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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How to increase headphone jack volume output on a Bluetooth speaker
We have a rechargeable Bluetooth speaker with a 3.5 mm headphone jack. We often connect pillow speakers to that headphone jack to help manage tinnitus at night. The challenge is that the pillow ...
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2
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What's the relationship among speaker amp IC's supply voltage and gain?
I am new to designing audio circuit. Looking at TI TAS6424 class-D amplifier (https://www.ti.com/lit/gpn/tas6424-q1), on section 9.3.3 p.23, it mentioned volume control from -100 to +24 dB.
Given the ...
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Connecting a single 8 Ohm speaker to 4 Ohm stereo output
I have an amplifier that has stereo outputs for two 4 Ohm speakers. Now I want to connect a single 8 Ohm speaker to it. How should I go about this? Can I simply unite the two stereo cables and connect ...
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2-way speaker system tweeter phase
I'm in the middle of replacing stock speakers in the car with aftermarket speakers, and I've redone one door. The better difference in quality is very pronounced, but I wondered if I connected tweeter ...
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I want to implement a 2-active crossover circuit with LM833 and amplify it using LM386 and now the problem is I couldn't understand the circuit [closed]
I can understand up to certain level that we used a buffer, low pass filter but I can not connect with circuit and coming to components we used 120 Ω, 6.8 nF for active crossover with power supply + ...
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4
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Lowering power output from amp to speakers [closed]
I have a pair of 8 ohm speakers that are rated for max 60w and a receiver that outputs 160w and is rated for 8 ohms. I wired everything up and, as expected, even at minimum volume it was too loud. I ...
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Can I draw power from one cell while charging 5 in series?
I recently watched this video by DIY Perks and I want to build some bluetooth speakers using the electronics from a pair of Bluetooth earbuds and a class AB amp for some 10w speakers. Very similar to ...
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Help On Dual Amplifier Design
I am pretty new to electronics and so far, have been teaching myself and designing things with the help of the internet. I made and designed a class-AB amplifier circuit that drives two 8-ohm speakers ...
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Bluetooth Speaker - Power Supply
I have some 10w 8ohm speakers. I'm building a bluetooth speaker set. I've hooked up a 3.7 volt 8,000mah portable charger battery to a XL6009 buck converter ( https://www.amazon.com/dp/B07NTXSJHB?psc=1&...
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How can my crossover be improved? Efficiency is too low
I have been working on redoing the crossover for a pair of Dayton audio B652 Speakers, and have just been working on it through a breadboard for practice. I bought a bunch of cheap parts from bojack ...
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Fix for poorly designed class-D amplifier mute circuit
I recently made a PCB for a project with several class-D amplifier channels to drive small speakers for audio feedback. I included a mute switch which connected or disconnected one end of these ...
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109
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How to replace an 8 Ω, 0.5 W speaker with a 8 Ω, 1 W speaker? [closed]
I have a cuckoo clock melody circuit that is connected to the 8 Ω 0.5 W speaker and I want to replace it with the 8 Ω 1 W speaker. When I connected it the output was not that much great as the 0.5 W ...
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1
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81
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Lower volume on doorbell speaker
I have a really loud and "angry" doorbell that I would love to be able to adjust its volume.
Unfortunately it doesn't seem to have a volume control function so I decided to try and hack it.
...
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Replacing a compressor/whistle with speaker for coaching program?
We have a current setup of using a whistle in coaching situations for starting sequences. I built a small RaspPi box that, through a 12 V relay, will enable a compressor with a regular coach whistle ...
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Designing an audio output circuit with 3 note polyphony for PIC18F45K20
Our project outputs three square waves from the PIC18 and is currently designed to go into an LM324 summing amplifier and then an LM386 audio amplifier to drive an 8ohm speaker. However, we have run ...
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How to calculate watt-hours used by the @channel Slack notification sound
Imagine someone used @channel in a Slack channel with 100,000 people. How many watt-hours are used to play the Slack notification on the laptops for these 100,000 ...
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How to calculate SPL change from a sound source to a listening position?
