[sdiy] NEWBIE REQUEST; PIEZOS

[Toby Paddock]

Harry wrote:
>I use piezos IN the plastic case.  I use a small "wadcutter" pellet
>(pellet gun ammunition with a flat nose) epoxied to the center of
>the piezo disk. This lowers the resonant frequency and makes the
>low-end response much better.

Still a cool idea that I still haven't tried. Still need to try it.

>You can make a capacitive divider to lower the voltage... but it 
>will mess up the frequency response. 

Have you tried this? Does it really roll off the highs?

>Now you kids go away and don't bother yer elders. I KNOW 
>you are gonna put these on I-Beams and Anvils and Tuned 
>Brake Drums (yeah try it) and keep me up all night with yer 
>bangin' on em with ball-peen hammers... and then
>AMPLIFY the result...

I'm finding myself tapping on everything around me to see what 
they sound like. Saw my 7 year old son hit a steel railing and 
then stick his ear on it. Must be catching. 

>...and call it "music"

No Dad, I won't claim that.

>ok I'm down with it  ;^)
>H^) harry

Pedal to the metal,
 - -- -  Toby Paddock