JAQForum Ver 24.01
Log In or Join  
Active Topics
Local Time 21:09 13 Jul 2024 Privacy Policy
Jump to

Notice. New forum software under development. It's going to miss a few functions and look a bit ugly for a while, but I'm working on it full time now as the old forum was too unstable. Couple days, all good. If you notice any issues, please contact me.

Forum Index : Microcontroller and PC projects : PicoMite: driving a small speaker

     Page 14 of 14    
Author Message

Joined: 05/03/2018
Location: Netherlands
Posts: 3761
Posted: 03:10pm 03 Jun 2023
Copy link to clipboard 
Print this post

The amplifier is a differential amplifier. So it amplifies the difference between A and A-.
In case of mono, you hear theretically nothing. Small differences between A and A- are amplfied. In case you have mono with counterfase signals, this results in a ver good loud audio.
When A and A- are stereo, your loudspeaker will give the difference betwwe L and R.



Joined: 16/09/2019
Location: United Kingdom
Posts: 3907
Posted: 03:39pm 03 Jun 2023
Copy link to clipboard 
Print this post

Thanks Volhout, this is what I thought, but doesn't match the observation that when fed a stereo signal with the same signal on L/AIN+ and R/AIN- I am getting a reasonable output. I guess I need to check my wiring.

Best wishes,

Game*Mite, CMM2 Welcome Tape, Creaky old text adventures
     Page 14 of 14    
Print this page

To reply to this topic, you need to log in.

© JAQ Software 2024