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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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51 views

What would it take to add Bluetooth capability to a digital (musical) keyboard?

I am completely new to electrical engineering. I have a software background and have an interest in tinkering with hardware. I'm wondering what knowledge/engineering skill/equipment is required to ...
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0answers
35 views

Doorbell intercom speaker replacing

I think I came to the right place to ask this question. I have an 20 years old Siemens intercom and it didn't speak anymore to the person outside ringing the doorbell. There are 2 'phones' in the ...
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0answers
20 views

Music instrument combo amp needs conversion to a part time speaker cab

I bought an Acoustic brand 20w bass amplifier that has a 12 in speaker in the closed back cabinet though the amp itself is accessible. Two disconnects separate the amp from the spkr. I want to use the ...
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0answers
74 views

Calculate actual power of speaker

I have a sound system: 8 speakers, 1 amplifier (4 channels). Speakers were connected in parallel. I want to calculate actual power on each speaker. Specifications: 8 speakers: Woofer (4): Power: ...
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0answers
50 views

Why connecting oscilloscope reduces noise [duplicate]

I am doing a speaker driver circuit. When I connect the oscilloscope probe to the output (emitters of npn/pnp complementaries) to where also the speaker is connected; the sound of speaker and the ...
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0answers
137 views

Where might the noise be coming from in this speaker driver circuit?

Well, it will be a broad schematic. To summarize, there my approach is: Yellow part is for oscilations at three different freqs(around 0.8 - 2 kHz, different for each of the three signals), ...
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3answers
62 views

Loudspeaker Efficiency

The nameplate or nominal impedance of most modern speakers is 4 or 8 ohms .It has been known for generations that the Actual impedance varies somewhat with frequency and is not pure resistance ....
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0answers
43 views

How to approximate/model a speaker

I am working on driving an 8 ohms speaker. I am currently modelling(in Ltspice) it just as an 8 ohms resistor. However this is probably far from being realistic. I don't want/need too much precision ...
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1answer
55 views

How can I turn a midi keyboard to a stand-alone piano using Arduino or any other way? [closed]

I have a midi keyboard, but I find it frustrating to start PC, DAW system every time I want to play. Is there a way to use Arduino to create an on the go stand alone piano. (It should work like a ...
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2answers
1k views

Does driving a speaker with a DC offset AC signal matter?

Do these two input signals have different effects on a speaker? An AC signal with some value of DC offset. Same AC signal but centered at 0 V.
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2answers
154 views

What makes LM386 so common at sound amplification

TL, DR at the end. Preamble: This quesiton results from an analog electronics lab project. However, I am not someone who asks here and wants you to do the job for me. Rather, I have been extensively ...
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1answer
85 views

Does cutting the covering of subwoofer wire affect the sound quality?

I have Sony 5.1 channel sound system. There is some cut on covering of subwoofer wire. The copper wire is not affected at all. So, I am curious to know whether it will leak the passage of sound and ...
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1answer
74 views

Why do they not make center tapped loadspeakers?

An early Australian solid state portable receiver manufactured by AWA used a 30 ohm centre tapper speaker that was directly driven by a push pull PNP germanium output stage. The orthodox arrangement ...
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2answers
83 views

Driving an audio speaker design questions

I have been dealing with some project in which I have some requirements to accomplish. For now, I am dealing with the first part and a quick story is, I have to generate a sine wave at a certain ...
2
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1answer
81 views

Hi fi speaker impedance

I'm currently working in a charity shop. We have a range of hi-fi units, radios, CD players etc. We also have a range of speakers to go with them. Some are marked with their nominal impedance, ...
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0answers
68 views

Buzz/hum from powered desktop speakers

I’ve been trying to revive a set of vintage Apple-branded powered desktop speakers. Nothing more than a gunked up potentiometer and a broken solder joint on the input and they’re now working again. ...
0
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1answer
56 views

Audio Amplifier Clipping

I designed a PCB with the following audio amplifier on it: https://eu.mouser.com/datasheet/2/302/TFA9896_SDS-1381317.pdf According to the data sheet, the amplifier is able to deliver 2.1W RMS into an ...
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1answer
29 views

Audio playback information when pressing buttons (school project)

My son is making a display (about A1 sized card) about space for school and I am trying to find out a simple way to add some buttons, that when pressed plays an audio recording with info about ...
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1answer
99 views

How to record a speaker?