I need to know how to calculate SPL change from a sound source to a listening position. I already know the distance between the speaker and the listening position and also the SPL at the speaker.
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Boost circuit for speaker
Years ago I build a mobile speaker with a battery inside but because of the battery dying, I decided to try to run it off USB power. The speaker is an old Creative T40 speaker and they run on 27 V so ...
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Why is it that for most Bluetooth audio devices, you can't use them while charging? [closed]
Over the past several years, I've had many small Bluetooth devices. I'm not one to buy many of these and, some how, over the years I've been gifted decent "SWAG", portable speakers and they'...
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Where do I hook up a speaker in this schematic?
I'm working on a project that needs to drive a single speaker. I've used LM2879T chips in the past to drive two speakers, so I have a couple extra I'm trying to use for this single speaker project.
...
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Designing a crossover for dual woofers and a single tweeter
I recently purchased a cheap tower speaker set which has two woofers per channel. This does not have a crossover circuit as i understand and only has a filter capacitor for the tweeter.
Can a three-...
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Are ready made crossover circuits universally compatible?
I am planning on modifiying the crossover circuit in a speaker unit. and after doing some research came across a plethora of ready made crossovers available for purchase on the internet (like the one ...
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TPA3116D2 amplifier with Sallen-Key low-pass filter on TDA2030
I have a 2 x 50 W TPA3116D2 (VHM-302) amplifier and a Pioneer TS-G1345R 35 W, 4 Ω speaker. When connecting them, there is no problem and the sound is good.
However, I wanted to build a low-pass filter ...
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Need help connecting a speaker to a video card
I have this video card which uses a 4-pin JST connector for the speaker:
PL+ PL- PR- PR+
I was using this speaker which has a 4-pin JST connector:
What I thought is:
One red wire is for the left (...
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Why do cables specify 75 Ω impedance when impedance is a two-dimensional quantity?
As I understand it, impedance has an imaginary and a real part. To be able to perform any useful calculations, one needs to know both. Cables and speakers usually only say like "8 Ω" or &...
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Will separate high-pass filters work properly with two speakers wired in parallel?
I have wall-mounted satellite speakers – inexpensive Orbs are in one room and more expensive Gallo Divas are in an adjoining room. I need to wire these speakers in parallel with high-pass filters. The ...
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310
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Raspberry Pi I2S speaker and microphones on the same connection
I am planning on buying an I2S speaker amplifier for my Raspberry Pi project. I already have the microphones for it. My question is whether the I2S interface can support speaker and mic at the same ...
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137
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Speaker impedance & wattage [closed]
I have a 15 W + 15 W amplifier per channel, it will give 15 W at 4 ohm and 10 W at 8 ohm. My speakers are 4 ohm, 10 watts. Do I add 4.7 ohm 5 W wirewound resistors in series with each speaker? Will ...
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141
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Speaker amplifier on ATX PSU is noisy when PC's 3.5mm jack is plugged in
I'm running a small class D speaker amplifier directly on my PC's ATX 12v rail (like this), so that it switches on when my PC turns on. This works great when I play music on it from my phone, but when ...
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172
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Fix the volume on a Bluetooth speaker
I recently got a cheap Bluetooth speaker. It works fine, but the indicator melodies (the beeps it makes when it turns on and off) are positively deafening. I'm slowly learning about electronics, so my ...
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Portable Xiaomi speaker passive radiator need space?
I have a Xiaomi MI portable speaker. I'm planning to replace the battery. I made space by cutting a little plastic to fit 2 18650 cylindrical cells, or a single 26650 cell.
I noticed there is empty ...
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Audio: Resistance and power
I'm choosing between two USB DACs for a pair 32 Ω headphones and need to choose the one with the greater output, i.e. with the greater loudness. One DAC has a maximum power rating of 18 mW at 16 Ω and ...
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LED works but speaker does not work in multivibration circuit
This circuit oscillates with LED (in multisim 14).
