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phone into a microphone

I was thinking about trying to turn an old phone into a microphone for a music performance or something? correct me if im wrong and i probably am but, a small crap microphone is a telephone would work would it? i was thinking if i left the whole phone in tact but made the cord come from the phone base into a microphone jack, how would i connect a microphone jack that has 5 legs to a 2 wire phone microphone? it couldnt be done could it? It would work if i just bought a crappy microphone and moved and fitted it into a telephone so it has all the circuit or what ever else is in one already in it I apologize if most of that doesn't make sence

Topic by craig3    |  last reply


Dreamcast Microphone

I have an old Sega Dreamcast lying around and was wondering if anyone had a microphone attachment for it. I am trying to build a microphone input (using an old vmu) instead of buying one offline for 20$+ If you happen to have one I would appreciate it if you opened it up and took some (good) pictures of the circuitry. Pleaseandthankyou, dan

Topic by TheCheese9921    |  last reply


microphone wiring?

Ok i was wondering if i took a microphone that was real cheap from walmart and take the male part off the end of it and put a female part so that way i can plug in a dual male sided cord to it and then to my computer, more or less im wondering, can it work like that? and then i was wondering if there is a program that when i plug the mic in that it works like plugging a guitar into an amp, as in it plays the input to the computer outloud without being in playback from a recording

Question by ClemensY290    |  last reply


microphone help?

I'm hoping that you Audio folks can help me out here. I'm trying to make my own microphone setup for gaming, however the only problem that I am having as of right now is that I cannot figure out how to connect the earbud with the microphone itself. If anybody has any ideas as to how to do this please let me know, I am also hoping that I can do this without an op amp as I have never used them before and am completely clueless when it comes to how they work, if somebody wants to let me know how they work and how to set one up then I'm all ears ( or eyes in this case ) I thank you in advance for your assistance.

Question by Z0n3d0ut    |  last reply


Microphone wiring? Answered

I have a broken microphone. Its wire is cut  inside the insulation. i want to replace the entire cable. when i removed the plastic cover of the microphone i saw a red and a black wire soldered to it.  Therefore it uses only 2 wires but in the connector it is a TRS one not a TS one. i will also replace the connector.  i am wondering how should i wire a TRS connector which has 3 leads. one being the common ground. but the other 2.  should i short them out and connect the red wire or must I connect the wire to only one lead?  Then if i buy a $0.2 TS connector and i wire it accordingly. will it work? One another question does the microphone device has polarity that is should i connect  positive to positive and negative to negative lead. because there is no indication on the Mic?

Question by ARJOON    |  last reply


Microphone how?

I was wondering, How could I turn an old speaker into a microphone?

Topic by batboy61490    |  last reply


Mr. Microphone

I had an idea for a Mr. Microphone, is it possible to modify it to run off my MP3 player so that instead of your voice coming in over the radio its your MP3?

Topic by Robo51    |  last reply


Built-in Microphone

Heres a question, I have a digital audio recorder with a builtiin microphone. I would like to either a) add a jack to plug an external microphone into, or b) replace said built-in mic with a jack. How would one go about doing this? Is it as simple as soldering in the jack? Thanks, Anorath

Topic by Anorath    |  last reply


spy microphone making? Answered

Question by ashok0072009    |  last reply


How to wire this microphone? Answered

I am wondering how to wire this microphone. I took it off an old kit and i am just wandering as it may come in hand. Thanks Oscar

Question by oscarthompson    |  last reply


Mr. Microphone build?

Hi, I was wondering if anyone knows how to build a wireless microphone that can broadcast to a radio like the old Mr. Microphone from the 70s/80s?  If so, can you please post an instructable? The range on it doesn't have to be very far, just a few feet. Thanks

Topic by pennsteve    |  last reply


Help with electret microphone

Hi by checking some information and also some of the projects here, i realized that electet microphones are as good as studio condenser microphones and i was wondering if you can help me to create a condenser quality mic out of an electret element with schematics or actually a tutorial of how to do it the circuit and the pre-amp if necessary ... i got this "http://richard-mudhar.suite101.com/how-to-use-an-electret-capsule-with-p48-power-a150317"  can you check it out and tell me if it would work or give me some other ideas. thnx

Question by Markus03    |  last reply


Microphone to speaker amplifiers

I want to make a microphone to 8 ohm speaker amplifier. I have tried using the lm386 op amp, however, the results were poor. What other IC could I use for this project? PD: It would also be of great help if any of you could send me a schematic along with the new IC since I am relatively new to electronics and still learning.

Topic by MrB12    |  last reply


Microphone and Speakers HELP

I am having a hard time finding answers for this problem, so i am looking forward to some answers from smart people on this website :), Me and my friends use a Voice chat program and weirdly my friends can hear what i hear without even having my MIC plugged in! If i chat with a headset it doesn't occur but without it. They can hear what i hear. Please i will be watching this thread carefully, I really need this fixed! Thank you!

