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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44 views

Why does the subwoofer hum when no source is connected? [duplicate]

The hum at 60Hz stops as soon as an audio source is connected and came with a 2 pin connector. I tried to connect any part of the subwoofer with the ground of a socket. The buzzing stops when no ...
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1answer
71 views

Do almost all modern smartphones use piezoelectric speakers?

Do almost all modern smartphones use piezoelectric speakers for both the ear speaker and the speakerphone speaker? The reason I ask is because I rinsed off my waterproof smartphone (which I've done ...
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1answer
35 views

Confirmation of correct voltage and frequency to send to a speaker for it to output sound

If I have an 8 ohm speaker that's rated for 40W (assumed RMS) with a frequency range of 73 Hz to 2500 Hz, and assuming the 8 ohm impedance is the same across the entire frequency range, does that mean ...
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2answers
103 views

Subwoofer hums when no audio source is connected [closed]

The hum stops as soon as an audio source is connected or any metal part of the subwoofer is connected to the ground of a socket. Does anyone have any idea what the problem is?
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1answer
63 views

If I'm wiring a bunch of speakers in parallel, is adding a resistor to the circuit path sufficient to protect the amp?

My house has quite a few outdoor speakers, 6-8 of them. My amp has a "Zone-2" stereo output that I'm planning to drive them with. Each set of speakers has a rotary volume control on a wall ...
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1answer
144 views

Why does volume above 80% break my speaker (PAM8403, 3w 4ohm, 18650)?

I am new to working with electronics and I am building a simple speaker. The Problem The speaker I built so far (poor sound quality aside) stops working if the volume is above ~80%. By stop working I ...
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1answer
59 views

GND vs COM? Which one should I connect the ground to?

I have a cassette in my car, I was using a cassette-aux adapter to play music through my phone. It looks like this: After searching a bit about how it works, I found out that it's nothing but a tape ...
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2answers
488 views

Is it good practice to use diodes in a stereo to mono conversion?

Some background: I am making a VU meter with LED strips using the Alexa Gen 4 Echo as the sound source. I'm planning to modify the Alexa so that I solder external wires to the left tweeter, right ...
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2answers
47 views

How to use audio signal from car speaker as transistor switching signal?

I want to make reactive LED strip for my car and I want to make it somehow smart... I figured a schematic like the one below: The LED has a 12 V source at the beginning of course. KEY3 is a relay but ...
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2answers
94 views

DIY portable bluetooth speaker; charging/battery question

I'm new to this and i'm doing my first real build for a friend. What I got so far: Amp: ZK-TB21 Here BMS 3s 40A balance Here 18 18650 battery on 3S pack 2 x 25W generic speaker and 1x30w tangband ...
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0answers
53 views

Replacement capacitors for Celestion DL6 crossover

I have a couple of Celestion DL6 speakers that are more than 30 years old. Not quite as good as they used to be, it seems. I assume the electroytics deteriorate? In which case I need to replace them. ...
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2answers
50 views

Not visualizing signal in oscilloscope when a speaker is connected

Hope you can help me with this, because I really don't understand what is happening. I have the following electronic circuit. The Arduino is generating a tone and I am changing the volume with a ...
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2answers
39 views

Mini USB Male to 3.5mm female tips?

I got some helmet speakers for free from my work. I was hoping to just install them and them plug in a 3.5mm connection to my phone and play away. But the speakers have a mini usb since you "need&...
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2answers
63 views

Speaker Line Supervision

I want to design a circuit for 100V loudspeaker line control. I want to periodically check if the line is short circuit or open circuit and receive notifications in case of any short/open circuit. I'...
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2answers
74 views

solder/join single copper filament to contacts (speaker tweeter)

As a result of the careful shipping of UPS, my speakers arrived with broken tweeters. One tweeter in particular has had its connections severed when the plastic support broke. I need to re-connect the ...
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1answer
87 views

AC Power cord - using IEC 60320 C13 instead of C17

My subwoofer has power inlet that seems to be IEC 60320 C18, which looks like this: I should normally use a power cord with IEC 60320 C17, which looks like this: However, the IEC 60320 C17 type ...
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1answer
56 views

Question about storing magnetic parts (DC motors and speakers)

I always have a problem with storing magnetic parts, namely DC motors and speakers, because I am afraid if I let them attach together their magnets could interact and weaken/damage each other. So I ...
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2answers
51 views

Computer Speakers vs. Human Voice [closed]

How do computer speakers compare to the human voice in regards to the range of frequencies they can produce? What is the lowest a human voice can go (either world record or just the average person) ...
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3answers
132 views

How to reuse old speakers?

