Voltlog

[@TheKetsa]

I'd have liked to see the dbA of those last two buzzers at 5v.

[@aidenthecomputernerd]

7:20 sounds like ComTest

[@gamerpaddy]

bad test distance was not consistent also where the port was facing was different on every test.. and you should generate the buzzers fs (resonance frequency) for best output. usually found on the listing or datasheets. better move the spl meter 1m away from it then the port direction is not so critical. in the middle of the room otherwise walls reflect the sound and may amplify

[@voltlog]

Datasheets are hard to find or correlate with these ebay findings. The test although not as thorough as some of you may like, it does provide useful information and any way you test it the 24V bigger ones will still have the highest output.

[@ElmerFuddGun]

I have to agree with Gamerpaddy. Whenever doing tests like this you only want to be changing one variable and that is the buzzer. Everything else should remain the same. Changing the direction of the buzzer for example will have a huge impact on the reading. You may not notice at your distance but the meter will. You really don't need a meter to simply find the loudest of such a small number of buzzers.

[@felixcat4346]

I use the biggest buzzer as an audible turn signal for my motorcycle. Works great even while wearing a helmut. Just use any one with leads attached and it should work just fine.

[@TheDefpom]

You should also do tests at different distances (fixed identical ones) to allow for the wavelengths of each frequency.

[@voltlog]

we might get different numbers but the 24V bigger ones should still be the clear winners.

[@komodospider]

Do you know if there are any 12v intermittent buzzers? No continuous sound but like a beeping sound

[@battlecoder]

Nice test! I also prefer active buzzers (require 0 work to use) and bought a few recently. It probably wasn't the goal of your test, but I would have liked to see the loudness of the bigger buzzers at 5V, and the current consumption of each, though. I know buzzers are not going to get much "ON" time on regular applications for the current they use to matter that much in a design, but still; It would have been a reasonable indicator of efficiency (power used versus loudness).

[@voltlog]

you are right I didn't thought about efficiency and that's simply because through the cases I've needed a buzzer I never had to think about it's efficiency, just the working voltage and whether I need it passive or active.

[@battlecoder]

It normally is not an important measurement except for battery-operated devices I guess. A great and very informative video nonetheless.

[@ElmerFuddGun]

But it is important to know how much current you need to drive it. It will tell you whether a button cell will work or if you need a larger battery. Or whether you need an external transistor or if the micro-controller's limited output will be enough.

[@waltperko8389]

What are the part numbers for the active buzzers ???

[@josephkaz9093]

Anyone know where I can source a single tone buzzer that is a low volume and frequency? I want to use it to indicate when a maglock is released allowing access to a door. People instinctively wait expecting to hear a buzz. None of the buzzers I can find fit my sound profile.

[@AutoBodyEverything]

Those are just speakers or tweeters basically correct? Buzz is just because the signal is an actual buzz correct? I’m looking for mini tweeters to use for a project.

[@jayashreevilva4829]

Can I able change the frequency of active buzzer

[@Esther010]

If want to achieve 20kHz,then it is necessary to use more buzzer?

[@Ryukachoo]

Would the higher voltage buzzers be much quieter at lower voltages? Like if I tried to run the 24v buzzer on 12v would it not do anything, or just be quieter

[@voltlog]

the answer is simple, less energy going in, less energy going out.

[@tablatronix]

You can drive piezos bipolar/differential for higher sound amplitude, if sound level is your highest requirement. (If their rating allow it, some can do 7,10vOp)

[@voltlog]

yeah, sure we can do that when we need higher sound level but it requires additional circuitry and in some cases you don't want to add additional parts on your board. Cost might be an issue or you might be using an already finished board that has a square wave output to drive a buzzer so it's nice to know which of these buzzers has the highest output for a drop in installment.

[@TheDefpom]

My competition car stereo used to do 136dB

[@voltlog]

I'm guessing you couldn't stand inside the car at that level.

[@tablatronix]

Which ones do you think has the best frequency response ?

[@voltlog]

I don't think it's worth determining the frequency response of a buzzer, I would have to capture the output spectrum in response to a given input. It's just a buzzer, all you care is how loud it is and at what frequency and this is what I'm showing in the video.

[@tablatronix]

VoltLog I meant objectively not really scientifically, I have been testing several on my bench for alert tone generation, musical tone alerts and notification. And noticed some have very small range while some are much wider, specifically magnetic buzzers vs piezo. A simple sinewave sweep or music gen sketch is what I am using to test to my ear. As you say finding datasheets is detective work.

[@voltlog]

@@tablatronix unfortunately I haven't played anything other than simple square waves on these so I can't help there. But it seems like you are after something quite specific and in that case it might be better to go to the big distributors like digikey and scan through the datasheets to find what you need, otherwise you might have to spent hours testing different units you get from china until you find the right one. One other problem after finding the right one from China, is getting it again or getting it in volume. Buzzers used in car dashboard/cluster are usually capable of playing various alert tones nicely so here is another good place to start the research.

