My Version of Mauro Penasa's LM3886
 

I have redrawed and routed Maura's version of LM3886 chipamp. It's my first project in Protel.
Could someone check is there some errors like bad routed ground etc.

Stanley, was there supposed to be an attachment here to review?

I have some problems, how to download picture to forum?

Here you go. And what a nice picture it is.;)

Regards,
Milan

and schematics:

I have rerouted a bit and:
- Do I need to use star routed groud?
- Does my current ground looks ok?

incomplete schematic and pcb.... the schematic is a 2 page jobby, you are missing DC protection components and relay.

I have another DC protection circuit on separate PCB and it's already done and I no need to make Mauro's DC protection.
What about amplifier PCB does there everything routed right?

Hi,
is the 3886 allowed to run at low gain?

You seem to have 47k (R7) into 22k (R14) giving -7db.

Does R10+C7 compensate?

Well, I have redrawed Mauro's schematics and a lot of peoples use this amplifier and I think that this schematic must be correct.
I have compared every value with Mauro's version and everything the same.