Post by dobrykamil on Nov 23, 2018 12:45:53 GMT -5
Hello
I've got above model and it works in general, but instantly after powering on, subwoofer produces very annoying crackle and popping sound. I believe this is another, common issue with this model. Most information on the internet is regarding hum, buzzing sound etc. caused by dodgy +15V, -15V rail caps.
I've managed to repair different MA subwoofer with exact symptoms in the past - BXW10. Problem is, amplifier for RSW12 comes with two IR2110 mosfet drivers working in full bridge circuit.Long story short, I've replaced both bootstrap caps (that was the case with BXW10) but it didn't help at all. I don't have SM yet, but I've emailed MA support team, so hopefully they'll come back to me soon. I believe problem is caused by one of the caps, because popping sound goes away (not entirely, becomes less frequent) once the unit warms up a bit.
Has anyone came across with this problem before?
Cheers
I've got above model and it works in general, but instantly after powering on, subwoofer produces very annoying crackle and popping sound. I believe this is another, common issue with this model. Most information on the internet is regarding hum, buzzing sound etc. caused by dodgy +15V, -15V rail caps.
I've managed to repair different MA subwoofer with exact symptoms in the past - BXW10. Problem is, amplifier for RSW12 comes with two IR2110 mosfet drivers working in full bridge circuit.Long story short, I've replaced both bootstrap caps (that was the case with BXW10) but it didn't help at all. I don't have SM yet, but I've emailed MA support team, so hopefully they'll come back to me soon. I believe problem is caused by one of the caps, because popping sound goes away (not entirely, becomes less frequent) once the unit warms up a bit.
Has anyone came across with this problem before?
Cheers