Topic by Jasekillingspree    |  last reply


Direction microphone questions Answered

A few days ago a friend gave me a directional mic he used with his camera.Of course I don't get these things as a working present but to repair them :(Anyway...Taking it apart to expose the inside was the first nightmare as for some reason my friend decided to use a splash proof mic on a totally unprotected cam.If you ever tried to take one of these aquarium tube heaters apart you know what I mean...To my surprise this formerly expensive toy failed due to a bad solder connection, easy to fix.And lucky as well because the actual microphone capsule was glued in place pretty good.A quick test on the computer with the supplied microphone amp showed it worked fine again so I wanted to find out how it actually works.They toy ones use a half sphere or mini dish to reflect the soundwaves onto the mic.My friends however was an aluminium tube of about 20cm lenght.15mm in diameter with the mic being just 5mm and sitting in what seemed to be the end of a little funnel inside the tube - right at the end.So in theory I would now just say the thing gets what comes in from the front, but well that would be far too easy...When I pulled that fluffy sock off the mic I realised two weird things:6 small holes going straight through the mic funnel and outer tube.A glued in relatively soft plastic sleeve with a wave pattern.It seemed this pattern changed on the way down but I could not really see inside properly.Closing the front hole and the mic had no problems getting all sorts of noise from all directions, quite lower in volume compared to a direct hit from the front though.Closing the small side holes with some tape and the mic is still very directional but also really noisy.It seems some acoustic magic is happening in the tube.No real clue though but I guess the sleeve acts like the sound dampening in a test room.Without it all sound entering the tube would reach the mic, while with it really only a very tiny, front facing angle is able to reach the mic.The aluminium certainly transmits some sound onto the mic and the glue appeared to be rock hard as well.So I have to assume that the sound entering through the tiny holes somehow cancels out the noise transmitted by the tube itself.With just 15mm in diameter however I can calculate what I want but am unable to get any true 180° phase shift happening.Looking up how other types of directional microphones work was a bit helpful here but not so much in understanding the holes and liner.My friend said it is well over 30 years old and that he got dirt cheap at a garage sale.No markings anywhere and the small amp only has the connectors for mic, power and output.Did not check the circuit board inside as the housing was glued together.So:Why holes in the side right at the height of the mic?Why does it "hear" all surrounding sound when the front is closed but only directional with the front open?And I mean directional even with some music playing close the mic :(By the way: Battery pack for the mic was the classic four pack at 6 Volt.

Question by Downunder35m    |  last reply


Laptop usb microphone Answered

How to make internal laptop microphone usb?

Question by Mr Qatanani    |  last reply


Microphone sensitivity range?

Can a normal microphone as present in most headsets detect noise levels below and/or  above human audible frequencies. And if so  is it possible to see the audio waveform for such noises using such a mic?

Question by muhammajunaid    |  last reply


Wireless headphone with Microphone

Can anybody tell me how to make a wireless headphone and microphone. Both microphone and headphones should be wireless. I found that one can buy a wireless headphone or a wireless microphone, but not a combination of both. Why I need it. I make long phone calls, during which I need to walk around. If I use a cordless phone, I have to keep holding the receiver with one hand all the time. If I use a speakerphone, everybody around listens to the conversation. Therefore I need one wireless headphone with mic.

Topic by anilsaxena    |  last reply


How to make a simple microphone? Answered

Hi, i want to make a simple computer microphone i have a microphone i removed it from a old telephone and a 3.5mm jack  with four cords 2 positive and two ground.i want the simplest way exists!

Question by ubdussamad    |  last reply


Bypassing the wireless microphone signal

I want to know that is it possible to block the signal from a bodypack wireless microphone and then to send signal from another device like my phone?

Question by harshmittal17    |  last reply


FM Wireless Microphone receiver

About a year ago I got one end of an wireless microphone system at a yard sale. As far as I can tell, it is the sending unit. The recieving unit is lost to posterity, which is why it was so cheap, and has since been collecting dust. It has an RCA line in, 1/4 inch microphone in, a squelch knob, an output knob, a two-foot antenna, and a power button. It says it operates at 49.83MHz FM. I don't have a receiver that will pick up that frequency, and I'd like to know what it would take to build one. Perhaps mod an existing FM radio?

Topic by Rishnai    |  last reply


Need Help in Choosing a Microphone?

I am a  conference speaker that needs to have his own microphone. Had to cope with crappy mics, I need a recommendation for a good wireless microphone ( handheld and lavalier combo). Am  looking at Shure BLX 1288/CVL. Need advice and recommendation. 

