Had these speakers for just over a year and they have been working fine until one day after the guarantee period they started to emit a buzzing sound on both channels , i instantly assumed that the capacitors were at fault. I opened up the device only to find one of the output capacitors connected the wrong way round. The Positive leg was connected by a fly wire aswell as to the pcb to the heatsink and the negative leg was on the positive. I tested these points with my multimeter to confirm my finding and it was indeed backwards , but i dont see how it should of worked in the first place. The voltage raised to about 41.2V peaked since it was a 50v 3300uf capacitor.. ive never had no trouble until the guarantee period ended.. i dont want to end up replacing the capacitor only to find it blows up. I dont get it its well strange, ive never known anything like this .
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