Ir2153 amplifier modified for higher drive current

This amp I make , sound like a scooter when I power it on . Then when I plug it off the noise decay with increasing frequency and then the sound vanish.
I have a gate resistor of 10 ohms . With irfp150 i.
I use 50.0.50 supply with 12v external power supply .
A totenpole arrangement of bd139 and 140 is present inbetween the ir2153 and irfp150