Death By Bass
New Member
umm, isn't a higher efficiency piezo tweeter a more logical thing to do? :s
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Dr.EM said:Death By Bass makes a good point, if you haven't aready tried to find a more efficient piezo, then that could bring about some serious improvements.
mramos1 said:Later I found out a "Nigel Goodwin" was wrote up in a magazine for making a piezo louder and not adding parts to a PIC circuit. It works.
A bridged amplifier can use a single power supply voltage and no output coupling capacitor is required.Dr.EM said:Very well, I will just assume this is an effect of capacitance.
18v, so running this at 15V would be no problem.audioguru said:The Cmos 555 has a max supply voltage of only 15V.
I didn't know that Intersil was still in business.Hero999 said:18v, so running this at 15V would be no problem.
You will find lots of efficient piezo beepers that produce mostly only 4kHz.rrch123 said:When looking for another piezo I found one that works at 108 db, but it's freqency range is 1Khz.
audioguru said:Digikey stocks about 100 piezo beepers. Pick one and look at its datasheet. It will have a huge peak at about 4kHz and nearly nothing at any other frequency.
You might get lucky and find one that produces a 5th harmonic at 20kHz.
Look at the high prices for ultrasonic piezo beepers. They are rarely used by anybody.
Motorola stopped making those awful-sounding whistles years ago. Maybe somebody makes a copy. I saw a frequency response plot and it varies all over the place, many nulls and resonances.Nigel Goodwin said:Presumably what he's wanting to use is a piezo tweeter?,
rrch123 said:So what would be the the best for me with this project? Piezo beeper or a tweeter?
Yeah.rrch123 said:Am I getting ahead of myself?