Replies to This Discussion

Permalink Reply by QGolden on August 21, 2016 at 12:43am

Which is logical, since the Piezos are responding to vibrations in the surface that they are attached to, larger surface=more vibration detected?

Permalink Reply by John Sawyer on August 20, 2016 at 4:00pm

What WF said. I found that 20mm piezos do not have enough output power... 25mm is my favorite....

Permalink Reply by Thomas "Duck" Petry on August 21, 2016 at 3:27am

I have had great results using two 20mm piezos wired in parallel.  It seems like there are lots of ways to "skin the cat", the problem is getting the cat to agree to the process.  Experiment with different set ups and see how they work and what you like best.  Don't build them all the same or you'll never know what you are missing.  Most of all, have fun and keep building.  I'm working on builds 25, 26 and 27 right now, the biggest problems have been finding places to hang them.  I'm running out of wall space.

Permalink Reply by The Bane on August 21, 2016 at 3:34am

Definitely want a deeper bass type sound, so bigger is better?

Do larger piezos pick up more of the handling noise though?

Thanks to everyone that has responded, it is appreciated!

Best,

The Bane 

Permalink Reply by Thomas "Duck" Petry on August 21, 2016 at 3:57am

Regardless the size of the piezos used, it seems that running a pair wired in parallel takes a bit of the high pitched sounds away.  It has something to do with the impedance.  Someone had a post on here about the effects of size on sound an cut one in half and it worked as well as a full disc.  Were currently on our Great American Train Adventure an away from home so i don't have time to search the site, but there are lots of posts and pages here on the Nation that cover the subject.  Use the search feature at the upper right corner of the page and get a favored beverage and some snacks.  Lots of reading material to peruse.

Just remember, at the end of the day, it's a stick in a box and have fun.  It's always fun watching folks hear a CBG for the first time and seeing their reactions to the sounds that can be made from one.

Permalink Reply by Bama Hound on August 21, 2016 at 4:48am

      "Just remember, at the end of the day, it's a stick in a box and have fun.  It's always fun watching folks hear a CBG for the first time and seeing their reactions to the sounds that can be made from one." Duck

    Testify my brother,testify!  No larger truth has ever been spoken, specifically your on point #2. I have seen many a jaw hit the floor,it never gets old. hee hee ( ;-)) BH

Permalink Reply by The Bane on September 4, 2016 at 9:51am

Thank you all for the replies. Cribbing two CBGs together now. Have other issues long before having to worry about piezos. I guess I got the cart before the horse. Good information for once I get to that point though. Thanks.

The Bane