Question by JacksonA2  


Speaker and microphone system for a helmet? Answered

I'm getting more and more done on a set of helmets (Daft Punks, to be exact) and ran into a slight snag. While fitting them and what not, I found out people have a hard time hearing me, and I have a hard time hearing them. And this is in a perfectly quite room. So when I do finish these, and start wearing them...I'm going to be a deaf mute. I did some looking, and I know I can at least get my phone worked into it. However, I was wondering if there is either a pre-existing soultion to this, or if someone has any cleaver ideas for a system that will feed outside audio into me, and inside audio out. Thanks in advance! 

Question by DoctorWoo    |  last reply


How to measure distance with a contact microphone?

Hey, I`m trying to create a project about echolocation, so, I´m gonna use contact microphones, give me some ideas mates. PLEASE

Topic by JoséG100    |  last reply


How to make circuit with two microphones?

I need to make a wearable headband that has a microphone by each ear that will record everything that is going on around a person. I don't know what else i might need. I need someone to tell me exactly what i need and how to construct it. drawings might be good. thank youuuuu

Question by PenelopeS6    |  last reply


How to join a 3.5mm Jack to a Microphone ?

I want to make it to use it as a Mic.

Question by Milin 18    |  last reply


Contact microphone to listen to finger-taps

My idea is to attach a contact microphone to the wrist to listen to finger-taps and determine which fingers produce the taps. Assumptions: - The tap sound propagates along the bones like in tubes,  - Each finger produces a characteristic sound signal. - Pattern recognition of sound signals identifies the sound and the finger that produces it. Any help? Thanks

Question by brian.s    |  last reply


Need some help with a microphone Amp Answered

Hey everyone ! I'm trying to throw together a small audio project Using a electrolytic Mic, an amp, and a small speaker, Basically a Hearing Aid. I'm probably going to use small breakout boards (a mic pre-amp, and a power amp) then hook them up to the speaker but I would like to know if anyone has another Idea? Voltage can be 3.3-5V (Running off a Li-po) Speakers are 8-Ohm, 1.5W I'm not looking for outstanding quality, just clear enough to Easily follow a conversation. Preferably from standard components. Any Ideas? Thanks, Wired Mist

Question by Wired_Mist    |  last reply


How to make a simple microphone circuit? Answered

I want to make a simple circuit with a microphone that just takes your voice and sends it to a speaker. I just want to understand how to hook up a mic.  I know it will either be very quiet or silent, but like i said, i just want to know how to connect it. (I already know how to make the amp.)Thanks in advance. -Julian

Question by jules15    |  last reply


Ideas for a playstation 2 wireless microphone

Hi, I was recently given a wireless microphone for a ps2 game called dance UK. The person I got it from didn't want it and I thought it might be useful(I'm a junk collector ;D) it plugs into the controller port and the scart adapter, it seems to draw 12v from the ps2 for the transmitter, has an input cable for the microphone and an output cable to the scart adapter. On the scart adapter there is also a jack for an external speaker. Finally after some thinking about what it needs the controller port for; I decided it might be for volume control (it also says volume control on the bottom :P) Does anybody have any ideas as to what I could use this for? (I don't mind rigging it as long as it's not TOO much)

Topic by pyro-jim  


Blue Microphone Recognized by Pc But Not Working?

Okay so here is my problem I just bought a blue SNowball for my Windows 7 pc I know alot of people have issues with it but heres my problem. I got it plugged it in it says installing drivers then says failed to install drivers yet it recognizes it as a usb audio device but it just shows up in my devices and printers as unassigned with a caution symbol next to it. The thing is there are no drivers for this mic because it is plug and play, I also have tested it in different usb ports to no avail if anyone could help me thatd be great.

Question by Pinion Props    |  last reply


Is this an Microphone amplifier and how to make it by myself?

I don't want to spend 150 USD for this thing :), but I want to do it myself. 

Topic by sbaltov    |  last reply


Microphones, speakers, car batteries and saxophone? Answered

 Ok, so here is my plan. After looking at the GRL's tricycle boom box, I wanted to build a simple pair, involving two large speakers, a car battery, and a microphone. The microphone is because I'd like to make it a giant amplifier, for live saxophone music. Would attaching the a car battery to two speakers, then a microphone work. Or would the speakers just blow? 

Question by JohnJY    |  last reply


How to build a wireless lavalier microphone?

I would like to build a wireless lavalier microphone for my DSLR. My camera shoots HD video and has a 3.5 audio in jack. I have a lavalier microphone that takes a 3.5 jack. I would like to find some cheap(ish) transmitters and receivers (preferably light and small) so that I can shoot and get good quality audio. The transmission range need only be 10 feet but more would be great.  Does anyone have any ideas?

Topic by Crackpot  


Wiring a cb or ham radio microphone?

