Budget IRS2092 500W amplifier subwoofer project powered by SMPS 500W -+58V

Please read the comments before. DIY IRS2092S 500W Mono Channel Digital Amplifier Class D HIFI Power Amp Board With FAN with SMPS 500W dual 58V power supply, test and results. The Monacor subwoofer cabinet has been stripped by any filters and transformers, it is just a simple loudspeaker cabinet now. 00:00 description 00:30 SMPS power supply +-58V 01:00 500W power amplifier 01:20 about low cut filter 03:35 How to connect the SMPS and the amplifier 04:37 power up ! 05:00 resistor burn out! 06:00 voltage control 06:30 let&test another board! 07:00 same resistor burned 08:00 dumping the input 22nF 08:40 more tests 10:00 440Hz test 10:45 auto oscillating problem 13:00 final remarks