Thanks a lotYou need a DC offset cap on the output 1uF should be enough.
Also the 330 Ohm might be too low, you could have clipping on the output.
Most important, you need a reference that is 3V to pin 3. This is easy to do, take two 100k resistors in series to form a voltage divider. Connect the middle to pin 3 and one outside leg to 6V and the other to GND.
Thanks a lot6)
The Non-Inverting-Input must be "Grounded" a Supply-Point
that is 1/2 of the Supply-Voltage.
I got that part wrong.Thanks a lot
But it didn't work
Thanks a lot
I can't understand this part
Thanks a lot I will try ithi RR,
Look at this marked up version.
E
The 1uF must be added to the end of the 330R
Update:
If you want to improve the low frequency response change the 1uF on the 330R to 10uF.
View attachment 249175
I think low pass filter will reduce the high frequency of this self feedback.The lousy old LM358 is too noisy (hiss) to be a mic preamp and it produces crossover distortion. Also it has a poor response to high audio frequencies.
Use an audio opamp instead.
What will prevent the microphone from hearing the speakers and producing acoustical feedback howling?
by Jeff Child
by Jake Hertz
by Robert Keim
by Jake Hertz