Opamp Audio Mixer Circuit | Audio-Digital.net

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Op Amp Summing Amplifier: Virtual Earth Mixer ...

https://www.electronics-notes.com/articles/analogue_circuits/operational-amplifier-op-amp/virtual-earth-mixer-summing-amplifier.php

During the electronic circuit design for an audio mixer summing amplifier using an op amp circuit, thought has to be put into the way in which the gain of each channel is controlled. The obvious place to place a potentiometer is on the input as shown.

Build an Audio Mixer - Projects - All About Circuits

https://www.allaboutcircuits.com/projects/build-an-audio-mixer/

Let's start designing our circuit for the mixer. For your party, you want to have 4 singers and 1 song mixed together. This is a total of 5 channels, so you will need 1 op-amp and 5 potentiometers. An op-amp is not well suited to directly driving a speaker, so a power amp is normally included to drive the speaker.

How to build an audio mixer - Electronic Circuits

https://www.circuitlib.com/index.php/tutorials/product/39-how-to-build-an-audio-mixer

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Opamp audio mixer circuit. | diyAudio

https://www.diyaudio.com/community/threads/opamp-audio-mixer-circuit.341570/

This is more a passive mixer circuit, with a buffer on the end, there are better, fully active, mixer circuits using a current summing junction and buffers on each channel (increasing the component count though). These better circuits can be designed for low noise. Usually lower noise means more opamps, because you need to keep impedances down.

Audio Circuit Mixer: 5 Ways of Building an Audio Mixer

https://www.wellpcb.com/audio-circuit-mixer.html

Examples of audio maker circuits are as follows; 4 channel Audio Mixer using a Single Op-Amp For the first audio maker circuit, we’ll incorporate an IC LM3900. LM3900 is in a 14-pin dual inline package. Then, in the list of LM series, it is a Quadruple Norton Op-Amp IC. Additionally, its supply voltage varies widely from 4.5V to 32V.

Two Channel Audio Signal Mixer Using LM358-BA4560 Op-Amp ...

https://www.twovolt.com/2017/02/02/two-channel-audio-signal-mixer-using-lm358-op-amp/

Two Channel Audio Signal Mixer Using LM358-BA4560 Op-Amp Supply 5V DC ( LM358) Supply 12V DC (BA4560) Standard Audio Signal Input On Board Preset For Gain Set Header Connector for Inputs, Output & DC Supply

Audio mixer using op amp | All About Circuits

https://forum.allaboutcircuits.com/threads/audio-mixer-using-op-amp.75628/

The circuit does the mixing work but the output is too low.....i had to remove my headphones and plug my speakers. My speakers at their full volume atleast showed the circuit works but still output was too low..... Plz verify whether this circuit is ok to use as audio mixer...ie its resistance values etc!!!! i have used ne5532 low noise op amp!!!

operational amplifier - Non-inverting Op-Amp Audio Mixer ...

https://electronics.stackexchange.com/questions/472751/non-inverting-op-amp-audio-mixer

If you look closely at the two circuits, you will find they are the same 4-input resistor summer + op-amp. The only difference is in the input voltage of the fourth input - in the non-inverting circuit 0 V (ground) is applied to R1 (the ground is the "source") while in the inverting circuit VOUT is applied to R5 (the op-amp output is the source).

4 Simple Audio Mixer Circuits diagram using FET and ICs ...

https://www.eleccircuit.com/simple-audio-mixer-circuit-with-fet-2n3819/