Questions about fixing speakers will be closed as off-topic.

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0
votes
1answer
17 views

VS1053 with SMD speaker, amplifier necessary?

I am working on device that looks a bit like a tablet. It consists of a display and a software controlled by touch on it. It uses the SAMA5D3 MCU from Atmel running linux. I decided to implement ...
0
votes
0answers
24 views

Amplifying speaker connected to 555 tone generator [closed]

I made a simple tone generator using multivibrator NE555, which is connected to speaker. Everything is okay, but spekaer is not loud enough (I want it to create Chladni plates), so I want to amplify ...
0
votes
1answer
39 views

Sending power to passive subwoofer via RCA connections

I have a home theater receiver with a powered subwoofer output and a matching passive subwoofer. I've always connected these two items using speaker wire. Recently I moved into a place that has ...
-2
votes
2answers
61 views

Suggestions for a simple microcontroller [closed]

Please suggest a simple digital solution for an equalizer implementation. I am not looking for any feature heavy DSP based IC, since my application only requires some minor adjustments on the bass and ...
1
vote
1answer
93 views

What is the best way to play music through speakers

I have these speakers I recovered from an old iPod dock. I want to hook these up to a big remote control truck I have but I have never worked with playing music. What is the easiest way to get ...
1
vote
1answer
29 views

ASP solution for sound enhancement [closed]

I built a stereo speaker and to an extent it sounds good. But I noticed, by changing the EQ to "Rock" genre in my MP3 player, the instrument clarity became more clear and vocals were more fuller, ...
-2
votes
1answer
46 views

What could cause sound system to occasionally become weak and mono until clicking 'Test' in Windows? [closed]

edit I am not looking for a repair, I am trying to learn about what could cause the strange behavior simply for the sake of science. Ok so I have an old Yamaha sound system that is mostly broken ...
0
votes
1answer
75 views

Blocking capacitor? Driving 8 ohm .5 watt speaker with microcontroller

I'm reading Make: AVR Programming. The next project wants me to try to drive an 8 ohm speaker with a pin from the microcontroller. I'm no EE, but I do know that 8 ohms is not a lot of resistance, and ...
2
votes
1answer
42 views

Which speaker is better for an application based on it's datasheet

Given two speakers and their datasheets what should I be looking at to determine if one is better for me than the other? I realize this could be a broad question, but I'll frame it in my context. ...
1
vote
1answer
55 views

What connector is appropriate for a 500V electrostatic speaker?

A research group just bought an electrostatic speaker that came with a long cable that is meant to be soldered to the speaker wires. However it would be more convenient to have a connector(s) there. ...
6
votes
5answers
2k views

Can computer speakers emit ultrasound?

Can computer speakers emit ultrasound? What is the maximum frequency that computer speakers can produce?
0
votes
0answers
53 views

using a sycnrhonous motor to drive the voice cone in a speaker

It is possible to consider any arbitrary signal as a continuous function of phase and amplitude. In particular, a digitized audio recording (assuming Nyquist was satisfied) can be transformed into a ...
1
vote
1answer
83 views

home audio: How much current flows through my speaker amplifier's output?

In a recent project I used relays to electronically control a multi-room speaker selector. I wired these relays in parallel with the physical switches in the box. When I was designing it, I wasn't ...
0
votes
1answer
59 views

Matching an amplifier to speakers and subwoofer [closed]

I've got a couple of old Bose speakers and bass and I'm looking to wire them with an amplifier so I can use them with a computers sound card. The speakers' manual can be found here. For the speakers: ...
1
vote
2answers
115 views

Amplify speaker with 9v battery and one transistor

I started electronics recently and I'm trying to make the most basic mp3 amplifier. I try to amplify the music from my phone to the speaker. My phone already amplifies the sound when I connect it ...
1
vote
2answers
100 views

Is it possible to figure out the specifications of an electronics piece without datasheet?

I'm brand new on the "electrical engineering" scene with my Arduino and I have a question about random electronics. I've been taking apart some old phones, salvaging LEDs, motors and speakers, mostly ...
1
vote
2answers
49 views

Voltage of a sine wave given max wattage rating

I would like to test a speaker by giving a sine wave of 200 Hz. On the technical datasheet following are mentioned Sine Wave : 30W Maximum music load : 60 W Frequency Range : 40 to 2000 Hz ...
1
vote
2answers
63 views

I have a .75 Watt/8 ohm speaker. Do I need to use an amplifier, what specs should I look for?

