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Questions tagged [speakers]

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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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I'm studying active and reactive power, and got to this question: A loudspeaker, let's say the one from a guitar amplifier, receives an AC signal in order to sound, but usually it is said that DC is ...
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A long time ago I put together a 555 tone generator from Radioshack parts. The circuit was similar to this: This is the source: http://electronic-projects.50webs.com/variable-frequency-tone-generator....
qwr's user avatar
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I have a feedback circuit for a device I am designing. The goal is to sense temperature changes with thermistors and then if certain conditions are met I want to use an analog switch to disconnect a ...
Engineer1's user avatar
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Trying to turn a Bluetooth speaker unit into a wired one. Need help in knowing what needs to be done to make the speaker take AUX line-in audio to output it without any BT interface in between. It is ...
spcsLrg's user avatar
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I have the variables - speaker resistance 8 Ohms, amp power 70 Watts per channel @ 8 Ohms, plus speakers max 8 meters from the amp. Bit confused, but intrigued as to how to roughly calculate cable ...
minisaurus's user avatar
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I am trying to setup a circuit for a personal project that involves using a PWM signal send a square wave to a speaker. I've tested this circuit and it works, I only need the speaker to play different ...
Angel romero's user avatar
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I have 3 audio amplifier modules: PAM8402, TDA2030, and TDA8932B. I want to build a 2.1 home theater system powered only by 12V. At first, I thought I could just use low-pass and high-pass filters, ...
AresXT's user avatar
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I'd appreciate a sanity check on my audio setup before I finalize the design. Here's what I’m using: Components DAC: PCM5102A I²S DAC (from Raspberry Pi 5) Amplifier: PAM8403 HW-104 (Class-D, 2×3 W, ...
Omar Yarali's user avatar
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I want to connect the amplifier board (2X3W Stereo Audio Amplifier, 5V PAM8403) to two small speakers, but i'm not sure how to go about connecting them to an audio player to play sound. What wires/...
Letitia Yeo's user avatar
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audio circuit]1i am making a microphone to speaker with prebuilt amplifier modules. I don’t know if this is going to work or am i missing a capacitor to smooth out the output of the mic or to clear ...
Axccyyy's user avatar
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This question arises from a confusion about theory and seeing successful projects online. I want to connect a DFPlayer Mini MP3 module and a speaker to a Raspberry Pico Pi 2 microcontroller and it's ...
dubious's user avatar
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I have created an analog synthesizer based on waveforms and signal concepts, but I only focused on the wave shape till now and not on the voltage levels. Now that I want to actually hear the output of ...
Saranya Mukherjee's user avatar
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I am designing a small PCB with the goal to provide basic audio (beeps and bops, or terrible audio quality) to a 150 ohms headphones and a sensitivity of 90dB@1mW. On the other end I have an STM32 ...
EngelOfChipolata's user avatar
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I must be massively overthinking this or misunderstanding something fundamental. In discussions of how much increase in dBSPL (Sound Pressure Level) one can expect from a loudspeaker for an increase ...
nguzman's user avatar
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The volume knob on my speaker broke off but I can't seem to find the part number anywhere. It looks like a 2 gang pot since it has 6 pins. The speaker model # is JBL LSR305
user2570937's user avatar
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When conducting a live voice announcement on the fire alarm system without the strobes activated, there is a fluctuating voltage bleeding from the speakers onto the strobe circuits and it is causing ...
Emily Lundin-Tyrrell's user avatar
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I'm working on building wireless speakers. After going through the active lowpass filter stage I added a second amplification stage to get up to the voltage level of my speakers I was using. However, ...
Nashwan Siddeeq's user avatar
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I'm building a wireless speaker and after passing the first stage of active filters everything is normal and behaves as expected. However when trying to amplify the signal even more to match the ...
Nashwan Siddeeq's user avatar
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I would like to use the MEMS speaker ADAP UT-P2023 from USound (https://usound.com/product/ganymede/). The datasheet recommends the LM48580 ceramic speaker amplifier (class-H), which features an ...
MuellerDominik's user avatar
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I am working on an amplification circuit to an electret condenser microphone with gain of 5 using an Op-Amp in inverting configuration as shown in the picture. The reason behind choosing 5 is because ...
Sherif Emad's user avatar
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I recently acquired an old transistor radio and I'm interested in transforming it into a Bluetooth speaker. I'm considering using a stereo amplifier kit that includes built-in Bluetooth, such as this ...
Lyoner's user avatar
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I have a speaker written on it "ARTS 4 ohm 5 watt JS52-1251": I took it from an old sound station whose jack socket no longer works. I don't have a manual or a datasheet for it nor was I ...
S.E.K.'s user avatar
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I've found out measuring resistance for two headphones (~32 and ~50 ohms nominal) that resistance/impedance between left and right (tip and ring of TRS connector) is about twice that of nominal (...
Martian2020's user avatar
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I'm trying to change the sound that is playing from this circuit board but I dont know if it's even possible. It has two Led numbers on each side. A slide button which turns on or off the sound. One ...
Jack the man's user avatar
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I want to use 2 Y switch at the output of a stereo audio amplifier (1 per channel) to switch between two speakers. Both speakers embed passive crossover circuits (so resistance, capacitors and coils). ...