I am kinda interested in starting to learn something about electronics, I thought a good idea would be to try to reuse those speakers so here we are. I see they have 2 wires but I don't know how could ...
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5answers
4k views

Why has my tweeter speaker burned up?

I bought a powerful tweeter (or so I thought) to experiment with the ultrasound. The device is quite heavy, and it is rated at "350 watts RMS/700 watts peak": 2'' Titanium Super Tweeter ...
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1answer
83 views

Connecting 0.25 watt 8 ohm speaker to 3.5mm mini jack output from laptop/portable player

Can I safely connect a 0.25W 8 Ohm speaker to 3.5mm mini jack output from laptop/portable player? What is the general calculation (thought) when doing similar stuff, like connecting a 2 watt 4 ohm ...
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1answer
24 views

Using xl6009 on a 5v powerbank circuut

I want to use xl6009 boost converter on a 5v 2 amp powerbank circuit to power up my 12v amplifire amplifier load is 750ma. What you guy's think about this. Please answer my question ASAP. (sorry for ...
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0answers
38 views

Can speaker impedance change over time?

Backstory I've got these old Technics RP-F600 headphones in my closet that I wanted to use. I bought them ages ago (don't remember, probably over 10 years ago), and for the past year or so they've sat ...
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2answers
63 views

Theory Question: Speakers don't work unless I poke soldered points with screwdriver

In case you couldn't tell by the title, I don't really have any idea what I'm doing with electronics. Something happened though, and I am really curious about it. Don't know how to ask it specifically,...
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0answers
37 views

Transformer coil (reactor) inductance value in AC (El type)

I want to use one of these inductors (EI type transformer coils with air gap) in series to a speaker (woofer) to filter out high frequencies. https://www.hammfg.com/electronics/transformers/choke/195-...
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4answers
71 views

How to calculate the expected output current being drawn by a speaker?

I'm trying to calculate the current that will be drawn by a 4ohm 3W speaker from a MAX98357a IC amplifier. From my understanding, the amplifier takes in a I2S audio signal (which originates from an ...
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2answers
1k views

Why is my loudspeaker not working? From Make: Electronics

I am a complete beginner in the world of electronics and I am following the amazing book by Charles Platt, Make: Electronics (second edition). I am stuck at Experiment 11, when I need to connect an ...
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4answers
117 views

Small amplifier to big speaker - Will it end in tears? [closed]

I was given a pair of vintage (brand new unopened) speakers which I am hoping to use with a wall mounted remote controlled amplifier as part of my home cinema. Here are the specs. Speakers: ...
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0answers
32 views

How to produce sound when a certain condition is met in proteus?

I've made a 6-bit counter with 6 JK flip-flops that can count from 1 to 33. After it reaches 33, the circuit will go back to zero. I want the circuit to produce a sound when the counter reaches 33. I ...
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0answers
44 views

Transformer hum coming in audio amplifier

I made an audio amplifier with a 6283 IC. When I power the amplifier with a 12V battery it works fine without any hum. When I power the amplifier amp with a 12V powered transformer, hum comes from ...
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1answer
64 views

Attempting to build photosensitive alarm-clock - circuit questions

I'm working on building a photosensitive alarm clock for a school project. My supplies require me to use a DC power source, and my speaker requires an AC current. In the circuit I posted below, I ...
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0answers
48 views

Can I replace a music toy speaker with a 6.3mm jack?

This toy keytar gas an 8 ohm speaker and adjustable output volume. If I simply replaced the speaker with a 6.3mm jack to use it with guitar pedals and speakers that can handle the line level, would I ...
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4answers
4k views

If we use potentiometers as volume controls, don't they waste electric power?

