Questions tagged [speakers]

A speaker is a device which converts an electrical audio signal into a corresponding sound. Questions about fixing speakers will be closed as off-topic.

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1answer
996 views

Testing a 0.3W, 8ohm speaker?

I have a 0.3W (RMS), .8ohm speaker coil + cone that I want to test using various music. However, the 8ohm impedance is lower than typical earbuds (24ohm), and also I can't find headphone jack power ...
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4answers
8k views

Square wave / Sine wave is more audible

Consider you have 50 Hz both square wave as well as sine wave put on to a same speaker at different time. Which signal is more audible and what is the reason behind that ? We know that by taking the ...
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1answer
2k views

connect headphone to bluetooth module

I want to connect an old phone to a Bluetooth module. I first thought to use the original speaker and microphone, but the quality is quite bad, so I decided to rip apart an old PC-microphone and cheap ...
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4answers
36k views

What is the typical max voltage out of a PC speaker Jack?

I'm trying to use CD4051BCN chip to channel some speaker outputs from a computer. these chips handle analog voltages from +/-5V. What is the audio line max/min Voltage coming out of the desktop PC? I ...
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1answer
370 views

Headphones with 8 ohm speaker [closed]

How can I build headphones that could play music and fit into a 4mm headphone jack? An example of this would be the headphones that come with an iPod.
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1answer
782 views

How can I hack a Bluetooth mono headset into a speakerphone?

I tried adding a speaker but the audio is too quiet for obvious reasons. I would like to use an 8ohm seapker and i think the headset uses a 32ohm earbud speaker. What kind of amplifier would I use? ...
-4
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2answers
4k views

6 channel Logitech Z-680 surround sound system 1 speaker blown and need help replacing fuse inside sub-woofer [closed]

I've Logitech Z-680 surround sound system for my intel core2 duo computer. The problem I'm having is I can't get the sound to work on my front right speaker. All other speakers work just fine. So at ...
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1answer
182 views

Can anyone identify this Knowles Donau microspeaker connector?

Can anyone identify this type of connector? I need to purchase a bunch of these connectors.
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3answers
3k views

Surface Speaker

Does anyone know what the technology in the "turn any surface in to a speaker" speakers is called? It is all propriety, patent protected stuff and you just use pre made modules or is it possible to ...
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7answers
20k views

Why does GSM cause speakers to buzz?

Based on numerous internet resources, speaker wire acts like an antenna which picks up the transmitted signal of nearby cellphones and causes the speakers to buzz. But I'm not really buying that... A ...
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2answers
4k views

Playing sound with a picaxe

Is there any way to use a PICAXE (08M2, to be precise) to play a small sound file (Not beeps and buzzes, but actual sound), perhaps loaded from an i2c EEPROM chip? I'm thinking something similar to ...
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1answer
893 views

hardware component for playing mp3 [closed]

I have a software + hardware project that I need some help with. I built an algorithm that finds certain patterns in audio, the system works great, I reproduce the audio using a simple mp3 player + ...
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1answer
5k views

Combine left and right channel at speaker level

I recently started a project to build an inexpensive speaker/amplifier that is portable enough to take outside easily. I purchased a center-channel speaker from a thrift store for $6 and an amplifier ...
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2answers
4k views

How to control a speaker

We are trying to produce a sound wave with speaker. We also need to be able to control the frequency (we don't have specific numbers, about 50-500Hz). As far as we are concerned we are looking for a ...
6
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1answer
880 views

What is the physical meaning of resistance and power ratings of a loudspeaker?

What exactly does it mean when it is specified that internal impedance (or resistance?) of a loudspeaker is 16 \$\Omega\$? Is that ohmic resistance of the copper of its internal winding? Or is it ...
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3answers
9k views

Tiny speakers, used in headphones - what are these called?

After having searched Mouser and a general search for "tiny speaker", "small speaker", "headphone speaker", and not having found what I am looking for, wanted to see if someone here can help me find ...
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1answer
358 views

Adding microphone/amplifier to Gumstix Overo Earth COM?

I am new to hardware hacking in general. I have a Gumsitx Overo Earth COM and a Palo35 expansion board with audio in/audio out capabilities. According to Gumstix's wikipage on audio input, the ...
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3answers
15k views

What does the third wire on this speaker do? [closed]

I salvaged two large speakers from an old iPod player/alarm clock device. Each of the speakers have three wires tied to it. There is a positive and negative and a third which I assume is ground since ...
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1answer
308 views

How is it possible to feed the output signal back to input using a TRRS connector

I want to be able to "play" the output signal back to the device (in my case an XPERIA X10 which i think uses a standard TRRS plug) so that everything that is output by the device comes back to it. ...
4
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3answers
3k views

Shouldn't these headphone wires be insulated?

