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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potentiometer volume control of backup beeper
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 ...
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Having trouble with a 555 Astable timer outputting into NPN transistor switch that controls 741 Op-Amp
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 ...
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what is this part/component in this circuit schematic?
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 ...
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How do you diagnose a fault with a tweeter?
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 ...
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Simple doorbell circuit using transistors
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 ...
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What is the purpose of these fat copper coils wrapped around … something?
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 ...
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Improving the waveshape and amplitude of a saw-tooth generator
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 ...
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Graph plot of sinusoidal current/voltage vs displacement of speaker membrane from its resting position
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 <= ...
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Driving speaker with differential driver
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, ...
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Building a unity-gain op amp with speaker?
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 ...
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Using a square and/or sine wave generator through a speaker [closed]
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 ...
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Modify headphone jack to not mute speakers when plugged in (Yamaha HS4)
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 ...
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7 contacts 3.5mm jack socket: automatic speaker headphones switchover
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 ...
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DIY guitar amp cabinet selector switch
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 ...
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Why is the output voltage across the load dropping a lot in this audio amplifier circuit?
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 ...
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