I recently heard that we use potentiometers to reduce the volume levels in audio devices. Will it waste electrical energy?
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4answers
1k views

How to calculate maximum input power on a speaker?

I got into this rabbit hole while trying to replace the speaker wire in my setup. I have speakers with 8 Ω of resistance (Rspeaker) and a maximum input power of 140 Watts, so I wanted wires that would ...
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0answers
31 views

Passive LC low pass in combination with series resonant/ band stop stage

I found this crossover circuit in a construction set and it puzzled me a while. I have absolutely no idea, why I should combine a 2nd order low pass with half a band stop. The low pass alone has a ...
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1answer
82 views

How do I calculate the wattage of a set of speakers?

I've just received a set of speakers that I want to design an amplifier for. Two of them are 5W 4Ω and one of them is 10W 8Ω. How do I find the total peak power output of these? I apologize for such ...
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1answer
43 views

PC speaker cable extension

I have a 2.1 PC speaker system and I would like to know what are the disadvantages and advantages of extending both satellites cables using RCA cable extensions. Each satellite has 16W. The amplifier ...
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2answers
515 views

Recommendations for building a dedicated external speaker from an older computer

I'm super excited to jump in and learn more about building an external stereo speaker from an older salvaged macbook laptop. I loved using the laptop to reference how my music sounded to get a better ...
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2answers
92 views

i want to know if the potentiometer is broken or just dirty and if it's broken can i find the same in the market? [closed]

Hi i have speakers labtec arena 530 . i opened the main speaker and the problem is from the potentiometer I can make a brigde and connect 2 pot of the potentiometer sound become clean but i loose the ...
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1answer
56 views

Simple speaker crossover 1st order filter design

Opened up an old speaker and am trying to figure out what is going on with this capacitor. The gray cord leading to the larger 16cm speaker cone is an 8Ohm/6.3W capable load and then there is a 1uF ...
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2answers
413 views

Should stereo speaker cables be elevated to avoid static electricity

I am contemplating a new design for speaker cable stand-offs. I am unable to find support, only opinions, about static electricity produced by carpet affecting AC current between amplifiers and ...
2
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2answers
289 views

Measuring RMS power output from audio amplifier channel

I am looking for a simple way for getting the RMS power output of an amplifier channel set to some arbitrary gain. I want this in order to find the maximum level I can safely set the amplifier at for ...
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2answers
142 views

Designing an amplifier to drive a speaker

I am a beginner in designing this circuit, can someone give me a tip on how can I achieve the following specs? Variable gain and a maximum gain of 12 dB Input impedance greater than 30 kΩ Load ...
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1answer
213 views

What Is This PCB Component? (Sonos Play 5 Gen 1 Speaker)

I have a Sonos Play 5 Gen 1 Speaker and everything is working on it perfectly except that it makes this constant whistling / buzzing sound whenever the power supply is plugged in. Dug into it and ...
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1answer
32 views

Amplifier and speaker compatibility? [closed]

Will this amplifier work with these speakers?
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2answers
64 views

What is the relationship between speaker volume change and resistance change?

Assume that we have a speaker whose volume is controlled by the potentiometer. If the resistance of the potentiometer changes by X%, and speaker volume changes by Y%, what is the ideal relationship ...
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1answer
96 views

Amplifier for Philips HTS7201/HTS7202

I have "inherited" a Philips 2.1 Home Sound System HTS7201/7202 The official user manual from philips can be found here: https://www.download.p4c.philips.com/files/h/hts7202_12/...
2
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1answer
64 views

Speakers: danger of blowing things up

I have an MP3 sound chip module from Talking Products. 4.5 volt battery driven 40mA with an 8 Ohm. 0.5 Watt speaker. I briefly plugged in two 4 Ohm 3 Watt speakers and they worked (and sounded much ...
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2answers
406 views

How can I wire this square Pot?

How can I wire this 6 pin pot to control a speaker and LED. I know how to wire up normal circular potentiometers, and I feel like this pot may be broken, but how can I tell?
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1answer
94 views

SIM800L EVB audio output on Raspberry Pi

I have a SIM800L EVB GSM module connected to a Raspberry Pi and it is working correctly. However I did not find any pins related to speaker or audio output as shown in the wiring: This is different ...

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