This circuit does not oscillate with speaker (labview, in real breadboard it only beeps twice and becomes silent, playback time 10 s, sample ...
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Relay controlling computer speakers causing garbled audio over time
Some years ago I connected a relay inline with the DC input of some old computer speakers so they could be powered on and off by an Arduino. This was working perfectly for a few years, but then one ...
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Speaker does not alternate and only short beep under combined astable oscillation
Both oscillation work fine separately with SPKer
taking out R6, intermittent beep can be heard. Since current thru R5 is from time to time (decided by R3/C2 time factor).
taking out R5 beep sound is ...
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Bluetooth speaker ground wire connected to 4N25
I am wondering if I can use a 4N25 optocoupler to turn on/off two small speakers. The reason for doing this is that when I turn on the unit, I won't have to hear "device connected". Side ...
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How to switch between speakers automatically based on your location to them?
I'm developing a project that will use a microcontroller to play music from three different speakers. The idea is to automatically switch which speaker is playing music based on which one I'm closest ...
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184
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Running a 70V amplifier without load
I have a 70V (Pyle PMX3500PH) connected to six speakers drawing 30W each connected through an OSD volume control (SVC 300). Since it's a transformer-based volume control, when you turn it all the way ...
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Why does the voltage drop in this circuit?
Why is the DC voltage dragged down to 0.9 V in this circuit after the speaker has beeped for a little while and has stopped? I use a DC power supply with the DC voltage set at 3 V.
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Connect 3 mm jack with 4N25 optocoupler to 8 Ω speaker
I want to take an audio signal from a smartphone's 3 mm jack plug, pass it on to a 4N25 optocoupler,, and get the sound from an 8 Ω speaker. I don't know how to connect them to each other. Can you ...
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Difference between speaker and subwoofer voice coil
What is the difference between speaker, woofer, and subwoofer voice coils?
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How to calculate simplified model of speaker impedance given a few data points
I'm given a couple of data points of the impedance of a simplified speaker model (Series R with parallel R, L, C):
Re ... DC resistance (the series R)
Fs ... resonance frequency (in Hz)
Rm ... ...
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Is there a circuit that I can build to allow this alarm device to operate a relay?
I would like to add a relay output circuit to this alarm device to allow it to operate my car horn.
The alarm device has 4 different tunes/tones. Each tone plays for about 5 seconds and the next 3 ...
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TC4056A shuts off at maximum volume (Bluetooth speaker)
I am trying to build a DIY Bluetooth speaker using a 18650 battery cell, a TC4056A battery charger board, an XY-016 that raises the voltage to 6.5 V, a 2200 μF capacitor, and a CSR8645 board. I am ...
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4
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Switch on when voltage detected
I'm adding a Google Home Mini to an antique floor radio. I don't want to toss the original components, so I'm planning on wiring the speaker to the Google Mini and want to add lights that come on in ...
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DIY electronic doorbell keeps blowing up my cheap eBay car amplifier [closed]
I'm trying to make a DIY electronic doorbell with two speakers (one is nearby but the other is 20 metres away, connected by a solid copper 14 awg cable).
It incorporates a timer to turn on the sytem ...
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3
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Using the same power supply produces no sound [closed]
AS SOME OF YOU ASKED, here is the video showing the connection and the problem: https://photos.app.goo.gl/GRsxQ783Rec6jVxo6
One clue that I got today: the problem happens EVEN if I disconnect the ...
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Switching out 8 ohm speakers for original 4 ohm speakers
I've been given an inexpensive "all-in-one" stereo receiver/cd player/turntable that outputs to two tiny built-in 4 ohm speakers. Can I cut out the 4 ohm speakers and route the output to an ...
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How to electronically sample speaker output
I have a device which, under normal conditions, is connected to a 16 Ohm 0.25W speaker via two terminal blocks. When the speaker is connected it enables the device to play a song or other tone when ...
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Ideas for charging 12v battery
I’m a 17 year old in high school, and for my class project I’m making a cooler with a car radio, and car speakers built in which is being ran off a 12 V battery. It works just fine but I have people ...
