by Mike on August 24, 2014 at 5:28am

I have now wired the rod and disc in parallel, but added a switch to switch the disc in or out. The result is the switch acts like a gain switch, because not only is it louder with the disc in circuit, but the disc itself has a lot higher output than the rod, so it is hard to detect any sound from the rod when the 2 are in circuit. However, I think the rod contributes subtly to the overall tone, which I think is quite pleasing. Thanks.

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Permalink Reply by Ron "Oily" Sprague on August 24, 2014 at 7:52am

Mike,

So it worked. Kewlsville.

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