You are all very correct in the unreliability of these boards.
With mine, i found the main cause of them spontaneously exploding was any voltage sag on the +/- input, which causes the output of the awful onboard linear regulator output to fluctuate, messing with the irs2092 chip.
By using very stiff power supplies i managed to get around this, however the other issue is that the inputs are just incredibly sensitive, and i had many explode just by having their inputs close to my dc-dc converters or smps supplies.
My solution to this is to simply not offer any inputs except for bluetooth, with a whole lot of input protection.
The irs2092s amps i have built before using my dc-dc converters are housed within the subwoofer enclosures out of reach.
For £12 pushing 400w, they are very good value in the right conditions. However i have overall found that the cost of building or buying mains smps for them is too much, so i will likely stick to DC-DC converters to supply them, like a car amp.
With mine, i found the main cause of them spontaneously exploding was any voltage sag on the +/- input, which causes the output of the awful onboard linear regulator output to fluctuate, messing with the irs2092 chip.
By using very stiff power supplies i managed to get around this, however the other issue is that the inputs are just incredibly sensitive, and i had many explode just by having their inputs close to my dc-dc converters or smps supplies.
My solution to this is to simply not offer any inputs except for bluetooth, with a whole lot of input protection.
The irs2092s amps i have built before using my dc-dc converters are housed within the subwoofer enclosures out of reach.
For £12 pushing 400w, they are very good value in the right conditions. However i have overall found that the cost of building or buying mains smps for them is too much, so i will likely stick to DC-DC converters to supply them, like a car amp.
Yes, i have ended up using a vigortronix smps module that supplies the bluetooth module at startup. I then have an RC timer which turns on a relay on the ac input side of the smps, with a large ntc to keep the inrush current through the relay low.
I would have a go at the muting circuit, but the bluetooth module plays a chinese noise at some seconds after startup, which is annoying.
Exciting stuff. Instead of a borderline girlfriend a borderline amplifier with suicidal tendencies.
If you send me a PM I will send you a muting PCB for shipping costs. Adjustable in delayed muting so no chinese messages.
I see a loud voice yelling BANZAI!!! at 400W output power and than a flash and a loud bang😂
If you send me a PM I will send you a muting PCB for shipping costs. Adjustable in delayed muting so no chinese messages.
I see a loud voice yelling BANZAI!!! at 400W output power and than a flash and a loud bang😂
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