How to Convert a Speaker into a Dynamic Microphone | Recording, Engineering, and Music Production
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- čas přidán 18. 12. 2019
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In this video, Berklee Online instructor Loudon Stearns discusses how a speaker can function as a microphone. He explains that a speaker is essentially a reverse dynamic microphone, like an SM57, and that speakers make fantastic kick drum mics. Loudon takes an old speaker from a home theater system and demonstrates how to turn it into a microphone using a soldering iron, an old instrument cable, and a few other tools. Then, he tests the microphone with his interface, showing many different sound effects that can be achieved from the speaker-microphone. This video is from the Berklee Online course Sylvia Massy: Creative Approaches to Recording and Producing Music.
About Loudon Stearns and Sylvia Massy:
Loudon Stearns is an associate professor at Berklee College of Music, a course author and instructor at Berklee Online, and an active media-artist. Within the Contemporary Writing and Production department at Berklee College of Music, he prepares students to work as independent composers and producers in a technology-laden music industry. Online, he focuses on the latest electronic music styles and music-technology innovations, showing students how to analyze contemporary styles and use the latest music technology in their own works. Holding a Bachelor of Music in Contemporary Writing and Production and Bass Performance from Berklee College of Music, and a Master of Fine Arts in Media Art from Emerson College, Loudon pulls from a broad range of skills in the creation of his own multi-media performances that include live music, projection-mapping, dance, visual art and interactivity.
Sylvia Massy is a producer, mixer and engineer, and author, known for making some of the most unconventional recordings in contemporary music. She has recorded Johnny Cash, Prince, Tool, and many others in places that range from regular high-end studios to caves, castles, icebergs, and submarines.
About Berklee Online:
Berklee Online is the continuing education division of Berklee College of Music, delivering online access to Berklee's acclaimed curriculum from anywhere in the world, offering online courses, certificate programs, and degree programs. Contact an Academic Advisor today:
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Berklee Online | Berklee College of Music | Speaker | Microphone | Speaker As A Microphone | Music Production | Creative Approaches to Recording and Producing Music | Sylvia Massy | Loudon Stearns | Guitar | Bass | Overdrive | Johnny Cash | Prince | Tool | Led Zeppelin | Whole Lotta Love | Avatar | EDM | Data Child - Hudba
Always tin your ends (solder your wire tips) before soldering to desired connection. Been at it along time.
You are awesome, dude! Easy to understand and calm!
This is awesome! I wanna make one of these 🤩
Speakers are current driven with a much lower impedance than a typical dynamic microphone. It would work a lot better if you added a step up transformer like the ones used for ribbon microphones. You can make your own with a turn ratio of 1:10-1:30 roughly. You wouldn't need quite as high of a ratio of 1:37 as the ones for ribbon mics since the speaker already uses a coil.
Thanks for your comment. But how many turns in the primary coil is good to be multiplied 10-30 times? Can I grab a small toroid core and wrap 10 turns in the primary and 100 turns on it as the secondary, or 10 is too low?
@@Kareem-Ahmed Could you give a 'practical example? Ex. 4 ohm speaker and I want to adjust it to 8 ohms . How should this be done?
This was my exact Query ....thanks....
I really like this guy's work and could not help but hear House every now and then and it just made me smile.
This is one of the coolest things
A microphone receives vibrations and a speaker creates vibrations
It sounds really good for voice over
Didn't even solder it, I was too lazy to do it but I did twist the wire ends together and it worked great.
Dude... DUDE!.... AWESOME!
i love that phone, nice video.
Magnets and voltage, so cool.
Speakers and mics uses different wiring pollarity. So u just need to switch cable pin ends, - to + and + to -
What if you wire it to both .. speaker and microphone at the same time
no transformer or preamp to bring up the signal to a more usable level?
For the wiring, does it matter which one is soldered to positive or negative? I've read that it needs to be wired backwards from normal, but is that even necessary?
I suspect this has been done to my Sony boom box while I wasn't home. All my speakers go quiet on one side after I get something. This includes my truck. Great speaker system went dead on right side truck door after moving to this city. Everything I bring in house with dual sounds goes dead on one side after a while of having it. Things get moved, and some products get used like Survival Shield from Infowars is now empty. I unplugged the box today and even with unplugged that dead side made a radio sound when I put the jack back in. Also when I switched out the white to jacks the sound on good side went lower in volume. What did this tell you???
But how does a 'speaker work instead of a microphone without adjusting the impedances? In fact I tried and it doesn't work!!!
I've been experimenting with different noise box designs--including a 10-foot trailer with a spring stretched across the entire length 😄😄--but have been frustrated by the inability of piezo contact mics to pick up the low ends. I've read different sources on using speakers as mics, but can YOUR method really be that SIMPLE? Definitely worth a try and, if the signal proves too weak, I have a spare preamp board somewhere. None of this should be very surprising to anyone who's ever used a Navy SOUND-Powered telephone, and there's even a trick the Army has used for their field telephones whenever the batteries ran low: speak into the RECEIVER! 😄😄
If you want it to pick up hi end frequencies then remove the spider
bro, spider means?
Is there a particular kind of speaker that works best?
Старина Лоудон уже без модной причёски, но всё ещё делает удивительно классные вещи! Супер!!!
