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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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20 views

Small TPA3116D2 amp [closed]

So basically i got this 2x50W+100Wsub Tpa 3116d2 amp Now my question is since the amp has an issue that it overheats the small orange inductors even when the sound system is idling(no signal) so it ...
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2answers
65 views

Audio amplifier for 600 ohm headphones

I am working on a design which must drive an audio output into 600 ohm headphones (aviation headsets). Normally, I would just use an off-the-shelf class D amplifier but I can only find ICs designed to ...
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6answers
174 views

How do I set my speakers out of phase?

A little bit of context: I'm doing a project for my physics class where I could choose the topic, and I chose to do phases in sound and noise cancellation (wavelengths and frequencies). Essentially, ...
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2answers
116 views

Controlling Speaker Output with Transistors

I am awfully new to circuit design and a little confused on some of the things I can and cannot do here, so please bear with me. In a simple Arduino project, I am trying to control the output of an ...
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1answer
27 views

Increase working hours for an external speaker

I have an external speaker which uses one 18650 cell (3.7V). I would like to increase the working hours by adding one more cell of the same type. I have two questions: Should I add the second cell in ...
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0answers
42 views

What happens to the output of a speaker when a square wave is input

I have an experimental set up where I feed a speaker a square wave and then observe the output of that speaker with a microphone. After plotting my data I get the following shapes where Ch. 1 ...
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0answers
23 views

Can I choose the 18W amp for my 1" tweeter (50 W AES Power Handling)

I have a question - I want to take a 18W TDA2030A amplifier kit to power my tweeter in my PA system. I have an active crossover in it, that's why I have separate amp for each driver. My tweeter is 1" ...
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1answer
57 views

Speaker crossover wiring

Came across some old Arcam speakers (cut open) and using the parts to build a bluetooth speaker box. Only problem is I can't figure out the wiring on the crossover/filter. The original speakers are ...
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1answer
67 views

Can a speaker be driven by a DC signal?

I’ve always been under the impression that speakers require an AC signal. The reason being that positive and negative current are required for the electromagnet to properly vibrate the diaphragm. ...
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2answers
52 views

Adjusting the voltage for a small speaker

I have a 4Ω 3W speaker and I plan to use it with MAX98357A amplifier. I need to make sure the speaker receives optimal voltage. When I test the voltage output from the amp playing nothing, I get 2.5V. ...
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1answer
112 views

Can't find source of hum in left channel of bluetooth speaker that I built

I have an RN-52 bluetooth audio module - https://cdn.sparkfun.com/datasheets/Wireless/Bluetooth/rn-52-ds-1.1r.pdf I am using it with this amplifier - https://images-na.ssl-images-amazon.com/images/I/...
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0answers
52 views

Resistor for buzzer current consumption limiting calculation

I would like to know how did the circuit designer of the circuit in the image calculated resistor R100 value. My guess is that the 100ohm resistor is to limit the current to ~20mA. I have tried to ...
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1answer
38 views

How to charge a battery when the charging socket is broken? [closed]

First of all I'll explain my situation: I own a Bluetooth speaker, more precisely this one: http://www.leicke.eu/en/products/EP18108 Due to my clumsy hands it fell while the USB cable was connected ...
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1answer
27 views

3.5mm, 4 conductor, in-line, plug

I am struggling to find pictures of the plug I bought to figure out where to connect speaker wire to. It is a TRRS 3.5mm plug ...
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2answers
46 views

Can I replace an 8Ohm 1W speaker with a 8Ohn 0.5W speaker?

I don't know power is handled through speakers. Can I replace this 1W speaker with a 0.5W speaker in a computer? From what I understand, it's the load which determines how much power something will ...
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1answer
95 views

Loudspeaker volume issue

I am building a microcontroller based circuit that generates some sound out of a loudspeaker. Basic problem: Not enough volume out of loudspeaker Strange stuff: Volume is louder if I use a LM386 ...
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1answer
108 views

Why doesn't this battery explode?

So I know that it sounds very stupid, but I'm trying to test the limits of a 12 dollar bluetooth speaker. I disassembled the whole speaker and replaced the original 3 watt speaker with a 70 watt one😂...
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4answers
48 views

How will an audio power amplifier output voltage behave when loaded?

