How to Convert a Speaker into a Dynamic Microphone | Recording, Engineering, and Music Production

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4 жыл бұрын

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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:
1-866-BERKLEE (US)
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advisors@online.berklee.edu
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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

Пікірлер: 89

@signalaheadoriginaltunes4159 3 жыл бұрын

You are awesome, dude! Easy to understand and calm!

@cavetradition7380 3 жыл бұрын

This is one of the coolest things

@toooes 2 жыл бұрын

A microphone receives vibrations and a speaker creates vibrations

@hr2186 2 жыл бұрын

Always tin your ends (solder your wire tips) before soldering to desired connection. Been at it along time.

@alpodit-furkanalperenarc-4453 3 жыл бұрын

This is awesome! I wanna make one of these 🤩

@hipnoticbunni8683 Ай бұрын

I really like this guy's work and could not help but hear House every now and then and it just made me smile.

@HelamanGile 3 жыл бұрын

It sounds really good for voice over

@E-BikingAdventures 2 жыл бұрын

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.

@Kareem-Ahmed 2 жыл бұрын

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?

@pierpa_76pierpaolo Жыл бұрын

@@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?

@namman6190 9 ай бұрын

This was my exact Query ....thanks....

@gfj06 Жыл бұрын

Didn't even solder it, I was too lazy to do it but I did twist the wire ends together and it worked great.

@jubalrichey1310 Жыл бұрын

Magnets and voltage, so cool.

@JoeWere 3 жыл бұрын

Dude... DUDE!.... AWESOME!

@fourfourfoureightyfour23 Жыл бұрын

i love that phone, nice video.

@Itlexe 4 жыл бұрын

Старина Лоудон уже без модной причёски, но всё ещё делает удивительно классные вещи! Супер!!!

@GotaSir911 2 жыл бұрын

It works guys, I tried it

@toka944 2 жыл бұрын

Speakers and mics uses different wiring pollarity. So u just need to switch cable pin ends, - to + and + to -

@schautamatic 4 ай бұрын

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! 😄😄

@ulrichbergmann1347 3 жыл бұрын

no transformer or preamp to bring up the signal to a more usable level?

@Tony23267 2 жыл бұрын

Is there a particular kind of speaker that works best?

@WeeklyClipReview 4 жыл бұрын

If you want it to pick up hi end frequencies then remove the spider

@techlots9455 Жыл бұрын

bro, spider means?

@markthornemarmaduke Жыл бұрын

What if you wire it to both .. speaker and microphone at the same time

@oyenations162 3 жыл бұрын

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???

@Oddzilla51 9 ай бұрын

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?

@exitparadise2244 3 жыл бұрын

So you don’t need any sort of electrical connection… The magnets in the speaker create all the e flux needed?

@datavalisofficial8730 4 жыл бұрын

Omg only 3 comments? For a video this awesome?

@shrikantpatil3527 4 жыл бұрын

yuup man i do agree

@tanyi-mbianyormargaret4384 3 жыл бұрын

@@shrikantpatil3527 .

@myyoutube6978 2 жыл бұрын

How would someone be able to send pre recorded sounds to your car speakers? How can one block it

@emaiabrazil 3 жыл бұрын

Can I do this directly to ps 2 or 3 cable to use on my notebook/iPhone?

@internettips854 3 жыл бұрын

mind blown

@lemonhscott7667 4 жыл бұрын

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.

@rayyanibnamer 3 жыл бұрын

what about the sub-woofer

@schipbreukeling3 4 жыл бұрын

Great one, as a kid I used my headphones as a microphone.

@ezzlon3241 4 жыл бұрын

How?

@jeffDavidBerns 4 жыл бұрын

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.

@namman6190 9 ай бұрын

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 ...

@RG-ls2db Жыл бұрын

this was a video about cutting wire and soldering

@theway718 2 жыл бұрын

Hello bro.. wao what a creativity. I am also interested in this type of works. Please keep updating us. 👍👍

@cometobrazil9916 3 жыл бұрын

So, you can turn a microphone into a speaker?

@HelamanGile 3 жыл бұрын

Yes I accidentally do it all the time plugging my Dynamic microphones into a speaker port

@DokuFREENET 3 жыл бұрын

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^^^^

@JoeWere 3 жыл бұрын

You can turn a literal vibrator (or most of DC motors) into a speaker. ;-)

@ujjwalacharya3843 3 жыл бұрын

the quality of the microphone that u made was better than that you are using

@poypoy9028 Жыл бұрын

Yup that's what you call reverse bias 🤣

@josefamekemeke2931 Жыл бұрын

You can also use your head phones as a microphone. Found this out a long time ago

@trivedi007shubham 3 жыл бұрын

I am curious on that can we use microphone as a speaker?

@danzirvine 3 жыл бұрын

if it is a dynamic mic then yes.

@RainRedMusic 4 жыл бұрын

Speaker ASMR

@pierpa_76pierpaolo Жыл бұрын

But how does a 'speaker work instead of a microphone without adjusting the impedances? In fact I tried and it doesn't work!!!

@ahmeterhanarik Жыл бұрын

Cool

@nitesh7633 3 жыл бұрын

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

@mvg6791 3 жыл бұрын

It require power supppy

@bibekanandajena5020 2 жыл бұрын

Just share the circuit diagram

@kaidenmajarali7665 4 жыл бұрын

Would this work the same if I plug my monitors into an input from my interface?

@samuelhastings9785 4 жыл бұрын

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!

@Rollmops94 Жыл бұрын

@@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.

@jaredcyrus908 2 жыл бұрын

What if you increase the gain?

@jonahselwood7017 2 жыл бұрын

it gets louder

@jasonsully135 11 ай бұрын

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

@mqb3gofjzkko7nzx38 7 ай бұрын

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.

@ringocharmley3941 3 жыл бұрын

Will it still work if you plug it into an amp?

@whollyspokes3645 2 жыл бұрын

Yes of course ! 😀

@awsomedude9111 3 жыл бұрын

So what your saying is that radio alarm clocks are actually microphones

@Aki_644 4 жыл бұрын

I searched up how to become a mic because of jungkook 😂

@13strikeasnare 3 жыл бұрын

Having phasing issues because you say polarity really doesnt matter? It matters my friend

@gitshell 3 жыл бұрын

I came here, because of the ASMR videos of people using headsets as microphones. Now everything makes sense.

@EdElectra 3 жыл бұрын

Make a otg type c cable diy please

@alexhutchins6161 2 жыл бұрын

Now can you do it in reverse? Turn a microphone into a speaker? How bad is the sound quality?

@WillBDunn-so1xk 3 жыл бұрын

So all the Alexa speakers and google dots, and Bluetooth speakers are actually like putting microphones in every room in your house....🤭

@metaltrucker97 3 ай бұрын

Why not just put an audio jack on the speaker so you don't have to dismantle and permanently fix a cable to it

@fandorgaming 3 ай бұрын

and that's how you do asmr

@phaybridges4291 Жыл бұрын

🤯🤯🤯

@GremlinPuke 3 жыл бұрын

Dad's friend did this in prison

@Acem8887 3 жыл бұрын

wow thats impressive 😳 why did he do that tho?

@thechoripankiller 4 жыл бұрын

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?