so i started this project. its not my first project. I used to muck around with diy stereo 40 something years ago.
Anyhow Trawling youtube has reignited my interest.
To make the best sound system that can be shoehorned into a 1 cubic foot plastic milkcrate. If you go to the Introduce Yourself forum New member Peter from Sydney you can get the gyst of how I've started.
There's even a link to the video I've started to record the project. Works on your google drive account.
Anyhow I need your help. I ordered 2 really cheap horn tweeters from Banggood. They claim up to 30khz and 100 watts. I expect they'll be loud and screechy with not much depth in the mid. Here's a link
Seeking recos for good budget horn tweeters that will fit in a box 90x100x300 mm outside dimensions. They must ship to Australia. I'll keep you posted. Thanks ahead.
All I can say is that the piezo will work, but more than likely will be as you said, a bit on the shrill side. Most are in the 90+ dB range. I know the price is extremely attractive, but you might want to spend just a bit more and get something with a real diaphragm and driver coil. Some may still be excessive, but you'll find more often than not that the majority of them are much more detailed and easier on the ears.
I'd suggest looking at Parts Express to get an idea of what to look for, then scour other sites that would be a better buy for you.
Like I said in your "About" thread, I haven't bought horns in many years, and those were cheap Radio Shack piezo horns. Wish I could be of more help.
You could try DIY Sound Group. I don't know if they deliver to Australia, but you will find commonly recommended compression drivers. I'm certain there has to be a source for the SEOS waveguides in Australia. I think Red Spade Audio is based in Australia, but it may only be articles. It's probably a good resource for finding local suppliers in Australia for compression drivers and waveguides.