So you don’t need any sort of electrical connection… The magnets in the speaker create all the e flux needed?
I knew or figured it that Speakers had to be reverse Microphone and reverse circuit ...like the same circuit in where current flows in reverse ....but There are differences in Circuit ......eg one has a magnet the other Mic has a Peizotropic Crystal........but what was or had to be a the way to convert the electric signal from both ......like Are the Ekectric signlas from a Mic are same Voltage or Current as the one goong into the Speaker ??? Or do we need to amplify the Current ...in the Speaker ...via A Transfirmer...Please discuss that ....same wiring would do....same Current ....will flow...or de we need to adjust the resistance of the wire ...
It works guys, I tried it
How would someone be able to send pre recorded sounds to your car speakers? How can one block it
Can I do this directly to ps 2 or 3 cable to use on my notebook/iPhone?
The only thing I want to know is if I connect big speaker into a head phone jack without power supply will it be able to or it requires power supply
It require power supppy
I am curious on that can we use microphone as a speaker?
if it is a dynamic mic then yes.
So, you can turn a microphone into a speaker?
Yes I accidentally do it all the time plugging my Dynamic microphones into a speaker port
I did as a kid, i had a Singstar micophone for my PS2, and i plugged it in to my dads old Walkman, sounded like you tried to record a heavy metal cocert wih an old nokia phone while recording a video, so it was preaty bad, but it worked, so if thers a apocalipse,and the only thing ou have is a mic, it will do the job to listen to the radio^^^^
You can turn a literal vibrator (or most of DC motors) into a speaker. ;-)
the quality of the microphone that u made was better than that you are using
Yup that's what you call reverse bias 🤣
Just share the circuit diagram
mind blown
Omg only 3 comments? For a video this awesome?
yuup man
i do agree
@@shrikantpatil3527 .
what about the sub-woofer
Would this work the same if I plug my monitors into an input from my interface?
In short, no. One thing he forgot to mention in the video is that the polarity has to be reversed for the speaker to work as a mic. Meaning the positive (+) and negative ( - ) leads need to be switched. Hope that helps!
@@samuelhastings9785 Why? The speaker is nothing but a coil. Into this coil a current is induced by change in magnetic field. If you swap polarities nothing changes as the only characteristics you hear are amplitude and frequency. Actually many DAW's let you swap polarities of recordings. If you play a recording twice at the exact same time (one swapped polarity and one unswapped) you hear nothing, which is another proof that the two are identical.
Does anyone know if a speaker can act as speaker and a microphone simultaneously? I would like to do this kind of test :) record sound from that kind of thing
You have to use a differential amplifier to subtract the transmitted signal from the received signal. You also have to impedance match everything for every frequency to make sure that the transmitted and received signal don't come in out of phase. It's difficult but not impossible.
Hello bro.. wao what a creativity.
I am also interested in this type of works. Please keep updating us. 👍👍
What if you increase the gain?
it gets louder
Will it still work if you plug it into an amp?
Yes of course ! 😀
Oh I have a few of these speakers built into the old intercom system of my house. Maybe I should build one of these mics hooked up to a 1/8 in fm transmitter as a mask mic.
Great one, as a kid I used my headphones as a microphone.
How?
Me too, around 25 years ago and now, here I am watching about it to test it again on my violin as the social distancing keeps me in the house, for good of course.
Speaker ASMR
this was a video about cutting wire and soldering
You can also use your head phones as a microphone. Found this out a long time ago
Cool
So what your saying is that radio alarm clocks are actually microphones
Now can you do it in reverse? Turn a microphone into a speaker? How bad is the sound quality?
I came here, because of the ASMR videos of people using headsets as microphones. Now everything makes sense.
Make a otg type c cable diy please
I searched up how to become a mic because of jungkook 😂
Having phasing issues because you say polarity really doesnt matter? It matters my friend
🤯🤯🤯
Why not just put an audio jack on the speaker so you don't have to dismantle and permanently fix a cable to it
So all the Alexa speakers and google dots, and Bluetooth speakers are actually like putting microphones in every room in your house....🤭
oh you think you're so tough well I fixed my headphones by scratching the tin from a chipset and melting it by pressing it with a red hot screwdriver heated up on the stove
Also question, you need a pre-amp to use that, don't you?
and that's how you do asmr
Dad's friend did this in prison
wow thats impressive 😳 why did he do that tho?
Your voice is like of JOHN CENA
A headphone speaker would be more suitable as a microphone than one of those.
I did this by accident once
Baaaaaaaaaaaaaaaaaaa😁😁😁😁🤟🤟👌👌👌👌👌👌👌👌👌🤘🤘🤘🤘🤘😘😘😘💚💚💚💚💚💚🤣😂😆🤣😂😁😂😂😁😆😂🤣
put a frikking resistor in series ...I wander how many already blown their inputs ..bloody amateurs acting as teachers.
how come? why would the signal coming from the speaker be stronger than that coming from a microphone?
@@andvgeo2253 Coil sentivity and pavillion delicateness.. like ears simply... mikes like those are very dedicative and somehow very tough
Yes you can but very no clarity and quality.
haha....... useless...... dont. watch this... he cannot make..😂😂😂 shameless 😂😂😂
olden days Inter com with talk & listen sw. Used the same speaker as micro phone
How much speaker dia & impedance matter in performance, please