hello everyone... sorry to bump this thread but i am having the same exact problems with an audio amplifier i am trying to build for my electronics 2 class. i will try adding the supply filter to my design as i had not thought of that yet.

but did anyone ever resolve this issue?

 

Greetings PMG,

I have moved your thread so that it will get the attention needed. The thread you tacked it onto was a dormant and stale one.

It would be helpful if you could post a copy of the schematic of your circuit and describe where you are encountering a snag.

hgmjr

 

One thing I learned over twenty years ago:

National Semiconductor application notes are just a suggestion of how to a circuit might work!