[@tablatronix]

VoltLog I have a variety of those smd ones already on their way from china to test to see how decent cheap ones are for reference. Alot of variety available it seems, gonna test the cheapest before deciding if I need anything better.

[@briggsmedia]

Thank you for doing this test!!! I really appreciate it.

[@001FJ]

Beginner question: active buzzer means I can apply DC voltage (e.g. battery) to it and it would work, correct?

[@Siyoufi]

Yes

[@001FJ]

@@Siyoufi Thank you.

[@rahulgupta021]

Is there any buzzer rated 2v??

[@AnanusBananus]

The button that says hold also says bl which could be abbreviation of backlight..

[@Hasitier]

Janne Heino it is a backlight. Just press and hold a few seconds. I have the same meter. Works fine.

[@voltlog]

Hey, you guys are right. It's a nice back-light actually. I should RTFM.

[@AnanusBananus]

And the meter got even better 😋

[@ellpancha]

i have a question, on buzzer 6 and 7 do you just apply voltage?

[@voltlog]

yes those are active buzzers as explained in the vid.

[@ellpancha]

@@voltlog thanks, I want to simulate the buzzer that the new cars have in my old card, like when you lock or unlock the car, what buzzer do you suggest me to that purpose?

[@voltlog]

@@ellpancha you would probably need something bigger for that, like a small horn speaker.

[@globalgourmand]

If you used lower voltage (two AA batteries at--I believe-- 3 volts) would that change the decibel output of the last (#7) buzzer? I would have guessed not but some comments here and in the video commentary make me wonder...

[@voltlog]

I haven't reversed engineered the internal pcb so I don't know if it boosts voltage or not. If it doesn't have a boost inside, then yes you will noticed lower output with lower voltage.

[@BR.]

Thanks a lot for doing this test! Exactly what I was looking for.

[@breaklaw93]

How to add this Piezo Buzzer on multimeter DT-830B? Anybody can share with me?

[@bbreeuwer4577]

For next time, I would recommend a (simple) usb soundcard with phantom power and a microphone. That way you can simply do a sweep/noise burst. More accurate and much faster. :)

[@voltlog]

that sounds more complicated that what i did :-)

[@bbreeuwer4577]

It's in fact a lot easier ;-)

[@waitemc]

Good info if you are like me and year apart a friend's microwave and install very annoying buzzer beepers. Washer and dryers as well . Hehee!

[@stampydragon2739]

Could you send me the larger one of the last two so I can test it on a motorcycle alarm system

[@kioanakos]

Why don't you just click the last link of the description and send yourself a new one?

[@trse333]

It's incredible. Thanks a lot man.

[@greydove361]

First buzzer sounds great for me

[@michaelslinger1353]

I enjoyed it when he made the buzzer beep.

[@Gooberslot]

It looks like that meter is A weighted which means it won't be as accurate at extremely low and high frequencies.

[@voltlog]

I don't know how that will affect the measurement, but being A weighted should be good in this case as we are interested in how the human ear will perceive these buzzers. When you say extremely low frequencies, does that include between 1-3KHz where these buzzers perform usually?

[@Gooberslot]

No, I think 1-3khz is fine.

[@cmuller1441]

Gooberslot yes but they don't output a pure sinewave. This is the fundamental frequency. There's probably a lot of very high order harmonics. On the other hand if we consider that all buzzers produce more or less the same waveform with more or less the same base frequency then we can compare the results. They may not be absolutely accurate but comparable. The main flaws in the procedure is the lack of proper orientation and lack of distance checking. I would have hold all buzzers in exactly the same orientation in a vial for example with the noise level meter at a fixed distance. Sound level decreases fast with distance and those buzzers are probably quite directional. Also the table can reflects some energy so the complete system should be exactly the same for all tests.

[@devrim-oguz]

Very helpful, thank you!

[@Craigthepope]

I hated watching this video but it was very helpful. Thank you.

[@avejst]

Thanks for sharing. A Good test, Interesting :-)

[@voltlog]

thanks!

[@001FJ]

Excellent video! Thank you!

[@ufohunter3688]

Now that you have that sound meter, should we expect the audio level of your great videos to be louder. I often forget turning the volume down after watching one of your videos, then when I go to watch something else, I jump off my seat :)

[@voltlog]

I could try increasing the level in video editing but that might bring up the noise floor. I'll see what I can do about it.

[@ufohunter3688]

Give it a go. We'll give you feedback on how it sounds.

[@越前くらげ-t9o]

thank you! Very useful video!

[@ThatOneExoRailfan]

I have a buzzer thats 91db

[@MAC-ez2rq]

Tnx for the review.

[@widya2550]

thank u so much

[@ThatOneExoRailfan]

3.3.kbuzzer

[@NitrosDen]

there's a free app on the phone that measures db, don't waste your money