LM3886 Schematics + PCB

Very small PCB based on Yorkville Amps.
 

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This circuit diagram Yorkville use in 50w guitar and keyboard amp, active stidio monitor, active PA speakers, small powered mixer... Circuit is simple R5, C5 and D1 make turn on/off delay on mute pin. I made over 80 PCBs, and use PC procesor heatsink for cooling. Most of them work in 2-6 channel amplifier for caffe-bars. Work great over 2 years in all condition even sumer heat. I you are beginer in DIY, start with this amp.
 
Would you also need a second diode for output to negative voltage rail?


// by the way, I like the mosfet board you detailed in another thread.
Negativ inverse overvoltage is no critical becouse LM3886 have unsimetry internal circuit.
I like mosfet board too, it is small, compact and easy to montage on heatsink. I hope is usufull for someone. It was workinhorse for me longtime before replaced with new design.