I salvaged a pair of speaker drivers from USB-powered computer speakers that is .75 Watts/8 ohm per channel (2 channels total, L/R). I want to be able to drive audio through it and have volume ...
7
votes
2answers
730 views

Use of 100K ohm resistor along with 0.1uF capacitor?

In the circuit diagram below, why is there a 100KΩ resistor (NOT R2) connected to the capacitor? To my understanding the capacitor-resistor act as a high pass filter to block the DC offset of ...
0
votes
1answer
97 views

MP3 Player: Disconnect 3-watt speaker from amplifier when headphones are plugged in using MOSFETS and the isolated switch on an SMD 3.5mm stereo jack

Can I use Mosfets to disconnect a 3-Watt speaker from an amplifier circuit without any loss of sound quality? I'm using a microcontroller controlled MP3 player called a Flyron FN-M16P, which features ...
-1
votes
1answer
66 views

Is This Black Foil in Front of the Membrane Part of the Speaker?

I bought mini speakers from Kepo (KP3246SP1), they have some kind of black foil in front of the speaker membrane. See the picture below: Is this black foil part of the speaker, or is it packaging ...
0
votes
1answer
92 views

What frequency range is acceptable for a speaker in an audio amplifier

I am building an audio amplifier using a lm386 amplifier with a 12 volt supply driven from a headphone jack. I am looking for a speaker that will work well in this setup. Currently I am using a ...
1
vote
2answers
49 views

Controlling speaker that has 4 interconnected pins

I am fairly new to and interested in electronic engineering. I want to control a speaker I found in an Xbox 360 headset with my Arduino, but I dont know how. Other small speakers I own all have 2 ...
0
votes
1answer
64 views

Displays, camera, speakers, microphones: why after more than 50 years of development do they still need calibration? [closed]

An old question running through my mind: Displays, camera, speakers, microphones: why after more than 50 years of development do they still need calibration? Whatever cheap or high-end material I ...
0
votes
1answer
31 views

Connecting a surround system without jacks [closed]

I have recently bought a house which has already the sound cables passing through the walls. These are raw cables without any jack connectors. My question is, when you go to buy a 5.1 surround ...
1
vote
1answer
85 views

Why does this circuit oscillate and produce sound?

I've connected an 8-ohm speaker in series with coil. When I apply 5 volts / 500 mA to the combination (coil and speaker), I heard a very high frequency sound (something like whistling). The coil is ...
1
vote
1answer
173 views

DIY wifi radio radio NOISE!

I am building a mono, internet enabled, WiFi radio and I have a problem. I am running into what I believe may be a grounding issue. When I turn the system on, I hear all kinds of noise coming from ...
0
votes
1answer
100 views

Replace potentiometer with digital version (Speakers)

I am trying to get my PC speakers to be controlled by my arduino. I've taken apart the control and it seems very straight forward, just need a few questions about subbing the manual pots for digital ...
0
votes
1answer
93 views

Help me hack this other speaker: Where would I introduce two different DC voltages?

I already asked a question about a similar speaker. I am also trying to convert a larger speaker in the same fashion. I open the speaker, and can identify the power supply and rectifier (I believe) ...
0
votes
1answer
214 views

Help me hack this speaker, where would I introduce DC voltage

I have a speaker that runs off of AC (there is a switching converter within the speaker) I'm attempting to convert it to battery power, From my understanding the speaker runs off of 5V (someone else ...
0
votes
1answer
94 views

What device would be the best for producing the loudest beep possible with the smallest size?

I need to have my device be able to produce sounds of at least two different frequencies, as loud as possible at around 3/5V. So far it seems like the best thing to go for would be a piezo speaker but ...
0
votes
2answers
159 views

How can I Improve the quality of an amplifier?

I amplify using LM358 Op-amp and 2 resistors. I played a song on my mobile. The output of the Mobile is the input of my circuit. The output of my circuit is connected to 8 ohm speaker. I hear ...
0
votes
2answers
142 views

How to make an easy oscillator?

I want to make a very simple oscillator that produces the sound of telephone ringing (I want to make a ringer). I will not connect it to a telephone so the quality of the sound is not important. I ...
29
votes
8answers
6k views

How can “purely” electrical circuits emit sound?

