Fast GB: LM4702 high power amp test board ;)

[tino96]

Originally posted by veteran
This was a test board. Capacitors protect speakers but amplifier sound much better without them Supply voltage is limited to maximum OPA552 voltage range or (if regulators will be mounted) to about (+)(-)40VDC.

No, not yet. I'm waiting for my boards to start some real tests.

GB is closed. Soon I will put some pictures of my amplifier.

Hi veteran, I like drakula project, minal design, and (I think) good sound;
but I have found more and more project with small changes..
I've visited you site @ http://www.unisonus.com/projects/dracula.htm
but there are only some photos of your (good) work.
Do you have the schematic and the pcb that you've used?
and more... how set the bias current?.
Another... OPA445 have (+)(-)45VDC of voltage range in DIP8 package... can I use this opamp?
many tnx in advance