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.

Filter by
Sorted by
Tagged with
1
vote
0answers
20 views

Lower volume of subwoofer

I have a 5.1 dvd player. The volume of subwoofer is high even after setting low in remote. Is it possible to lower volume by adding resistor between dvd player and woofer output line. If so how much ...
0
votes
0answers
27 views

Modification of Speaker-System to operate at 12VDC (Logitech Z903)

The aim of this modification is that the speaker system (Logitech Z903) is working with 12V input (don’t worry about the Amps). The power supply of my Loudspeakers has an Input of 220-250VAC @50Hz ...
0
votes
1answer
32 views

PSpice library for a speaker?

I am trying to simulate a current driver using TIP31 transistor for a speaker with known resistor and wattage. Can anyone please help me find a PSpice library for speakers? If there is not a library, ...
1
vote
1answer
52 views

How to check the power output of home amplifier speaker terminals?

I recently bought a Sony STR-DH800 from eBay and to cut a long story short I'm getting different volume levels using the same speakers across the various speaker terminals. I have a multimeter and I ...
0
votes
0answers
38 views

Buzzer Voltage and Current waveforms

I have a buzzer circuit. Waveform : My questions : I have marked the points in the circuit where I am measuring the voltage and the current. PWM pulse is given to the base of the transistor. I ...
0
votes
0answers
27 views

Intercom System

I am trying to make a prototype to test a circuit. It is about am intercom circuit. I have an intercom device with 2 wires, and it supports multiple stations and everybody can talk and hear at the ...
1
vote
0answers
22 views

Troubleshooting adding a bluetooth receiver to my intercom system

I have a Nutone IMA 4406 intercom system with several intercoms throughout the house. I am interested in wiring a Bluetooth receiver to its Auxillary line in connection so that I can stream music ...
1
vote
3answers
74 views

Connecting 2 1W speakers

I am trying to connect together 2 1W speakers and mount them inside some ear defenders. I am a complete novice and am following an instructable tutorial. The tutorial is a bit light on the basics and ...
-1
votes
1answer
33 views

Subwoofer high level connection and Class T amplifier [closed]

This question has a connection to a previous one of mine: I have a BK Electronics Gemini I subwoofer that will soon be spare. It has two inputs called: low level and high level. The low level ...
1
vote
2answers
76 views

Speaker impedance and voltage

There is a device which has output impedance 150ohms. If my headphone has either lower(30ohms) or higher (400ohms) impedance can I use it or sound will be too low/high and it will be unsable? Also, ...
-1
votes
1answer
58 views

Multiple inputs for 5.1 audio system [closed]

this is my first post here and I hope I chose the right SE site. I have a Logitech X-530 5.1 audio system, which is very old and supports input using 3 3.5mm jacks for Front, Rear and Sub (I suppose, ...
8
votes
5answers
2k views

Amplifier speaker outputs: is the black always the chassis?

Any amplifier or A/V receiver that I have seen has a black and a red terminal for each speaker. From 2 pairs for a simple stereo system up to 7 or more for an A/V receiver. It is quite a while ...
1
vote
1answer
86 views

What might be inside my speaker switch?

I have a speaker switch which has been in continuous use since some time in the 1980s. It a QED SSU4. To my surprise, there are plenty of pictures on the net and even some for sale. Even more ...
0
votes
0answers
27 views

Do active PZT audio buzzers (with built-in driver) create dangerous spikes on power supply?

I am planning to add a active piezo element audio buzzer with built-in driver (BESTAR BPT-14X or LOUDITY LD-BZEL-PB04-1408 ) to my recent quite complex MCU project. These buzzers come with built in ...
0
votes
2answers
32 views

How can I identify specifications for this possible passive speaker with subwoofer? And what are each wirings on that cable for?