Complete noob here. I don't need a ready to implement solution, pointers on what to read upon and ideas for even simpler projects to gain experience first are perfectly fine. I'm trying to feed both ...
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0answers
49 views

Can I make this Bluetooth speaker stop cutting off its speakers when audio signal goes silent?

I have a simple Bluetooth speaker that always seem to cut off its speaker circuit when the audio stream goes silent. This makes an audible popping noise, which is repeated when the stream starts ...
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3answers
113 views

8 ohms and 4 ohms speakers wired in series - volume issues

I have two identical sets of ceiling speakers connected to a cheap 2 channel Chinese micro amp - one 8 ohms and one 4 ohms, wired in series per channel. The 8 ohm speaker is too loud when the volume ...
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1answer
40 views

Speakers Power and Quality Difference Factor

I started tinkering with speakers (mostly amplifier circuits) and I learned a lot about how sound and amplifying works but I don't understand how to increase quality I have several kind of speakers , ...
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1answer
66 views

How to get stereo and mono signals simultaneously?

I have PAM8403 circuit module to drive my two 3W speakers. I want to drive a subwoofer with a different amplifier. I have a 3 inch subwoofer, and I'll get an amplifier for that. My question is how do ...
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1answer
53 views

Any solution to avoid humming sound / speaker noise for MP3 bluetooth module?

So I have here sub woofer Simbadda CST 5100N and I want to convert it to bluetooth, so bought an MP3 bluetooth module to convert it. The module needed 5 to 12 volt DC to operate. Inside the speaker, ...
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1answer
110 views

LM386L does not amplify the microphone signal

I've encountered a problem. I recently bought a condenser microphone and I wanted to have some fun, so that if I said something into the microphone, I'd hear myself in the small 8 Ohm 0.5W speaker. I ...
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2answers
65 views

In general, construction wise, what makes a speaker more or less sensitive to mid tones?

I bought a second hand vintage boombox and the left (full-range/'woofer') speaker has gone so I replaced both speakers with some Sony ones. The Sony ones are taken from of cabinets lying around (the ...
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1answer
84 views

Current limiting circuit

Kindly suggest necessary change to be made for current liming circuit for buzzer. simulate this circuit – Schematic created using CircuitLab
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1answer
161 views

pam8403 using low wattage speaker

I am using the output of usb sound card as an input to PAM8403 ic with specs from datasheet. However i am using 4 ohm 0.5 W speaker. So i have tried testing with that and it works but sometimes with ...
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1answer
237 views

Piezo buzzer vs Speaker

Can anyone explain that what kind of sound a piezo can and cannot produce when compared to A speaker. Can it just play notes? Is there some quality reduction in piezo buzzer?
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1answer
72 views

How many Watts is my stereo? [closed]

I have a Pioneer SX-316-S stereo. It has six speakers. The specification says it consumes 320 Watts. It also says the continuous power output is 100W per channel. It also says the RMS power output is ...
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0answers
109 views

Driving a piezo speaker at 40 KHz

I'm trying to drive this piezo element at 40 kHz but am running into troubles when using a function generator since the element requires greater drive. I got the guts of an ultrasonic cleaner to ...
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0answers
55 views

Difference between car audio system and portable speaker

I designed a circuit which would turn on LEDs with intensity of the music (music reactive LEDs). I tested this using a portable Chinese speaker and it worked amazing. This makes me think that the ...
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1answer
35 views

Adapter to plug home audio system speakers into computer

I'm wondering if there is an adapter I can use to plug two speakers that came with my home audio system into a laptop. My laptop has an auxiliary port (not sure what the technical name is) that I plug ...
1
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1answer
36 views

How to drive a speaker (earpiece) in an antique (vintage) phone (67 ohm)

I am using a small audio player board (DFPlayer Mini) that has a 3w audio amplifier built in. I have hooked it up "as is" and it appears to work but has some intermittent static. While it could be ...
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2answers
57 views

How to attenuate a cheap MP3-player speaker?

