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Old 6th May 2018, 08:59 PM   #11
planet10 is online now planet10  Canada
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Originally Posted by Fast Eddie D View Post
… piezo tweeters can be tamed with a crossover…
Frugal-phile | Piezo Tweeter Crossovers | J Risch

community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
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Old 8th May 2018, 11:14 AM   #12
OffGridKindaGuy is offline OffGridKindaGuy  United States
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I've had good luck with shorting the Piezo with a 22 ohm resistor and adding 33 ohms in series from the source as a starting point. (No cap of any kind) The series resistor can be changed in value to change the output level.

A piece of a cotton ball installed in the cavity behind the Piezo element/diaphragm helps with the internal rear reflections. (Don't pack the area too tightly) PITA to unsolder the element leads to get enough room to install the cotton but IMO.. It's worth the effort!

There are still some reflections in the horn area that I believe flocking may change enough to get the sound that I'm looking for. So.. Flock It! It'll be another thing to mess with..

A 6.5/8" full range driver, A BSC circuit (.8/1mH) and some various low ohm resistors are ingredients for a simple 2-way using a Piezo..
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