I am working on a noise cancellation project and I am having problems with my design once I breadboard it and connect my 8ohm load.
I am not applying/mixing any kind of signal into the circuit, like audio that will go to headphones. I am using a microphone and preamp and then an inverting op amp with a high enough output current spec to get our desired output power.
We are using a bone conductor/audio exciter as our output, not a traditional speaker.
We are tasked with cancelling out Snow machine exhaust noise, which is about 200-600hz.
Everything simulates perfect. I'm sure I'm missing stuff to help get advice, so please ask questions if needed! Thank you.
If I remove the 8ohm load, it'll work if I dial up the resistance of the load with a pot up to at least 250ohms.