If an audio power amplifier would power a 8 Ohm speaker through its proper(?) output and if the volume knob is set such that the amplifier outputs 8Vrms 440Hz sine wave across the speaker leads the ...
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2answers
171 views

Which is broken, the amp or the driver of this subwoofer?

My subwoofer (with an internal amp) is showing difficulty reproducing low frequency sounds (sine 30Hz ~ 70Hz). As I lower the frequency, around 70Hz, I start hearing very slight distortion (hint of ...
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0answers
63 views

Crackling sounds when both speakers are connected?

I have finished my amplifier using the LA4597 chip following the schematic below. So far everything's working fine. However, I noticed something. Some songs crackle the speakers (probably because of ...
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1answer
53 views

Amp for tweeter in bi-amping

I gonna make some 2-speakers Bluetooth PA system, and I chose bi-amping way with active crossover for do it. I have an 60W amp (battery limits) for my woofer. Skipping all the problems on my road to ...
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2answers
136 views

Stereo or bridged mono? (LA4597)

I have a stereo amp (LA4597) and is currently wired in a standard stereo circuit. Recently, I read an updated answer from one of my questions stating that wiring the amp in bridged mode doubles the ...
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2answers
137 views

Is this speaker crossover design correct?

This is the schematic for 2-way crossover, the speakers I want to use are: Woofer: https://thomann.de/pl/harley_benton_15tb065_b4.htm?o=2&search=1537173360 Tweeter: https://thomann.de/pl/...
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1answer
73 views

An Audio Module heating up

I am using an Audio Module. The schematics of the module can be found below. The module uses a audio amplifier (TS4990IST) and STM32F0 MCU. I found out when ...
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0answers
47 views

How to connect mic&speaker signals on different platforms?

I posted a question about carrying a line signal over 10-meter cable to transmit and receive human voice from a handset in a building to a GSM/GPRS modem (Quectel M95F). The main goal is to do a GSM ...
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3answers
65 views

Replace 3.5 mm AUX with USB

This might be a touchy subject, but bear with me. I have a 2.1 speaker set which has typical 3.5 mm AUX input and output. The problem is that sometimes the left and/or right audio channels cut out and ...
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2answers
56 views

Hifi soundstage decentered [closed]

I have spent hours trying to workout why the soundstage, the center of the sound between my speakers, is decentered to one side, in other words the drums vocals bass are normally in the center of the ...
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3answers
108 views

Potentiometer/attenuator between amp and speaker

I have a setup where an amplifier with 2 channels drives four 8 ohms 80 watts speakers on each channel. The amplifier has a single volume knob which controls volume of both channels at once. What I ...
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1answer
72 views

Connect common ground stereo to a device with different ground for each channel

I have an old stereo that I want to resurrect and add Bluetooth to it. For that, I bought a Bluetooth module, this one: https://www.aliexpress.com/item/PAM8403-Wireless-Stereo-Audio-Receiver-Module-...
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2answers
65 views

Hummm Sound from stereo speaker when used on inverter

I have a normal 2.1 Stereo speakers with an aux 3.5 cable coming out as input source, i plug this aux cable to a source when needed else it remains hanging, whole speaker this is plugged in to an ...
3
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2answers
66 views

Relation between the impedance of speaker and amplitude of sin wave?

I have an oscillator producing a sine wave with amplitude 3 V (so it oscillates between +3 V and -3 V). The oscillator is at about 500 Hz. I connected this to an 8 ohm speaker and I hear the sound ...
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1answer
89 views

Transistors as Switch and Amp to control LED strip

I am controlling an LED strip based on audio input from my phone. I am having some good results, but not exactly what I want, and my ignorance of transistors is holding me back (I'm a Mech E major ...
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1answer
181 views

Sine wave noise on the 8-ohm speaker

I'm trying to transmit and receive voice to my GSM modem over a 10-meter cable from a handset connected board using TEA1062 line drivers. But when I connect a speaker to the handset, a sine wave noise ...
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0answers
50 views