Moving membranes or piezoelectric materials obviously produce sound waves, but how can "purely" electrical circuits such as transformers or DCDC choppers (and others) often have an audible noise? Is ...
0
votes
1answer
207 views

Amplifying analogue audio from an iPhone docking station

So I have an old iPhone speaker dock that broke after I plugged in the wrong cable and fried the microchips on the circuit board. From it however I salvaged the dock connector itself and a couple ...
1
vote
4answers
144 views

Very low-quiescent (<2mA), 5V, simple “speaker” driver

How can I drive a 30ohm speaker from a 5V microprocessor in a simple, very low quiescent-current (<2mA) manner? The "speaker" is actually a coil, not a speaker - and I'm trying to induce a ...
0
votes
1answer
44 views

Changing bluetooth identification data

I bought this bluetooth audio module from DX.com. Is it possible to change the bluetooth identification name, which appears on the phone to pair, from what is mentioned?
-1
votes
1answer
119 views

Strange sound in speakers when the refridgerator goes standby [closed]

I live in a room which has two power sockets and the following devices, as illustrated in this diagram: https://docs.google.com/file/d/0Byu0T6y2SLeENDdvNGVCWHFBWmc/edit All devices look exactly as ...
0
votes
1answer
138 views

Breadboard layout with speaker

This project is from Arduino's Examples page. The first fritz is from there. I managed to run that example without any issues. However, I had tried keeping the wires together so I tried to run the ...
-1
votes
2answers
134 views

I just bought a one-earbud headset with a microphone, but the jack is too small! I cut it open, what do the wires do? [closed]

So, yeah, this is my first question, yay, but I still have a problem, boo. I was on a rummage sale spree, so-to-speak, looking for a new pair of earbuds as yet another cheapie pair has broken. I ...
1
vote
2answers
107 views

How to make an effective electromagnet?

I am making a speaker with some neodymium magnets and about 3m of copper (insulated) cable. How would I configure this to make it loudest/best electromagnet?
-5
votes
2answers
457 views

2.1 speaker volume controller circuit problem [closed]

I dont know how to connect 4 wires coming out of speaker to the 3.5mm jack whick only has 3 wires in it.... I don't need volume controller. I just want to fix it so that it could work as a stereo ...
0
votes
1answer
431 views

Small but powerful speakers [closed]

Why are powerful speakers like above 20w or 80w not small? I have never seen enough in the market which are under 3 inch but of 80W. The opposite is also true, some big speakers are of low wattage. ...
1
vote
1answer
102 views

Rigging an MRI machine with club speakers and lights

I'm using a magnetic resonance imaging (MRI) machine to fMRI trial subjects while they experience club-like conditions. This means I need loud, high-fidelity speakers, flashing multicolored lights ...
0
votes
2answers
150 views

Main speaker specs to consider

For a 20W amp, what are the determining characters, apart from speaker Impedance and Power rating, that affects a selection. Example Specs - (source - ...
0
votes
1answer
166 views

Prevent Clipping and Hum in class d amplifier [closed]

I got this amp. Now at large volumes, there seems to be clipping. How can I prevent it from happening, rather than never playing at high vol. Can it be done by AGC or Dynamic Range Compression or ...
1
vote
3answers
248 views

Connect lower power speaker to audio amplifier

I want to test an audio amplifier based on TDA7294 and the highest rated speaker I have has 20W @ 4 ohms. How can I connect it to the output of the amplifier without destroying it? I'm thinking I ...
2
votes
1answer
72 views

Amplifiers: IC selection and determining its correct values

I am onto learning and building electronics, and as a start I decided to build audio amplifiers. But of late the search for a good IC is becoming tough as there is an overwhelming amount of options. ...
0
votes
1answer
40 views

Improving IC parameters

There are varied IC's to sift through to get to the one that matches a designers requirement. So i was wondering if its possible to improve an IC parameters, take for eg THD+N, to at-least an ...
0
votes
2answers
374 views

Is a subwoofers RMS/peak wattage rating subject to the enclosure type?

The RMS and peak wattage rating of a subwoofer (or any speaker) show afaik how much power it can safely handle without damaging it. But is this true for both sealed and ported enclosures? (assuming ...