I have a cheap single-chip MP3-playing speaker. The kind you you get off eBay for $10. I want to make the output quieter (so I don't always have to adjust the digital volume controls). The amp is a ...
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4answers
155 views

What is this audio-related component?

This component looks like a speaker and attracts iron towards its center. The numbers here lead me nowhere; the company is some audio-related company. Shows a resistance 145 ohms.
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3answers
80 views

How to match a power amplifier and a loudspeaker array?

I am trying to use a power amplifier that is available to me to actuate an array of loudspeakers. The array has a total number of 30 loudspeakers (ways of connection can vary). And I would like to ...
1
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1answer
90 views

How to drive a speaker with amplifier using 3.5 mm jack [closed]

I have two bare loudspeakers salvaged from old speakers and I would like to control them from computer using 3.5 mm jack. The speakers had a control board, but that is broken. I would like to ...
2
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0answers
275 views

How to prevent my audio amplifier cutting out?

Design Problem: Since I moved into my dormitory for university, I wanted to have a simple audio setup which had a good frequency response. Therefore I bought the Edifier R1280DB, a bookshelf speaker. ...
2
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2answers
636 views

Why is the output signal of my amplifier heavily distorted?

I checked the circuit 1 million times. I got it from a website. Everything is correctly connected. The sound is loud, but it is very distorted. I use a 9 V battery. Where is the problem? :( ...
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1answer
37 views

Options for passive speakers

I would like to buy a small external speaker (mono) to use for my laptop and mobile phone, both of which have very poor-quality and low-volume built-in speakers. However, all that I can find in ...
1
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0answers
52 views

How does speaker in “ROBOCOPP B A S U Ealarm SOS Personal Alarm” works?

I was working on a project which required producing a sound with more than 125 DBs...then I found this device in market which claims of producing 130DBs although to my knowledge it produces around ...
0
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3answers
160 views

Why do carrier waves sound silent on radios?

I was recently reading about and building low-power AM radio transmitters, and read/noticed that when the carrier wave is not yet modulated, the radio receiver goes silent. For example, let's say my ...
0
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1answer
116 views

Identify these components for bluetooth speaker [closed]

I am wanting to make my own DIY bluetooth speaker (first time electronics project) and I have found several good Youtube videos on the topic. However when it comes to finding the actual parts, I am ...
3
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0answers
92 views

Bluetooth speaker works only when aux is plugged in [closed]

Plot Recently got this Bluetooth/FM speaker with a built-in microphone from my friend to try repairing it. He said that it's battery was swollen up so he dumped the battery and never used the speaker ...
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0answers
105 views

What is the name of these colorful connectors?

What is the name of these colorful connector? Standard one or priority? One of the molex family? What is the exact name? PS: The connector is used to attach speakers. There is a marking on each one ...
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2answers
91 views

Electric field near dynamic loudspeaker at resonant frequency

Background I am driving a cheapo 8 Ohm speaker with an LM386. The LM386 circuit is nearly identical to the one in the datasheet shown below, except Vin is AC coupled through a 10uF capacitor and the ...
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2answers
48 views

Distortion is introduced when speaker is connected to the output of the amplifier

I have a circuit that implements a guitar amplifier (I ordered a couple LM386 but in the meantime I used an OP484). The following figure represents my schematic: (cap C2=10uF as well) The signal from ...
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1answer
884 views

How do I calculate expected output voltage of car audio amplifier with given conditions?

I have a 4-Channel Amplifier rated at 800 Watt RMS per channel @ 2 Ohm load. Channel 3 and 4 are preset to operate a subwoofer speaker while Ch 1 and 2 are set to operate mid-range speakers at ...
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3answers
180 views

Can a 30 watt (RMS) speaker work with a 5V 2A power supply?

I am thinking of using a speaker with Raspberry Pi 3b+ which has a 5V output pin. Speaker data: Power rating (RMS) 30 Watts Power rating (max) 60 Watts Impedance 8 ohms Will this speaker will ...