Speaker and receiver impedance matching

I have feeling, I will get the following "this is not the right forum to ask this question." Nevertheless, I will try: I have a mixture of 6 ohm and 8 ohm speakers. Should I set my receiver to 6 ohm ...
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1answer
53 views

Speaker Wire Connection

I have some Phillip speakers I got from a friend, but they forgot to give me the amp. I'm hoping to still use these for some projects, but noticed the speaker wire coming out has two terminal, one ...
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3answers
168 views

Understanding how an audio amplifying circuit works

I'm trying to learn electronics and electrical engineering through building small practical projects (toys mostly). I've been learning a ton from adafruit and spark fun, but I'm trying to branch out a ...
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1answer
340 views

What all do I need for a simple speaker circuit?

I'm trying to use a 555 timer in astable mode to play a square wave sound out of a small speaker, but I'm having trouble understanding all the components I should use. I think I need something like ...
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1answer
70 views

Can capacitors in speakers (Yamaha) be replaced by slightly different ones?

Now, I know that people used replacement capacitors which has a Capacity of 22nF, 250V ac and 630V dc +/-5% The Capacitor was labeled C515 on the board it is soldered on. I was wondering how ...
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1answer
73 views

Canceling ambient sound [closed]

I've just moved into a new flat and I noticed that there is a lot of car noise coming through windows. I know, I could just close the windows, but that's a less interesting approach to a problem. So ...
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1answer
67 views

Potentiometer Range in Speaker Frequency Response Curves

In several speaker spec sheets from CUI a frequency response curve is given, such as in the CLS0231MA-1: Notice the two y-axes: one for the potentiometer (0 dB to 50 dB) and one for the DUT (0 dB to ...
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2answers
49 views

“mapping voltage” on an analog potentiometer using a voltage divider

I'm working on a simple project to learn electrical circuits. I built a little sound box that will play tones when you press buttons. The battery provides 3volts and the "power boost" is a buck ...
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2answers
141 views

How does an electrical speaker determine amplitude and frequency? [closed]

So, I know that a DAC converts coded binary signals into analog signals, but what sort of thing determines the pitch and amplitude of the outgoing sound? Does the DAC use a clock for frequency and ...
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1answer
207 views

Alternate to LM386 for 3.3V system

I'm trying control the volume of a small speaker (8Ω, 1/4W) in a 3.3V system using a potentiometer wheel (10kΩ). I've done this in the past using an LM386 in 5V systems, but the project I'...
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1answer
96 views

Amplify 1W output to 3W

I'm trying to build an audio circuit using an WM8960 chip from Cirrus Logic based off a 2 mic Raspberry Pi board from Seeed studio. The chip outputs 1W per channel into an 8Ohm load but I'm finding ...
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2answers
134 views

Transistor Power Dissipation / Overheating

I am working on an audio project in which a voltage controlled square wave oscillator drives a 5W 4Ohm Speaker. I am using a unipolar 12V supply. In order to limit the current going through the ...
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1answer
73 views

Will connecting an electronic instrument's output to a computer's microphone input overload the computer?

I would like to record the demo music on our Yamaha CVP 201 electronic piano, preferably by connecting it directly to a recording device's input. Right now, I have a 3.5mm splitter to separate the L ...
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1answer
93 views

Is reversing speaker polarity worse than listening off center?

I am certain that for all frequencies above about 440 Hz, there is only about a few cm of listening zone within which the polarity of the audio makes any difference. Am I wrong? If you connect a ...
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2answers
557 views

What is the Danger in Plugging an 4 Ohm Speaker into an 8 Ohm Amplifier?

I know it is a commonplace warning not to plug in a 4 ohm speaker to an amplifier rated for 8 ohms. I am wondering what is the actual danger that is presented by doing this in an electrical sense. ...
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0answers
29 views

6 SPEAKERS one amp

I just joined stack exchange to ask this specific question. I have 6 speakers. All 6 are 8 ohm speakers. There are 2 pairs (Speakers 1&2 are pair A and speakers 3&4 are pair B and then 2 ...
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1answer
44 views

Controling where sound goes (darlington array)

source of sound (dealing with multiple sources) and six speakers. I want to control to which the sound goes. The system has a DC offset with both sides of the wave within positive range Question is ...