Emmanuel Istace's user avatar
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my Mom told me that her bluetooth speaker (Ultimate Ears Megaboom) doesn't work anymore. I'm a little experienced in electronics so I wanted to try and repair it. My assumption was, that the battery ...
Simon Mayr's user avatar
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I am using a TPA3116D2 based 2.1 Class D amplifier to design a powerful Stereo Audio System. A sample module image is given below. I believe, this is a popular amplifier module and many of the ...
sribasu's user avatar
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I am having a slight confusion regarding what type of wave/voltage range can the I2S DAC module can give. And what is the required voltage range needed for a speaker to give sound. The i2S DAC module ...
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This is a continuation from a previous post. Read here if you have further questions. I have decided to makee a simple guitar amplifier with the circuit seen in the attached figure. What maximum value ...
Rahul Singh's user avatar
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I would like to build a simple speaker circuit to amplify an audio signal. I plan on using the CDS-40288 speaker by CUI Devices (datasheet). Questions: How will the impedance of the CDS-40288 affect ...
Rahul Singh's user avatar
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Total newbie here. Please bear with me. I am interested in making a gag gift for a friend, which uses a typical audio mixer slider to control the volume of a typical backup beeper. This is Not ...
Bruce Simonson's user avatar
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I have been building a circuit that takes the output of a 555 IC and outputs it into an NPN transistor that acts as a switch to toggle a 741 Op-Amp connected to an 8 ohm, 0.5 watt speaker. I'm new to ...
RetroBoltDev's user avatar
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I have a circuit schematic (this is just a part of it): I am trying to find what those little circles above and below the speaker are. I dont think they are part of the speaker itself, as there is ...
Vincent Cerowski's user avatar
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I have a Pioneer XPRS 10 at work that isn't producing any high frequencies; the 10" woofer working fine, but the 1.75" tweeter is not producing any sound at all. It's a 50W, 8 ohm tweeter. I ...
Sputnik's user avatar
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This is a circuit diagram for constructing a simple doorbell circuit using transistors. Can anyone see a fault in the circuit? I've tried it on a breadboard and the circuit works with the buzzer as a ...
Monde Albevar's user avatar
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18 votes
2 answers
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Dissecting 20-year-old outdoor speakers (SpeakerCraft OE8 One), found this electronics board inside. I recognize the capacitors, but what are the big custom coils of copper wire, and what is their ...
Phrogz's user avatar
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I am a student in in college level physics and so I do not have a lot of knowledge when it comes to circuits and the different electrical components. Still, as a project, I decided to try to build an ...
Boldumus's user avatar
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For a very long time I believed that the speaker membrane just moves according to the amplitude of a electrical signal fed to it. Like, If at any instant, the current/voltage is at c% (0 <= c <= ...
Cinverse's user avatar
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I am designing an battery powered device (3.6-4.1 V regulated down to 3 V) which plays audio recordings through a speaker (8 Ω, 0.3 W). I want to drive the speaker by applying two differential inputs, ...
dvd280's user avatar
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I am trying to build a voltage follower op-amp circuit to hear a sine wave but I can't get it to work. I was using the LM386 but then found out that it has a gain of 20 by default so I can't use it. I ...
Electrolyte's user avatar
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I have recently undergone some university study which introduced square and sine wave generators, I was wondering if there's a specific speaker I could use (its inputs would be a power supply and the ...
sage_lessthan_3's user avatar
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I have a set of speakers with an additional stereo headphone output on the front. As it is now, when the headphones are plugged in, the speaker mutes, giving output to the headphones alone. I want to ...
Noah Taher's user avatar
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Edit: The output is mono on both headphones and internal speaker, despite the new connector being stereo. Original: I only have a mono audio source, and the new socket has dedicated pins for the L/R ...
lupolucio's user avatar
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Problem statement: I have 2 guitar amplifiers and I have 2 speaker cabinets that normally connect via speaker cables (1/4" connectors). I would like to create a passive device that lets me ...
Luther Baker's user avatar
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I am making an audio amplifier circuit in LTspice. This is the circuit that I've made: Notice that the input is 20 mV. The output plot is as follows: That is around the gain I want to obtain. The ...
Soumil Gupta's user avatar
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2 votes
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Goal of the circuit: Must be able to deliver 1.5 W to the speaker (8 Ω) at 1 kHz. First Problem 1.) how can we drive an 8 ohm speaker if it can only support around 1.5-2 watts? Because when we input ...
jaxillrplusone's user avatar
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I am trying to model a tweeter filter circuit from GR Research's X-CS Encore loudspeakers, more specifically get the transfer function Vo/Vi. I have included an example of how I did it for the woofer ...
Seth Petersen's user avatar
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I'm making a mic speaker circuit using max9814 and pam8403. I made the circuit like the picture, but the speaker just makes a long beep and the mic doesn't work. And, i just tried putting the ...
Jjp5045's user avatar
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I’m making a mic speaker circuit with a PAM8403 amplifier. The performance wasn't good enough; mic sensitivity wasn't good and it didn't really amplify my voice, so I thought about adding a MAX9814 to ...
Jjp5045's user avatar
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Novice looking for some help. I use a Cardo Bluetooth headset to communicate with friends and record the audio onto an action camera while out riding motorcycles. By trial and error I was able to come ...
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