My headphones sometimes don't put out sound in one of the channels, so I opened them up and this question came to mind: Shouldn't the 3 copper cables that connect to the mini-jack be insulated? One ...
2
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3answers
5k views

Testing an 8-ohm speaker

I have been trying to test an 8Ω speaker, but I am having some difficulties. I have tried to test the circuit using multisim using the circuit below: I used the 8Ω resistor in the place ...
1
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1answer
416 views

Can I plug 4 Ohm speakers to 16 Output directly?

I have Samsung YP-U3 player with Earphone Output 20mW (16Ω) and I want to connect it with speakers taken out from my old laptop that are two 4Ω (1.5W). Can I do it directly or speaker will break down ...
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4answers
5k views

Can a Computer Motherboard Speaker/Buzzer output voltage switch a relay?

Most 12v relays I've come across require 4v to switch on. I don't have a voltmeter handy to test my computer motherboards voltage output, and if it did give out +4v and held a long enough duration ...
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1answer
8k views

Audio: 2 Speakers * 200 Watt versus 1 Speaker * 400 Watt?

What is the difference between 1 speaker of 400 watt and 2 speakers of 200 watt? All the speakers are 12 inch. Of course, I know the difference is mono/stereo. But I want to play in a little band ...
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1answer
485 views

Do it yourself: baby call monitor [closed]

This is kind of a hobby project (I'm an informatics professional but I always was fascinated by electronics). I want to build a baby call (basically, a one way intercom); to simplify the electronics (...
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2answers
730 views

Nokia X6 headphone not working

I am trying to repair a Nokia X6 headset in which one earpiece is not working. Any help on the questions below would be greatly appreciated. Is there a way to test the earpieces with a multimeter to ...
6
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3answers
60k views

How to determine appropriate speaker cable gauge?

When wiring speakers to a 100W consumer-grade amplifier, how do I select an appropriate gauge cable (for 8-ohm speakers)? Also, if 14 gauge cable is sufficient, what harm is there in using a heavier ...
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5answers
2k views

Any truth behind “multipole” technology in audio signal transmission?

After reading this question about ultra-expensive audio cables, I was reminded of a product that we sold at a company I used to work for. MIT Cables makes these "audio interfaces" which go a step ...
5
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2answers
8k views

How do you tell the difference between speakers and microphones?

How do you tell the difference between speakers and microphones? I pulled the following two components out of an old cell phone and cannot tell them apart. Each have two metal contacts on the back.
2
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1answer
283 views

I'd like to swap the speaker on an electronics kit for a reed relay

Morning all, I've built the Velleman IR Light Barrier kit: http://www.vellemanusa.com/us/enu/product/view/?id=350693 It currently beeps when the light barrier is broken, but I'd like to remove the ...
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1answer
97 views

ipod dock upgrade for inmotion speakers unit

I have an inmotion speaker set with embedded ipod dock circa 2006. I love it and it sounds great. But the dock does not work with the newer model ipods / iphone etc. I'd like to try my hand at hacking ...
4
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3answers
3k views

Can I use a subwoofer as a linear actuator?

I need an actuator with a few mm of travel and it has to be very responsive to a very low frequency (DC 10 Hz) sine wave generated by a function generator. I'm thinking of getting a cheap subwoofer ...
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1answer
165 views

BASIC Stamp and external speaker

How to connect a real external speaker through a classic Jack connecter to the Board of Education? So that I can send it FREQOUT instructions? (instead of using the piezo-electric component)
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1answer
5k views

Control 5 V buzzer using 5 V microcontroller (which can't drive it directly) and a single 5 V power supply?

I have a PB-12N23PW-05Q buzzer and I'm trying to use it with ATmega 162. I can't connect it directly to pin, because from what I've read from 162's datasheet, it can source at most 20 mA. The buzzer ...
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2answers
3k views

Roland Microcube guitar amp damaged beyond repair?

My power regulated ac/dc adapter broke the other day and my friend thought it was a good idea to cut the wire from the mains adapter, trim the ends and plug this directly into the mains. he then ...
31
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4answers
285k views

Headphone wire color coding

How do I tell which wire is which if I have a copper wire, red and green coded wire? Is the unshielded copper wire ground?
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4answers
3k views

building an audio amplifier for 2.5 ohm speakers

I recently dug out of my box o' stuff a pair of seemingly decent 2.5ohm bookshelf speakers. I wired them to an old mp3 player I have and while they sound good at low volumes, I get lots of distortion ...

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