From Reddit https://www.reddit.com/r/techsupport/comments/g5aynj/can_someone_help_me_identify_the_specifications/ I tried to get specifications of a speaker. This one here is specifically for ASUS ROG ...
1
vote
1answer
58 views

Can 3Ω speakers match 4~16Ω amplifier? [closed]

I have a set of Samsung home theatre system. The Samsung DVD player is no longer working. I would like to get a new amplifier and reuse the 5 existing Samsung speakers. But the existing speakers are ...
1
vote
3answers
81 views

The right way to have amplified speakers that mute when you plug in earphones

I am designing a handheld device that has an I2S DAC, small speakers, amplifiers (~2 watts), and an earphone jack. I'd love advice on the best way to hook these together. My goal is high quality audio ...
1
vote
1answer
74 views

Driving a 8Ω speaker from a 3.3v DAC

I'm looking for some advice on driving an 8Ω 2W speaker near full power from a 3.3v DAC. I've put together a current amplifier using a rail-to-rail op amp and two BJTs, but it's not supplying as much ...
1
vote
1answer
38 views

How do I look for a replacement speaker? [closed]

I have a Kinera Idun. It's an IEM with multiple drivers (2 balanced armatures for highs, 1 dynamic driver for lows). I was listening to some Lo-fi music when right side bass simply disappeared. I can'...
0
votes
0answers
62 views

Horn power amplifier design

I need to design experimental prototype of power amplifier (PA) for a horn speaker. The PA should support 100W RMS @ 8ohm. Power supply voltage is 12V. My first (and probably most simple) idea was to ...
1
vote
1answer
49 views

Mr. Smeow's loud, annoying robot dog [closed]

I bought my cat a robot dog for Xmas. He loves it! I currently have taken it apart to clean some accumulated hair out from around some of the rotating parts. It plays music that is kind of loud and ...
0
votes
2answers
40 views

removing the pop noise when amp is switched with passive components only

I've recently bought this little 2*3W USB-powered amp and it is working pretty well with my old Panasonic boombox speakers (rated 2.7 ohms, 15w peak input). However when switching off the USB power i ...
1
vote
1answer
55 views

What brand is this buzzer?

I have been searching for this buzzer for weeks. Does anyone know what brand it is? It is a surface mount buzzer. I need to know the brand. Approximate dimensions: 8.7 mm x 8.7 mm x 3.25 mm
1
vote
0answers
42 views

Audio Loopback Dongle Sanity Check

The same circuit as in Explain “Audio Loopback Dongle"; I wanted to know how it worked. Anything I couldn't figure out I found out via CircuitLab's time analysis: simulate this circuit – ...
2
votes
1answer
141 views

Explain “Audio Loopback Dongle”

This AOSP/Develop/Audio page describes the following audio loopback dongle. Can someone explain it? To ensure that the output signal will not overload the microphone input, we cut it down by about ...
0
votes
0answers
13 views

Interfacing RN52 with SIM800C

I am interfacing an RN52 with SIM800C to make calls to and from the bluetooth device and so i have connected the speaker line of SIM800C to the mic of RN52 and the mic of SIM800C to the speaker of ...
0
votes
0answers
56 views

Reducing Speaker Volume

I have Hi-Fi speakers (1x tweeter/1x mid/2x woofers) that can be made bi-wired by removing the shorting bars on the binding posts. It has 3 crossovers. The speaker is 8 ohms and my amp 80 watts. ...
0
votes
1answer
44 views

Designing a bluetooth audio unit for speaker

(Cross posting from Sound design stack exchange since it was declared off topic there) I have a sony speaker from an old Home Theatre System that is broken now leaving the standalone speakers in a ...
0
votes
1answer
65 views

How much power is needed to run these speakers?

I have couple of loudspeakers. Each is rated for: RMS Power 60 watts Power 75 watts vc Imp 16 Ohms I am going to build an audio amp for those but not sure how much power is needed. I'm concerned ...
5
votes
2answers
885 views

Does higher impedance speakers generate clearer voice?

I have a PAM8403 based amplifier module and going to build a small portable speaker, mostly to listen to lectures and audio books. The module looks like this: First I attached two 4 ohms 3 watts ...
1
vote
1answer
60 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 ...
0
votes
0answers
42 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 ...
0
votes
0answers
22 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 ...
0
votes
0answers
83 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: ...
0
votes
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 ...
0
votes
0answers
140 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), ...
0
votes
3answers
66 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 ....
1
vote
0answers
49 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 ...
0
votes
1answer
60 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 ...
14
votes
2answers
2k 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.
-1
votes
2answers
289 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 ...
2
votes
1answer
88 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 ...
3
votes
1answer
78 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 ...
0
votes
2answers
106 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
votes
1answer
91 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, ...
1
vote
0answers
69 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
votes
1answer
59 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 ...
1
vote
1answer
31 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 ...
0
votes
1answer
105 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 ...
1
vote
0answers
153 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 ...

1
2 3 4 5
10