Hi. I've constructed a 40 metre transceiver. The mike wiring diagram shows ( mic signal / mic ground /ptt / ptt ground).  Can anyone tell me the correlation with  (common / rx / tx / audio) Thanks Ken

Question by kadamak    |  last reply


A preferred source for buying microphone elements?

I have a vintage microphone that is in pretty poor shape. The coil inside the element has broken off on one side and I would have to slightly unwind the coil in order to be able to pass the magnet wire back through far enough to reattach it. On top of that, the transformer inside the mic was wired in a very odd manner and someone has clearly tampered with it, so who knows what has been done to it. I am considering buying a new dynamic mic element and replacing the old one with it entirely. Can anyone recommend a preferred source for buying decent mic elements without having to but a whole microphone? At that, anyone know where to buy vintage mic elements?

Question by randofo    |  last reply




what can I use the sima mini soundcatcher wireless remote receiver for ?

What alternative use can I put the sima mini soundcatcher wireless remote receiver to.  This was designed for a digital camcorder but I wonder what I can do with it alternatively. It is a microphone.

Question by vcipryk    |  last reply


Mic amplifier for ambient sound?

I need a way to pick up distant sound at the mic. I hear output only when i talk too close to mic

Question by Ejay11    |  last reply


can i make a microphone in to a guitar pickup?

Can i make a microphone in to a guitar pickup?

Question by orionskys    |  last reply


How to pass sound from microphone to earphone

Hi, I need a simple way to pass sound from Condenser microphone though wire and some circuit to one or pair of earphone to be heard, live, just a simple communication tool, is there an instructable for this or please give me exact steps . Thanks .

Question by achraf52    |  last reply


Will it work if I use a guitar in the microphone input

Sorry, can't really think straight today I'm just wondering if I got an adapter for a standard guitar cable to fit the microphone input in my sound card, would it would it work as a microphone and record off my humbuckers?

Topic by Chicken2209    |  last reply


Microphone re: Firestart tv and concerns of privacy

I have one of those new 55 in Firestart Tvs . Do I have privacy and security knowing the microphone is not spying on me? Is there any hidden cameras in these tv.s. I really wish I hadn't bought this type either.I don't use it and hate when I accidently press microphone. Going to try to get help getting the microphone out.

Topic by SE60    |  last reply


How to make a direct microphone to speaker circuit?

Hello all, I recently wanted to develop a circuit which picks up voice signals from a microphone and outputs it to a speaker. As I recently started learning to build circuits, I was hoping to get a few inputs and tutorials on how to build one in a step by step manner. Please help by giving instructions and not a circuit diagram as I am still learning. Thanks for all your help! Regards, Microtest

Question by Microtest    |  last reply


how to get a microphone/speakers out of a phone?

i found a cell phone in the road today and im trying to get the microphones and speakers out with out damaging them. help? please?

Question by andyweigl    |  last reply


Fbi sleeve microphone frankensteined in walkie talkie

Drumroll please...it's the world's (or at least instructable's) longest forum post! :D I want to solder a microphone (I ripped it out of an old telephone headset) to a walkie talkie's board in such a way that I can talk into that and have the walkie talkie pick up that instead of the input from the preexisting mike...I figured I would have to use the same old push to talk button, but I would sure like to be able to press a button near the mike to talk. I want to thread the mike up my arm, like a secret agent! The Where would I solder the microphone wires? Do I have to worry about burning/shortcircuiting my microphone or the walkie talkie? Is there any way to attach a talk button so it runs down my arm as well? Thanks!

Topic by Lithium Rain    |  last reply


Threading and pitch for Microphone mount nut or stem? Answered

Does anyone out there know the threading and pitch for a standard condenser mic stem? I lost my mounting nut and even the manufacturer won't provide the info I need. It's a Presonus M7. It should have a standard threaded stem as most universal mounts fit it. I know it's metric, Possibly an M20 or M22 with a #1 pitch. Anyone know for sure?

Question by Sparkytastic    |  last reply


Can a telephone carbon microphone be used with a computer? Answered

I want to use an old 50's telephone handset with my computer for making phone calls with gmail. I know the receiver/speaker will work, but will the carbon microphone work if connected directly? I seem to have come across a few things stating that it will work if connected directly and others that say that a battery or resistor or both is needed. Thanks for any info.

Question by sctirvn687    |  last reply


3.5 mm in line microphone / headphones splitter? Answered

I have got a pair of Sony MDR-1R headphones and a pair or Sennheiser MM30i earbuds, both featuring an in-line remote and mic.  The question I have is: does anybody know if there are some kind of splitters to split the cable in audio and microphone jacks to plug in my laptop? I'd like to use the mic on the cable, rather than the one built in my computer or, worse, wearing skype headphones just to pick up a call.. Thanks in advance!

Question by en_rov    |  last reply